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050 Meteorology

(2H30/90 Questions)

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Question n° 1 - ID 1566 An aircraft is flying from south to north, above the polar front jet stream, at FL400 in the southern hemisphere. What change, if any, in temperature will be experienced ? (1) It increases. (2) It decreases and then increases. (3) It stays the same. (4) It decreases. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 2 - ID 0 On the approach, the surface temperature is given as -5*C. The freezing level is at 3000 FT/AGL. At 4000 FT/AGL, there is a solid cloud layer from which rain is falling. According to the weather briefing, the clouds are due to an inversion caused by warm air sliding up and over an inclined front. Would you expect icing? (1) Yes, between ground level and 3000 FT/AGL. (2) Yes, but only between 3000 and 4000 FT/AGL. (3) No, absolutely no icing will occur. (4) No, flights clear of cloud experience no icing. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 3 - ID 1774 A microburst phenomenon can arise in the (1) downdraught of a cumulonimbus at the mature stage. (2) updraught of a cumulonimbus at the growth stage. (3) downdraught of a cumulonimbus at the formation stage. (4) updraught of a cumulonimbus at the mature stage. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 4 - ID 12836 The air mass in the warm sector of a polar front is: (1) arctic air. (2) equatorial air. (3) tropical air. (4) polar air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 5 - ID 13599 What conditions are necessary for vertical visibility to be reported? (1) Whenever the lowest ceiling is below 1500 FT above ground. (2) Whenever the lowest cloud base is below 1500 FT above ground. (3) Whenever the sky is obscured by fog or heavy precipitation and the height of the cloud base cannot be measured. (4) It is always reported. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 6 - ID 14264 Solid precipitation which is transparent or translucent and has a diameter of 5mm or less formed by the freezing of raindrops or refreezing of melted snow, and usually bounces off hard surfaces, is a description of; (1) ice pellets; (2) snow grains; (3) hail; (4) small hail; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 7 - ID 2179 What prevents air from flowing directly from high-pressure areas to low-pressure areas ?

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(1) The pressure gradient force (2) Surface friction (3) Coriolis force (4) Katabatic force ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 8 - ID 2607 At which airport is the following weather development taking place? TAF 231200Z 231322 24014G32KT4000 +TSRASCT005 BKN015 BKN020CB BECMG 1416 29012KT 9999 BKN030TCU SCT100 TEMPO 1619 8000 SHRA BKN025TCU BECMG 1922 27012KT 9999 SCT030 OVC220 = (1) EKCH (2) ESSA (3) LSZH (4) EINN Please select A, B, C or D from above.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 9 - ID 10871 Clouds in patches, sheets or grey or whitish layers made up of elements resembling large pebbles or rollers, together or not, and always clear of the ground are: (1) Nimbostratus. (2) Stratus. (3) Stratocumulus. (4) Alto stratus. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 10 - ID 4190 Which of the following conditions gives the highest value of the QNH? (1) QFE = 1003 hPa, elevation = 1200 FT (366m)

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(2) QFE = 995 hPa, elevation = 1600 FT (488m) (3) QFE = 995 hPa, elevation = 1200 FT (366m) (4) QFE = 1000 hPa, elevation = 1200 FT (366m) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 11 - ID 12801 Where is the projection of the polar front jet stream on the surface most likely to be found in relation to the cold and warm fronts of a depression? (1) Up to 200 NM either side of the cold front and up to 200 NM either side of the warm front (2) 300 to 450 NM behind the cold front and 50 to 200 NM ahead of the warm front (3) Up to 100 NM either side of the cold front and up to 200 NM either side of the warm front (4) 50 to 200 NM behind the cold front and 300 to 450 NM ahead of the warm front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 12 - ID 10850 A wind sounding in the region of a polar front jet stream gives the following windprofile (Northern hemisphere).; 900hPa 220/20kt ; 800hPa 220/25kt ; 700hPa 230/35kt ; 500hPa 260/60kt ; 400hPa 280/85kt; 300hPa 300/1 OOkt; 250hPa 310/120kt; 200hPa 310/80kt; Which system is the jet stream associated with? (1) With a ITCZ. (2) With a cold front. (3) With an easterly wave. (4) With a warm front. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 13 - ID 1219 Which of the following clouds are classified as medium level clouds in temperate regions ? (1) CS, ST. (2) SC.NS (3) CI.CC. (4) AS, AC. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 14 - ID 12842 Pressure altitude is obtained by: (1) correcting the altimeter for temperature deviation from ISA. (2) setting the altimeter to OFF pressure. (3) setting the altimeter to standard sea level pressure. (4) setting the altimeter to a station pressure which has been corrected to sea level. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 15 - ID 64 What is the effect of a strong low level inversion ? (1) It promotes vertical wind shear. (2) It promotes extensive vertical movement of air. (3) It prevents vertical wind shear. (4) It results in good visual conditions near the surface. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 16 - ID 4103 Vertical wind shear is (1) a change of horizontal wind direction and/or speed with horizontal distance (2) a horizontal shear of vertical wind (3) a change of vertical wind speed with horizontal distance (4) a change of horizontal wind direction and/or speed with height ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 17 - ID 2549 Which of the following cloud types is a medium level cloud ?

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(1) cs (2) AS (3) ST (4) sc ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 18 - ID 4253 What are the characteristics of the Bora ? (1) It is a very cold wind that blows mainly in winter from a north-westerly direction in the Mediterranean (2) It is a dry and hot southerly wind experienced in the Sahara desert, that often carries dust. (3) It is a warm and moist, south-westerly wind experienced in the eastern Mediterranean, that usually carries precipitation. (4) It is a cold and very strong wind that blows mainly in winter from a tableland downwards to the Adriatic ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 19 - ID 10874 Considering the North Atlantic at latitude 5CTN during winter, the mean height of the tropopause is approximately (1) 54 000 FT (2) 43 000 FT (3) 31 000 FT (4) 23 000 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 20 - ID 1556 You intend to overfly a mountain range. The recommended minimum flight altitude is, according to the aviation chart, 15000 FT/AMSL. The air mass that you will fly through is on average 15°C war mer than the standard atmosphere. The altimeter is set to ONH (1023 hPa). At what altimeter reading will you effectively be at the recommended minimum flight altitude? (1) 15900 FT. (2) 14100 FT. (3) 14370 FT. (4) 13830 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 21 - ID 10925 The passage of a warm front can be associated with areas of fog. The types of fog just in advance and just after the passage are respectively (1) advection fog and radiation fog (2) arctic smoke and frontal fog (3) frontal fog and advection fog (4) advection fog and steaming fog ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 22 - ID 1548 You plan a flight over a mountain range at a true altitude of 15000 FT/AMSL. The air is on an average 15°C colder than ISA, the pressure at sea level is 1003 hPa. What approximate indication should the altimeter (setting 1013.2 hPa) read? (1) 15690 FT. (2) 14370 FT. (3) 16230 FT. (4) 13830 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 23 - ID 1276 In which of the following bands of latitude is the intertropical convergence zone most likely to be encountered in January, between Dakar and Rio de Janeiro? (1) 0°-7°N. (2) 8°-12°S. (3) 3°-8°S. (4) 7°-12°N. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 24 - ID 4055

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When otherwise calm and clear conditions exist a station on the shore of a large body of water will experience wind (1) from the water in daytime and from the land at night (2) continually from land to water (3) continually from water to the land (4) from the land in daytime and from the water at night ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 25 - ID 4197 Flight visibility from the cockpit during approach in a tropical downpour can decrease to minimal (1) about 500 metres (2) about 200 metres (3) about 1000 metres (4) tens of metres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 26 - ID 0 How long does a typical microburst last? (1) 1 to 2 hours. (2) 1 to 5 minutes. (3) Less than 1 minute. (4) About 30 minutes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 27 - ID 2517 An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013,2 hPa. Which of these statements is correct? (1) The true altitude will be higher at A than at B (2) The true altitude will be higher at B than at A (3) Wind speed at A and at B is the same (4) Wind speed at A is higher than at B

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 28 - ID 0 Which of the following phenomena should be described as precipitation at the time they are observed? (1) FZFG (2) HZ (3) SN (4) BCFG ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 29 - ID 12853 What is the most probable temperature at the tropical tropopause? (1) -35°C (2) -55°C (3) -25°C (4) -75°C ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 30 - ID 1202 What does dewpoint mean? (1) The temperature at which ice melts. (2) The temperature at which the relative humidity and saturation vapour pressure are the same. (3) The temperature to which a mass of air must be cooled in order to reach saturation. (4) The freezing level (danger of icing). ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 31 - ID 2130 If a saturated air mass descends down a slope its temperature increases at (1) a lower rate than in dry air, as condensation gives out heat. (2) the same rate as if the air mass were dry. (3) a lower rate than in dry air, as evaporation absorbs heat. (4) a higher rate than in dry air, as it gives up latent evaporation heat. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 32 - ID 12843 Over the Indian Ocean and the Bay of Bengal tropical cyclones are (1) frequently observed, in the average 15 per year over the Indian Ocean, but never over the Bay of Bengal. (2) never observed. (3) occasionally observed, in the average 12 per year. (4) rare, in the average one every two years. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 33 - ID 230 During which stage of thunderstorm development are rotor winds characterized by roll clouds most likely to occur ? (1) Cumulus stage and mature stage. (2) Cumulus stage. (3) mature stage. (4) Dissipating stage. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 34 - ID 13690 8/8 stratus base 200 FT/AGL is observed at sunrise at an aerodrome in the north of France; the QNH is 1028 hPa and there is a variable wind of 3 kt. What change in these clouds is likely at 1200 UTC in summer and winter? (1) Winter: OVC, base 500 FT/AGL; summer: SCT, base 3000 FT/AGL. (2) Winter: SCT, base 3000 FT/AGL; summer: OVC, base 500 FT/AGL. (3) Winter: BKN, base 2500 FT/AGL; summer: BKN, base 3500 FT/AGL. (4) Winter: clear sky; summer: BKN CB, base 1500 FT/AGL. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 35 - ID 12806 When is the RVR reported at most airports? (1) When the RVR decreases below 2500 m. (2) When the RVR decreases below 2000 m. (3) When the visibility decreases below 1500 m. (4) When the visibility decreases below 2000 m. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 36 - ID 10931 The term PROB as used in a TAF message, indicates the probability in percentage, of phenomena described during a specific period. The numerical values immediately following the term PROB, are: (1) 25 or 35 (2) 20 or 30 (3) 30 or 40 (4) 35 or 50 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 37 - ID 13829 In which situation is advection fog most likely to form? (1) An air mass moving inland from the coast in winter. (2) Warm moist air settling over a warmer surface under no-wind conditions. (3) A warm moist air mass on the windward side of the mountains. (4) A light breeze blowing colder air out to sea. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 38 - ID 4134 The wind direction in a METAR is measured relative to (1) grid north (2) the O-meridian (3) true north (4) magnetic north ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 39 - ID 2128 According to ISA the temperature in the lower part of the stratosphere (1) increases at first and decreases afterward (2) is almost constant (3) decreases with altitude (4) increases with altitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 40 - ID 1688 The temperature at FL 330 overhead London will be (1) -39°C (2) -57°C (3) -33°C (4) -45°C

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 41 - ID 10897 In relation to the total weight of the atmosphere, the weight of the atmosphere between mean sea level and a height of 5500 m is (1) 99% (2) 1% (3) 50% (4) 25% ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 42 - ID 1089 The most likely reason for radiation fog to dissipate or become low stratus is: (1) an increasingly stable atmosphere. (2) a low level temperature inversion. (3) increasing surface wind speed. (4) surface cooling. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 43 - ID 12732 Lenticular clouds in mountainous areas indicate: (1) light variable winds. (2) an inversion. (3) unstable air. (4) turbulence. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 44 - ID 1265 During a cross-country flight at FL 50, you observe the following sequence of clouds: Nimbostratus, Altostratus, Cirrostratus, Cirrus. Which of the following are you most likely to encounter ? (1) Increasing temperatures. (2) A strong downdraught. (3) Strong, gusty winds. (4) Decreasing temperatures. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 45 - ID 13694 In which of the following situations is the probability for severe thunderstorms the highest? (1) Advection of warm air over a cold land surface. (2) Advection of continental cold air over a warm land surface. (3) Advection of maritime warm air over a cold sea surface. (4) Advection of maritime cold air over a warm sea surface. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 46 - ID 2507 Which FL corresponds with the 300 hPa pressure level ? (1) FL300 (2) FL390 (3) FL50 (4) FL100 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 47 - ID 10937 What name is given to the low level wind system between the subtropical high pressure belt and the equatorial trough of low pressure (ITCZ) ? (1) Westerly winds. (2) Trade winds. (3) Monsoon. (4) Doldrums. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 48 - ID 13650 In the northern hemisphere with an anticyclonic pressure system the geostrophic wind at 2000 FT over the sea is 060/15. At the same position the surface wind is most likely to be (1) 060/10 (2) 070/20 (3) 050/10 (4) 060/20 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 49 - ID 3484 Which of the following cloud types are most likely to produce light to moderate icing when they are not subject to orographic lifting and consist of supercooled cloud droplets? (1) Altostratus and cirrocumulus (2) Stratus and cumulonimbus (3) Altocumulus and altostratus. (4) Stratocumulus and cirrostratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 50 - ID 1561 An aircraft is flying through the polar front jet stream from south to north, beneath the core. How would the OAT change, in the northern hemisphere, during this portion of the flight? (1) It remains constant. (2) It increases. (3) It first increases, then decreases. (4) It decreases. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 51 - ID 2245 The QNH at an airfield in California located 69 metres below sea level is 1018 hPa. The air temperature is 1CTC higher than a standard atmosphere. What is the QFF? (1) 1018 hPa (2) Less than 1018 hPa (3) It is not possible to give a definitive answer (4) More than 1018 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 52 - ID 13658 After a clear night cumuliform clouds are formed in the morning. Why can the base of these clouds become higher during the day? (1) The wind speed is increasing, because the cold air mass changes into a warm air mass. (2) Because the stability increases. (3) Because the surface temperature increases. (4) Because the difference between the temperature and the dewpoint temperature at the initial condensation level becomes smaller. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 53 - ID 4194 What values are used for the forecasted wind at higher levels? (1) Direction relative to true north and speed in knots (2) Direction relative to magnetic north and speed in knots (3) Direction relative to grid north and speed in km/h (4) Direction relative to magnetic north and speed in km/h ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 54 - ID 4181 If CAVOK is reported then (1) any CB's have a base above 5000 FT (2) no clouds are present (3) low level wind shear has not been reported

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(4) no low drifting snow is present ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 55 - ID 1207 How does relative humidity and the dewpoint in an unsaturated air mass change with varying temperature? (1) When temperature decreases, the relative humidity and the dewpoint remain constant. (2) When temperature increases, the relative humidity increases, and the dewpoint decreases. (3) When temperature increases, the relative humidity decreases, and the dewpoint remains constant. (4) When temperature decreases, the relative humidity decreases, and the dewpoint increases. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 56 - ID 5535 On a clear sky, continental ground surface, wind calm, the minimum temperature is reached approximately (1) one hour before sunrise (2) at the moment the sun rises (3) half an hour after sunrise (4) half an hour before sunrise ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 57 - ID 13611 The radiosonde can directly measure: (1) air temperature, humidity, wind. (2) atmospheric pressure, air temperature, humidity. (3) humidity, wind, atmospheric pressure. (4) wind, atmospheric pressure, air temperature. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 58 - ID 12859 What is the height of the lowest cloud forecast for Bangkok at ETA 1400 UTC ? TAF VTBD 271800Z 280024 VRB05KT 1200 BR TEMPO 0002 4000 BECMG 0205 9999 SCT015 BKN100 TEMPO 1118 04010G20KT 5000 TSRASCT009 BKN014 BKN018CB BECMG 2024 6000= (1) 900 feet (2) 1800 feet (3) 1400 feet (4) 1200 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 59 - ID 4080 The geostrophic wind speed is directly proportional to the (1) curvature of isobars (2) sine of latitude (3) horizontal pressure gradient (4) density of the air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 60 - ID 1580 What is the main cause for the formation of a polar front jet stream? (1) The pressure difference, close to the ground, between a high over the Azores and a low over Iceland (2) Strong winds in the upper atmosphere (3) The varied elevations of the tropopause in the polar front region (4) The north-south horizontal temperature gradient at the polar front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 61 - ID 449 Which of the following is typical for the passage of an active cold front in the summer ? (1) Mainly towering clouds (2) Rapid increase in temperature once the front has passed (3) Rapid drop in pressure once the front has passed (4) Mainly layered clouds

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 62 - ID 1998 What does the term METAR signify? (1) A METAR signifies the actual weather report at an aerodrome and is generally issued in half-hourly intervals. (2) A METAR is a flight forecast, issued by the meteorological station several times daily. (3) A METAR is a landing forecast added to the actual weather report as a brief prognostic report. (4) A METAR is a warning of dangerous meteorological conditions within a FIR. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 63 - ID 1589 What flying conditions are normally encountered when flying in cirrus clouds? (1) Average horizontal visibility less than 500 m; nil icing. (2) Average horizontal visibility less than 500 m; light to moderate icing. (3) Average horizontal visibility more than 1000 m; nil icing. (4) Average horizontal visibility more than 1000 m; light to moderate rime ice. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 64 - ID 13821 Which of the following statements is true with regard to mountain waves? (1) The absence of cloud over high ground indicates the absence of mountain waves (2) Mountain waves are not experienced beyond 100 miles downwind from initiating high ground, regardless of the height of the ground (3) Flight with headwind toward high ground is likely to be more hazardous than flight with tailwind toward high ground (4) Flight with tailwind toward high ground is likely to be more hazardous than flight with headwind toward high ground ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 65 - ID 1769 In METAR messages, the pressure group represents the (1) ONH rounded up to the nearest hPa. (2) OFE rounded down to the nearest hPa. (3) OFE rounded to the nearest hPa. (4) ONH rounded down to the nearest hPa. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 66 - ID 2503 How would you characterise an air temperature of -3CTC at the 300 hPa level over western Europe? (1) High (2) Within +/-5°C of ISA (3) Low (4) Very low ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 67 - ID 13605 What is a characteristic of stable air? (1) Unlimited visibility. (2) Stratiform clouds. (3) Temperature decreases rapidly. (4) Fair weather cumulus clouds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 68 - ID 63 A parcel of unsaturated air is lifted to just below the condensation level and then returned to its original level. What is the final temperature of the parcel of air? (1) Higher than the starting temperature. (2) The same as the starting temperature. (3) It depends upon the QFE. (4) Lower than the starting temperature. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 69 - ID 10943 What surface wind is forecast for 2200 UTC ?; EDDF 272200Z 280624 VRB05KT4000 BR SCT005 OVC013 BECMG 1314 9000 SHRA OVC015 PROB40 TEMPO 1416 VRB15G25KT 1600TSRAOVC010CB BECMG 1618 26010KTBKN030 BECMG 2122 CAVOK (1) Calm (2) Variable/05 kt (3) 260710 kt (4) Variable/15 to 25 kt ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 70 - ID 1767 Refer to the following TAF for Zurich.; LSZH 061019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT4000 RAOVC010=; The lowest cloud base forecast at ETA Zurich (1200 UTC) is: (1) 1500 FT. (2) 5000 FT. (3) 1000 FT. (4) 1500 m. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 71 - ID 14261 In the middle of the eye of a hurricane the wind speed is; (1) lower than 63 knots and the air is descending; (2) lower than 63 knots and the air is ascending; (3) higher than 63 knots and the air is descending; (4) higher than 63 knots and the air is ascending; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 72 - ID 13603 What intensity and type of aircraft icing is likely to occur at FL 100 in a thunderstorm, with the freezing level at 7000 FT? (1) Light icing due to clear ice. (2) Moderate to severe icing due to clear ice. (3) Moderate to severe icing due to rime ice. (4) Light icing due to rime ice. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 73 - ID 1221 What is the main composition of clouds classified as "high level clouds"? (1) Water vapour. (2) Ice crystals. (3) Supercooled water droplets. (4) Water droplets. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 74 - ID 12860 What is the dry adiabatic lapse rate ? (1) 3.0°C/1000FT (2) 3.5°C/1000FT (3) 1J°C/1000FT (4) 2.0°C/1000FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 75 - ID 2563 At what degree of icing should ICAO's "Change of course and/or altitude desirable" recommendation be followed? (1) Severe (2) Extreme (3) Moderate (4) Light ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 76 - ID 1692 Refer to the TAF for Bordeaux airport.; FCFR31 281400; LFBD 1524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT 8000 +SHRA BKN015CB PROB30 TSRA =; Flight Lisbon to Bordeaux, ETA 1800 UTC. At ETA Bordeaux what is the lowest quoted visibility forecast ? (1) 10 NM (2) 8NM (3) 10 or more km (4) 8 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 77 - ID 1562 What is the average height of the arctic jet stream core? (1) 20000 FT. (2) 30000 FT. (3) 40000 FT. (4) 50000 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 78 - ID 2717 On an aerodrome, when a warm front is approaching (1) OFE decreases and QNH increases. (2) OFE and ONH increase. (3) OFE increases and ONH decreases. (4) OFE and QNH decrease. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 79 - ID 1771 In Geneva, the local QNH is 994 hPa. The elevation of Geneva is 1411 FT. The QFE adjustment in Geneva is (1) 961 hPa. (2) 967 hPa. (3) 948 hPa. (4) 942 hPa. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 80 - ID 13657 Advection of very cold air over a warm sea current can cause: (1) steaming fog. (2) no fog at all. (3) advection fog. (4) frontal fog. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 81 - ID 13569 For an aircraft making an approach to an airfield located in square 3B, away from the vicinity of the fronts, the most likely weather conditions in winter are: (1) prolonged periods of heavy rain and hail (2) generally overcast, moderate continuous rain and risk of low level wind shear (3) poor visibility in mist and drizzle (4) scattered SC and CU, good visibility

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 82 - ID 4025 Which of the following statements concerning the lifting of a parcel of air is correct ? (1) Unsaturated parcels cool less rapidly than saturated parcels (2) Unsaturated parcels cool at a rate of 0.65°C per 1 00m (3) Unsaturated parcels cool more rapidly than saturated parcels (4) Saturated parcels always cool at a rate of 0.65*C per 100m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 83 - ID 1209 During the late afternoon an air temperature of +12*C and a dew point of +5*C were measured. What temperature change must at least occur during the night in order to induce saturation? (1) It must decrease to +7°C. (2) It must decrease by 5°C. (3) It must decrease to +5*C. (4) It must decrease to +6°C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 84 - ID 13814 The arctic front is the boundary between: (1) polar air and arctic air. (2) arctic air and tropical air. (3) cold polar air and less cold polar air. (4) polar air and tropical air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 85 - ID 2007 Refer to the following TAF extract; BECMG 1821 2000 BR BKN004 PROB30 TEMPO 2124 0500 FG W001 What does the abbreviation "PROB3011 mean? (1) The cloud ceiling should lift to 3000 FT.

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(2) Probability of 30%. (3) Conditions will last for at least 30 minutes. (4) Change expected in less than 30 minutes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 86 - ID 2593 Which of the following meteorological phenomena can rapidly change the braking action of a runway? (1) +FZRA (2) HZ (3) FG (4) MIFG ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 87 - ID 457 In which of these cloud types can icing be virtually ruled out? (1) cu (2) CI (3) sc (4) NS ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 88 - ID 1997 Which thunderstorms move forward the fastest? (1) Orographic thunderstorms. (2) Thermal thunderstorms. (3) Thunderstorms formed by lifting processes. (4) Frontal thunderstorms. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 89 - ID 13730 The ICAO Standard Atmosphere (ISA) assumes that temperature will reduce at the rate of (1) 1,98°C per 1000 FT up to 36090 FT after which it re mains constant to 65617 FT (2) 2°C per 1000 FT up to 36090 FT and will then inc rease at 0,3°C per 1000 FT up to 65617 FT (3) 2°C per 1000 FT up to 65617 FT after which it wi ll remain constant to 104987 FT (4) 1,98°C per 1000 FT up to 36090 FT and will then ri se at 0,3°C per 1000 FT up to 65617 FT when it will remain constant ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 90 - ID 10973 Which one of the following can provide the initial lifting leading to air mass thunderstorms? (1) Mountain waves (2) Advection of cold air over a warm sea (3) Low level wind shear (4) Advection of warm air over a cold sea ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 91 - ID 13663 An aircraft descents in layered clouds; the freezing level is situated at FL 60. At what levels is the probability for airframe icing the highest? (1) Between FL 120 and FL 60. (2) Between FL 120 and FL 180. (3) Between FL 60 and FL 20. (4) AtFLMO. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 92 - ID 1228 Which degree of aircraft turbulence is determined by the following ICAO description? "There may be moderate changes in aircraft attitude and/or altitude but the aircraft remains in positive control at all times. Usually, small variations in air speed. Changes in accelerometer readings of 0.5 to 1.0 g at the aircraft's center of gravity. Occupants feel strain against seat belts. Loose objects move about. Food service and walking are difficult."

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(1) Severe. (2) Moderate. (3) Light. (4) Violent. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 93 - ID 12841 Radiation fog most frequently occurs in: (1) high pressure systems over land. (2) low pressure systems over land. (3) low pressure systems over sea. (4) high pressure systems over sea. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 94 - ID 2250 If the QNH at Locarno (200 metres above sea level) is 1025 hPa, what is the approximate QFE? (1) 1005 hPa (2) 995 hPa (3) 1025 hPa (4) 1000 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 95 - ID 0 Freezing fog exists if fog droplets (1) are freezing very rapidly (2) are frozen (3) are supercooled (4) freeze when temperature falls below zero ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 96 - ID 13572 The cloud type most applicable to most of square 3B is (1) NS (2) cs (3) sc (4) AS

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 97 - ID 2511 The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10*C higher than a standard atmosphere. What is the QNH? (1) 1016 hPa (2) More than 1016 hPa (3) Less than 1016 hPa (4) It is not possible to give a definitive answer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 98 - ID 4151 A significant inversion at low height is a characteristic of (1) nocturnal radiation (2) advection fog (3) cumulus clouds (4) the passage of cold front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 99 - ID 2581 Which of the following best describes Zone B? (1) Depression (2) col (3) Trough of low pressure (4) Ridge of high pressure

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 100 - ID 4165 A layer in which the temperature remains constant with height is (1) absolutely stable (2) unstable (3) conditionally unstable (4) neutral ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 101 - ID 10911 Sea breezes are most likely to occur when (1) a strong pressure gradient, relatively high sea temperatures and clear skies at night exist (2) slack pressure gradient and clear skies result in relatively high land temperatures (3) a strong pressure gradient, relatively high sea temperatures and overcast conditions persist (4) a slack pressure gradient, relatively high sea temperatures and overcast conditions persist ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 102 - ID 13708 In which conditions would you most likely encounter clear icing, and how would it normally appear? (1) Cumuliform clouds, small water droplets, temperatures between -2CTC and 25*C. Appears transparent and tends to take the shape of the surface on which it freezes. (2) Stratiform clouds, small water droplets, temperatures between -1CTC and -2CTC. Appears granular and tends to accumulate forward into the air stream. (3) Stratiform clouds, large water droplets, temperatures well below freezing. Appears opaque and builds forward from leading surface into a sharp edge. (4) Cumuliform clouds, large water droplets, temperatures between CTC and -15*C. Appears smooth and tends to spread back over an aircraft wing. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 103 - ID 1105 Which cloud type may indicate the presence of severe turbulence ? (1) Stratocumulus

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(2) Cirrocumulus (3) Nimbostratus (4) Altocumulus lenticularis ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 104 - ID 1559 How does a pilot react to heavy freezing rain at 2000 FT/AGL, when he is unable to deice, nor land? (1) He turns back before the aircraft loses manoeuvrability. (2) He descends to the warm air layer below. (3) He continues to fly at the same altitude. (4) He ascends to the cold air layer above. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 105 - ID 10926 The pressure system indicated when, in a vertical cross section, the lower situated pressure surfaces bulge upward and the higher situated pressure surfaces bulge downward is a (1) warm high pressure area (2) cold high pressure area (3) cold low pressure area (4) warm low pressure area ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 106 - ID 10965 Which of the following sets of conditions are most likely to lead to the formation of advection fog? (1) Cold maritime air flowing over a warmer land surface at a speed greater than 15 kt (2) Clear skies at night over an inland marshy area (3) A mild moist airstream flowing over colder surfaces with a wind in excess of 30 kt (4) A mild moist airstream flowing over colder surfaces with the wind speed less than 15 kt ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 107 - ID 14265 Which of the following statements is correct concerning the geostrophic wind?; (1) It is present at latitudes higher than about 15 degrees north/south. (2) It is only present in the friction layer.; (3) A horizontal temperature difference of at least 5 degrees Celsius per 100 km is required to have geostrophic wind conditions.; (4) It is present in a pressure system consisting of curved and non-parallel isobars.; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 108 - ID 2525 What is the approximate speed of a 25-knot wind, expressed in kilometres per hour? (1) 45 km/h (2) 60 km/h (3) 55 km/h (4) 35 km/h ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 109 - ID 3727 The environmental lapse rate in an actual atmosphere (1) varies with time (2) has a fixed value of 2°C/1000 FT (3) has a fixed value of 1 °C/100m (4) has a fixed value of 0.65°C/100m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 110 - ID 2533 Where, in central Europe, are the highest wind speeds to be found ? (1) At about 5500 metres altitude (2) Just below the tropopause

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(3) In the stratosphere (4) Close to the ground ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 111 - ID 1208 When a given mass of air descends, what effect will it have on relative humidity? (1) It increases. (2) It decreases. (3) It increases up to 100%, then remains stable. (4) It remains constant. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 112 - ID 10918 The formation of morning fog before sunrise is possible if (1) the turbulence in the lower layers is moderate (2) the sky is overcast (3) the wind is strong (4) air temperature and dew point are equal or close to one another ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 113 - ID 10946 What is the lowest possible cloudbase forecast for 2300 UTC?; EDDF 272200Z 280624 VRB05KT4000 BR SCT005 OVC013 BECMG 1314 9000 SHRAOVC015 PROB40 TEMPO 1416 VRB15G25KT 1600TSRAOVC010CB BECMG 1618 26010KTBKN030 BECMG 2122 CAVOK (1) 1500 feet (2) 500 feet (3) 5000 feet (4) 3000 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 114 - ID 13669 At a station at the surface the significant weather with a warm front will come: (1) only at the same time as the front passes. (2) after the front has passed. (3) mostly before the front passes. (4) after the warm sector has passed. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 115 - ID 1216 Which of the following processes within a layer of air may lead to the building of CU and CB clouds? (1) Convection. (2) Radiation. (3) Frontal lifting within stable layers. (4) Subsidence. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 116 - ID 0 Which of the following phenomena are formed when a moist, stable layer of air is forced to rise against a mountain range ? (1) Showers and thunderstorms (2) Stratified clouds (3) Inversions (4) Areas of severe turbulence ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 117 - ID 1590 Which of the following is most likely to lead to the dissipation of radiation fog ? (1) A marked decrease in wind velocity close to the ground (2) A build up of a high pressure area resulting in adiabatic warming associated with a sinking air mass (3) Ground cooling caused by radiation during the night

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(4) A marked increase in wind velocity near the ground ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 118 - ID 1766 Refer to the following TAF for Zurich.; LSZH 261019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT4000 RAOVC010=; The lowest visibility forecast at ETA Zurich 1430 UTC is: (1) 10 km. (2) 4 km. (3) 6NM. (4) 6 km. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 119 - ID 10881 During the approach to Mumbai (19*N - 73°E ) on the wes t coast of India, you are listening to the ATIS on 15 July at 0700 LT. Which of the following reports is most likely ? (1) 05013KT 3500 MIFG SCT003 BKN005 19/14 01012 BECMG 8000= (2) 02005KT CAVOK 24/09 01030 NOSIG= (3) 30012KT 9999 SCT030 SCT200 20/16 01025 TEMPO 4000= (4) 25014KT4500 SHRASCT015 BKN025CB 25/24 Q1006 NOSIG= ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 120 - ID 2560 What will be the effect on the reading of an altimeter of an aircraft parked on the ground shortly before an active cold front passes? (1) It will fluctuate up and down by about +/- 50 feet. (2) It will remain unchanged. (3) It will be increasing. (4) It will be decreasing. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 121 - ID 5028 Weather conditions at Bombay during January are mainly influenced by the (1) NW monsoon (2) SE monsoon (3) NE monsoon (4) SW monsoon

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 122 - ID 4156 The type of icing that occurs in dense clouds with large supercooled drops that have a temperature of-5*C is most likely to be (1) clear ice (2) rime ice (3) cloudy ice (4) hoar frost ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 123 - ID 1092 An aircraft is flying in the southern hemisphere at low altitude (less than 2000 feet) and going directly away from a centre of low pressure. What direction, relative to the aircraft, does the wind come from ? (1) From the right and slightly on the tail (2) From the left and slightly on the tail (3) From the left and slightly on the nose (4) From the right and slightly on the nose ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 124 - ID 1570 Which of the four answers is a correct interpretation of data from the following METAR ? LSZH 050820Z 16003KT 0400 R14/P1500 R16/1000 FZFG W003 M02/M02 Q1026 BECMG 2000 BR = (1) RVR for runway 14 1500 m, visibility 400 m, QNH 1026 hPa, wind 160° at 3 kt. (2) Visibility 1000 m, RVR 400 m, freezing level at 300 m, variable winds, temperature 2°C. (3) RVR for runway 16 1000 m with no distinct tendency, visibility increasing in the next 2 hours to 2000 m, vertical visibility 300 m, temperature-2°C. (4) Visibility 400 m, RVR for runway 16 1000 m with no distinct tendency, dew point -2*C, freezing fog. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 125 - ID 1992 Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG W001 What visibility is forecast for 2400 UTC? (1) Between 500 m and 2000 m. (2) 2000 m. (3) 500 m. (4) Between 0 m and 1000 m. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 126 - ID 2528 What is the wind speed given in a METAR report based on? (1) The average speed of the previous 10 minutes (2) The strongest gust in the previous hour (3) The average speed of the previous 30 minutes (4) The actual speed at the time of recording ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 127 - ID 12832 Which statement does correspond to the definition of severe turbulence? (1) Aircraft will be damaged and an emergency landing will be absolutely necessary. (2) Difficulty in walking, occupants feel strain against seat belts, loose objects move about. (3) Aircraft may be out of control for short periods, occupants are forced violently against seat belts, loose objects are tossed about. (4) Aircraft gets out of control and crashes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 128 - ID 1600 What cloud cover is typical for a wide warm sector of a polar front depression over Central Europe in the summer ? (1) Sky clear (2) ST with drizzle (3) BKN CU and CB (4) Fair weather CU ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 129 - ID 12803 Where do the trade winds blow? (1) Between the "horse latitudes" and the mid latitudes. (2) At the equator. (3) Between the "horse latitudes" and the equatorial highs. (4) Between the "horse latitudes" and the doldrums. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 130 - ID 10900 In the weather pattern behind a cold front, the visibility outside precipitation is (1) good and the precipitation is showers. (2) low and the precipitation is steady rain. (3) low and the precipitation is showers. (4) good and the precipitation is steady rain. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 131 - ID 10979 Which weather chart gives information about icing ? (1) 500 hPa chart (2) Surface chart (3) Significant weather chart (4) 700 hPa chart ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 132 - ID 2543 Which one of the displayed cloud forms is representative of altocumulus lenticularis? (1) 3 (2) 1 (3) 4 (4) 2

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 133 - ID 1273 What weather conditions are prevalent during the summer, over the North Sea, approximately 300 km behind a quickly moving cold front? (1) Advectionfog. (2) Cloud cover mostly scattered, isolated showers. (3) 8 octas CS, AS without precipitation. (4) Rain covering a large area, 8 octas NS. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 134 - ID 10924 The most likely place to encounter clear air turbulence associated with a jet stream is (1) well below the core (2) 5000 feet or more above the core (3) on the tropical side of the core (4) close to the core on the side facing the polar air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 135 - ID 4255 While descending through a cloud cover at high level, a small amount of a white and rough powderlike contamination is detected along the leading edge of the wing. This contamination is called: (1) Clear ice. (2) Mixed ice. (3) Frost. (4) Rime ice. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 136 - ID 1258 At what time of day, or night, is radiation fog most likely to occur? (1) Shortly after sunrise. (2) Late evening. (3) Shortly after midnight.

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(4) At sunset. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 137 - ID 1254 Where is the source of continental tropical air that affects Europe in summer? (1) The southern Balkan region and the Near East. (2) Southern France. (3) The Azores region. (4) Southern Italy. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 138 - ID 5000 Under anticyclone conditions in the northern hemisphere, with curved isobars the speed of the gradient wind is (1) less than the geostrophic wind (2) greater than the geostrophic wind (3) the same as the thermal component (4) proportional only to the Coriolis force ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 139 - ID 1285 What type of air movement is associated with the centre line of a trough? (1) Divergence with lifting. (2) Convergence with descending air. (3) Convergence with lifting. (4) Divergence with descending air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 140 - ID 1359 How are well separated CB clouds described on the Significant Weather Chart? (1) FRQ CB. (2) ISOLCB. (3) EMBD CB. (4) OCNLCB. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 141 - ID 13610 A cumulonimbus cloud at mid-latitudes in summer contains (1) ice crystals and water droplets but never supercooled water droplets (2) only water droplets (3) ice crystals, water droplets and supercooled water droplets (4) only ice crystals ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 142 - ID 12794 Which of the following processes will increase the stability of an air mass? (1) Warming of the air mass from below. (2) Cooling by the underlying surface. (3) Advection of colder air aloft. (4) Addition of water vapour in the lower layer. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 143 - ID 5020 The arrows labelled "t" represents the mean track of tropical revolving storms which occur mainly from (1) June to October and are called cyclones (2) June to October and are called tornadoes (3) December to April and are called hurricanes (4) June to October and are called hurricanes

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 144 - ID 3736 Which statement is true ? (1) ONH is lower than 1013.25 hPa at anytime (2) ONH can be 1013.25 hPa only for a station atMSL (3) ONH can be lower as well as higher than 1013.25 hPa (4) ONH can not be 1013.25 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 145 - ID 5001 In which of the following areas do surface high pressure systems usually predominate over the North Atlantic region between 3CTN and 65*N and the adjoining land areas during the northern summer? (1) Greenland, Azores, NE Canada (2) Greenland, SW Europe, NE Canada (3) Iceland, SW USA, Azores (4) Azores, SE USA, SW Europe

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 146 - ID 13562 The cloud type most applicable to square 2B is (1) sc (2) CB (3) ST (4) cs Please select A, B, C or D from above.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 147 - ID 4064 Low level vertical wind shear can be expected during the night (1) and early morning only in summer (2) in association with radiation inversions (3) and early morning only in winter (4) in unstable atmospheres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 148 - ID 5018 Why do tropical revolving storms tend to develop mostly in the western parts of the tropical oceans? (1) Because the gulf formation of the coastlines triggers a strong rotary circulation (2) Because there is a maximum of humidity as a result of the trade winds long sea passage (3) Because they are areas in which there is a strong progressive wind shear with increase of height (4) Because there is a maximal temperature difference between land mass and sea ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 149 - ID 2126 Half the mass of the atmosphere is found in the first (1) 8 km (2) 3 km (3) 5 km

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(4) 11 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 150 - ID 4070 The wind tends to follow the contour lines (isohypses) above the friction layer because (1) contour lines are lines that connect points with the same wind speed in the upper air (2) the friction of the air with the earth's surface gives the airflow a diversion perpendicular to the gradient force. (3) the coriolis force tends to balance with the horizontal pressure gradient force (4) the coriolis force acts perpendicular on a line that connects high and low pressure system ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 151 - ID 1613 Under which conditions would you expect the heaviest clear ice accretion to occur in a CB? (1) Between-2°C and-15°C (2) Between -30°C and -40°C (3) Close to the freezing level (4) Between -20°C and -30°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 152 - ID 10950 What visibility is most likely to be experienced at 1400 UTC ?; EDDF 272200Z 280624 VRB05KT4000 BR SCT005 OVC013 BECMG 1314 9000 SHRAOVC015 PROB40 TEMPO 1416 VRB15G25KT 1600TSRAOVC010CB BECMG 1618 26010KTBKN030 BECMG 2122 CAVOK (1) 9000 metres (2) 4000 metres (3) 1600 metres (4) 1000 metres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 153 - ID 4136 A vertical temperature profile indicates the possibility of severe icing when the temperature profile (1) intersects the CTC isotherm twice (2) coincides with a dry adiabatic lapse rate (3) indicates temperatures above 3*C (4) indicates temperatures below -4CTC ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 154 - ID 1986 Where is the most dangerous zone in a tropical revolving storm? (1) About 600 km away from the eye. (2) In the wall of clouds around the eye. (3) Anywhere in the eye. (4) In the centre of the eye. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 155 - ID 132 Under what condition does pressure altitude have the same value as density altitude ? (1) When the altimeter has no position error. (2) When the altimeter setting is 1013.2 hPa. (3) At standard temperature. (4) At sea level when the temperature is 0*C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 156 - ID 4193 In what hPa range is an upper weather chart for FL 340 situated? (1) 600 - 500 hPa (2) 500 - 400 hPa (3) 300 - 200 hPa (4) 400 - 300 hPa

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 157 - ID 4187 The RVR, as reported in a METAR, is always the (1) lowest value of the A-, B- and C-position (2) value representative of the touchdown zone (3) highest value of the A-, B- and C-position (4) average value of the A-, B- and C-position ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 158 - ID 2337 The presence of ice pellets at the surface is evidence that (1) freezing rain occurs at a higher altitude (2) a cold front has passed (3) there are thunderstorms in the area (4) a warm front has passed ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 159 - ID 4083 Geostrophic wind (1) is directly proportional to the density of the air (2) is perpendicular to the horizontal pressure gradient force (3) veers with height if cold air is advected in the northern hemisphere (4) always increases with increasing height ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 160 - ID 1358 In the TAF for Dehli, during the summer, for the time of your landing you note: TEMPO TS. What is the maximum time this deterioration in weather can last in anyone instance ? (1) 120 minutes. (2) 10 minutes. (3) 20 minutes. (4) 60 minutes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 161 - ID 4067 Geostrophic wind is the wind when isobars are (1) curved lines and friction is involved. (2) straight lines and friction is involved. (3) curved lines and no friction is involved (4) straight lines and no friction is involved. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 162 - ID 10891 In a METAR message, BR and HZ mean respectively: (1) BR = mist HZ = smoke (2) BR = mist HZ = widespread dust (3) BR = mist HZ = haze (4) BR = fog HZ = haze ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 163 - ID 1775 While approaching your destination aerodrome you receive the following message: RVR runway 23: 400m This information indicates the (1) minimum visibility at this aerodrome, with runway 23 being the one in service. (2) visibility on runway 23. (3) length of runway which a pilot in an aircraft on the ground would see, on the threshold of runway 23. (4) portion of runway which a pilot on the threshold of any of the runways would see, with runway 23 in service. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 164 - ID 13732 The region of the globe where the greatest number of tropical revolving storms occur is (1) the south-western Indian ocean, affecting Madagascar, Mauritius and the island of Rnion. (2) the Caribbean sea, affecting the West Indies, Mexico and the south-east coastline of the USA. (3) the northern Indian ocean, affecting India, Sri Lanka and Bangladesh. (4) the north-west Pacific, affecting Japan, Taiwan, Korea and the Chinese coastline. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 165 - ID 1279 When are the rainy seasons in equatorial Africa? (1) March to May and August to October. (2) December to February and July to October. (3) March to May and October to November. (4) April to July and December to February. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 166 - ID 2010 You cross a jet stream in horizontal flight at approximately right angles. While crossing, in spite of a strong wind of 120 kt, you notice the temperature barely changes. Which of the following statements is correct ? (1) Since the result of such readings seems impossible, you will have the instruments tested after landing. (2) This phenomenon does not surprise you at all, since normally no large temperature differences are possible at these heights. (3) This phenomenon is absolutely normal as you are crossing the jet core. (4) You assume the front associated with the jet stream to be very weak with practically no temperature difference between the two air masses. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 167 - ID 1587 Which of the following cloud is classified as low level cloud ? (1) cs (2) AS (3) cc (4) ST ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 168 - ID 239 How is the direction and speed of upper winds described in forecasts ? (1) The direction is relative to true north and the speed is in knots. (2) The direction is relative to magnetic north and the speed is in knots. (3) The direction is relative to true north and the speed is in miles per hour. (4) The direction is relative to magnetic north and the speed is in miles per hour. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 169 - ID 1098 What pressure is defined as OFE? (1) The pressure reduced to sea level using ISA temperatures (2) The pressure of the altimeter (3) The pressure at field elevation (4) The pressure reduced to sea level using actual temperatures ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 170 - ID 2534 If Paris reports a wind of 19015KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ? (1) 25025KT (2) 16020KT (3) 22030KT (4) 22010KT ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 171 - ID 228 At what time of the year are tornadoes most likely to occur in North America? (1) Autumn, winter. (2) Spring, summer. (3) Summer, autumn. (4) Winter. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 172 - ID 1684 At which pos (1) (2) (3) (4) Question 172 of 1021 ID No. Q1684 At which position is the development of thunderstorms most likely, and wh at is the maximum height of the CB clouds at 00 UTC? A Position A, FL 200 . B Position B.FL 270. c Position C.FL 200. D Positi on D.FL 290.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 173 - ID 13810 The diurnal variation in temperature is largest when

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(1) the sky is overcast and the wind is weak (2) the sky is clear and the wind is strong (3) the sky is clear and the wind is weak (4) the sky is overcast and the wind is strong ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 174 - ID 4131 During an adiabatic process heat is (1) lost (2) added but the result is an overall loss (3) added (4) neither added nor lost ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 175 - ID 2251 If you are flying at FL 300 in an air mass that is 15*C warmer than a standard atmosphere, what is the outside temperature likely to be? (1) -30°C (2) -60°C (3) -45°C (4) -15°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 176 - ID 10913 Surface temperature inversions are frequently generated by (1) terrestrial radiation on a calm clear night (2) an unstable air mass causing convection currents and mixing of the atmosphere at lower levels (3) compression causing the release of latent heat in a layer of stratiform cloud (4) gusting winds increasing surface friction during the day with consequent mixing at the lower levels ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 177 - ID 2716 Low level wind shear is likely to be greatest (1) at the condensation level when there is strong surface friction. (2) at the top of a marked surface-based inversion. (3) at the top of the friction layer. (4) at the condensation level when there is no night radiation. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 178 - ID 2583 Which of the following best describes Zone D? (1) Anticyclone (2) Trough of low pressure (3) Depression (4) Ridge of high pressure

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 179 - ID 235 What weather is prevalent in easterly waves? (1) Frontal weather. (2) Continuous rain. (3) Clear skies. (4) Thunderstorms and rain. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 180 - ID 4071 The wind speed in a system with curved isobars compared to a system with straight isobars is (other conditions being the same) (1) always lower (2) higher if curvature is cyclonic (3) always higher (4) higher if curvature is anticyclonic ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 181 - ID 12858 What is the lowest cloud base forecast for arrival at Geneva (ETA 1200 UTC)? TAF LSGG 020900Z 021019 18007KT 9999 SCT020 BKN100 BECMG 1114 8000 RASCT010 OVC020 PROB30 TEMPO 1018 VRB10G25KTTSRASCT005 BKN015CB= (1) 500 m (2) 500 FT (3) 1000 FT (4) 1000 m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 182 - ID 5544 At the top of orographic waves, in mountainous regions, the cloud most likely to be encountered is (1) cirro stratus. (2) cirrus. (3) cumulus mediocris. (4) altocumulus lenticularis.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 183 - ID 1625 In which of the following 1850 UTC METAR reports, is the probability of fog formation, in the coming night, the highest? (1) 00000KT9999 SCT300 21/01 Q1032 NOSIG = (2) 22004KT6000-RASCT012 OVC030 17/14 Q1009 NOSIG = (3) VRB01KT8000 SCT250 11/10 Q1028 BECMG 3000 BR = (4) VRB02KT2500 HZSCT120 14/M08 Q1035 NOSIG = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 184 - ID 2559 What will be the effect on the reading of an altimeter of an aircraft parked on the ground during the period following the passage of an active cold front ? (1) It will remain unchanged. (2) It will have increased. (3) It will have decreased. (4) It will show a small increase or decrease. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 185 - ID 2587 According to ICAO, which symbol indicates a severe line squall ? (1) Symbol a) (2) Symbol c) (3) Symbol b) (4) Symbol d)

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 186 - ID 13693 In which of the following METAR reports is the probability of fog formation in the coming night the highest? (1) 201850Z 06018G30KT 5000 -RAOVC010 04/01 O1024NOSIG= (2) 201850Z21003KT8000 SCT250 12/m08 Q1028 NOSIG= (3) 201850Z 25010KT 4000 RABKN012 OVC030 12/10Q1006 TEMPO 1500= (4) 201850Z 15003KT6000 SCT120 05/04 01032 BECMG 1600 BR= ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 187 - ID 1597 How do air masses move at a warm front ? (1) Warm air undercuts a cold air mass (2) Warm air overrides a cold air mass (3) Cold air undercuts a warm air mass (4) Cold air overrides a warm air mass ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 188 - ID 1362 Of the four radio soundings, select the one that indicates ground fog: (1) 4 (2) 3 (3) 2 (4) 1 x 2

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 189 - ID 3716 The troposphere is the (1) part of the atmosphere below the tropopause (2) part of the atmosphere above the stratosphere (3) boundary between the mesosphere and thermosphere (4) boundary between the stratosphere and the mesosphere ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 190 - ID 225 The wind indicator for a weather observation receives the measured value from an anemometer. Where is this instrument placed? (1) On the roof of the weather station. (2) On a mast 6-10 m above the runway. (3) 1 m above the runway. (4) Close to the station about 2 m above the ground. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 191 - ID 10914 Surface-based temperature inversions are common during (1) cloud-free days in summer when the ground is dry (2) cloudy days in winter when the ground is wet (3) cloud-free nights in winter when the ground is dry (4) cloudy days in summer when the ground is wet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 192 - ID 3717 The tropopause is a level at which (1) water vapour content is greatest (2) vertical currents are strongest (3) temperature ceases to fall with increasing height (4) pressure remains constant ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 193 - ID 1989 What is the most significant difference between an equatorial jet stream and all the other jet streams ? (1) Horizontal dimension. (2) Wind direction. (3) Vertical dimension. (4) Wind speed. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 194 - ID 10972 Which of the following types of jet streams can be observed all year round? (1) Equatorial jet stream / polar front jet stream. (2) Arctic jet stream / subtropical jet stream. (3) Equatorial jet stream / arctic jet stream. (4) Subtropical jet stream / polar front jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 195 - ID 10861 An aircraft maintains a constant indicated altitude of 5500 FT from A (1050 FT/AMSL- ONH 968 hPa) to B (650 FT/AMSL- QNH 1016 hPa). Assuming that the altimeter subscale setting remains unchanged at 968 hPa, the actual height of the aircraft above the surface at B will be (1) 4854 FT (2) 7446 FT (3) 6146 FT (4) 6796 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 196 - ID 2708 In Zurich during a summer day the following weather observations were taken: 160450Z 23015KT 3000 +RA SCT008 SCT020 OVC030 13/12 * 01010 NOSIG = 160650Z25008KT6000 SCT040 BKN090 18/14 01010 RERANOSIG = 160850Z25006KT8000 SCT040 SCT100 19/15 O1009NOSIG161050Z24008KT9999SCT040SCT100 21/15O1008NOSIG=; 161250Z 23012KTCAVOK 23/16 Q1005 NOSIG = 161450Z 23016KT 9999 SCT040 BKN090 24/17 Q1003 BECMG 25020G40KTTS =161650Z24018G35KT 3000 +TSRASCT006 BKN015CB 18/16 (1) A cold front passed the station early in the morning and a warm front during late afternoon (2) Storm clouds due to warm air came close to and grazed the station (3) A warm front passed the station early in the morning and a cold front during late afternoon (4) A trough line passed the station early in the morning and a warm front during late afternoon

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 197 - ID 1569 You receive the following METAR: LSGG 120750Z 00000KT 0300 R05/0700N FG W001 M02/M02 Q1014 NOSIG = What will be the RVR at 0900 UTC? (1) 700 m. (2) 300 m. (3) The RVR is unknown, because the "NOSIG" does not refer to RVR. (4) 900 m. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 198 - ID 10887 Hazardous hailstones, reaching the ground, are most likely to be experienced below CB clouds situated (1) in continental interiors near the equator (2) over the sea near the equator (3) in continental interiors in middle latitudes (4) over the sea in middle latitudes ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 199 - ID 2175 Which type of fog is likely to form when air having temperature of 15*C and dew point of 12*C blows at 10 knots over a sea surface having temperatures of 5*C ? (1) Steam fog (2) Radiation fog (3) Frontal fog (4) Advection fog ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 200 - ID 2585 According to ICAO, which symbol indicates a tropical revolving storm? (1) Symbol a) (2) Symbol b) (3) Symbol d) (4) Symbol c)

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 201 - ID 10943 What is signified if an occlusion is described as "cold"? (1) It derives from a polar depression (2) The air ahead of the associated warm front is colder than the air behind the associated cold front (3) On meeting the warm front, the cold front moves up the warm frontal surface (4) The air ahead of the associated warm front is less cold than the air behind the associated cold front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 202 - ID 2544 Which one of the displayed cloud forms is representative of a cumulonimbus capillatus? (1) 3 (2) 2 (3) 1 (4) 4

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 203 - ID 2047 Which area of a polar front jet stream in the northern hemisphere has the highest probability of turbulence? (1) In the core of the jet stream. (2) Looking downstream, the area to the left of the core. (3) Above the core in the boundary between warm and cold air. (4) Looking downstream, the area to the right of the core. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 204 - ID 4030 Relative humidity depends on (1) moisture content and temperature of the air (2) moisture content of the air only (3) temperature of the air only (4) moisture content and pressure of the air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 205 - ID 4267 Aircraft struck by lightning may sometimes get considerable damage and at least temporarily the manoeuvring of the aircraft will be made more difficult. Which one of the following statements is correct? (1) Aircraft made by composite material may get severe damage, the crew may be blinded and temporarily lose the hearing. (2) An aircraft has in the atmosphere the same qualities as a "Faradays cage", which means that struck of lightning seldom occurs. But if it happens, the result will be an occasional engine failure. The crew may get a shock. (3) An aircraft made by metal has a certain capacity to attract a lightning, but the lightning will follow the surface and therefore no damage will be caused. (4) Aircraft made by composite material can't conduct a lightning and will therefore very seldom be struck. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 206 - ID 0 Which of the following circumstances most favour the development of radiation fog? (1) Warm moist air at the windward side of a mountain (2) Maritime tropical air flowing over cold sea (3) Moist air over land during clear night with little wind (4) Advection of very cold air over much warmer sea ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 207 - ID 4143 An air mass is unstable when (1) an ascending parcel of air continues to rise to a considerable height. (2) temperature increases with height (3) pressure shows a marked variation over a given horizontal area (4) temperature and humidity are not constant ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 208 - ID 2174 What causes surface winds to flow across the isobars at an angle rather than parallel to the isobars ?

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(1) Greater density of the air at the surface (2) Greater atmospheric pressure at the surface (3) Coriolis force (4) Surface friction ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 209 - ID 10852 Absolute instability in the atmosphere will occur when the environmental lapse rate is (1) greater than both saturated adiabatic lapse rate and dry adiabatic lapse rate (2) less than both saturated adiabatic lapse rate and dry adiabatic lapse rate (3) less than saturated adiabatic lapse rate (4) greater than saturated adiabatic lapse rate but less than dry adiabatic lapse rate ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 210 - ID 10360 An aircraft maintains a constant indicated altitude of 4500 FT from A (360 FT/AMSL- QNH 986 hPa) to B (690 FT/AMSL- ONH 1011 hPa). Assuming that the altimeter sub-scale setting remains unchanged at 986 hPa, the actual height of the aircraft above the surface at B will be (1) 4485 FT (2) 4815 FT (3) 5175 FT (4) 3135 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 211 - ID 12792 Which of the following situations favours the formation of heavy thunderstorms? (1) A cold front approaching a mountain range in the evening. (2) A cold front on the leeward side of a mountain range. (3) A warm sector moving over a snow-covered ground. (4) The passage of a warm front in the morning. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 212 - ID 1259 What is the average vertical extent of radiation fog? (1) 500 FT. (2) 5 000 FT. (3) 10 000 FT. (4) 2 000 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 213 - ID 4174 On a particular day part of a polar front jet stream runs from north to south in the northern hemisphere. This means that (1) above the core of the jet the horizontal temperature gradient runs from north to south (2) below the core of the jet the horizontal temperature gradient runs from north to south (3) the polar air is on the eastern side and above the core of the jet (4) the polar air is below and to the east of the core of the jet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 214 - ID 3721 What of the following is the most important constituent in the atmosphere from a weather stand-point ? (1) Nitrogen (2) Hydrogen (3) Water vapour (4) Oxygen ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 215 - ID 0 Which FL corresponds with the 700 hPa pressure level ?

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(1) FL100 (2) FL390 (3) FL180 (4) FL300 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 216 - ID 5027 Weather conditions at Bombay during early July are mainly influenced by the (1) NE monsoon and the proximity of the ITCZ (2) SW monsoon (3) passage of frontal system generated in the south Indian ocean (4) high incidence of tropical revolving storms originating in the Persian gulf

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 217 - ID 1199 Absolute instability is said to exist whenever the environmental lapse rate (1) is less than the dry adiabatic lapse rate (2) exceeds the dry adiabatic lapse rate (3) is between the dry and saturated adiabatic lapse rate (4) is less than the saturated adiabatic lapse rate ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 218 - ID 4084 In a low pressure system the convergence at the surface is caused by (1) the inbalance of the horizontal gradient force and the Coriolis force (2) the curvature of the isobars (3) frictional forces (4) centripetal forces ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 219 - ID 12824 You are flying at FL 200. Outside air temperature is -40*C, and the pressure at sea level is 1033 hPa. What is the true altitude? (1) 20630 ft (2) 19310ft (3) 18290 ft (4) 21770 ft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 220 - ID 2550 Under which of these conditions is radiation fog most likely to form? (1) Very dry air (2) Very low temperatures (3) Little or no cloud (4) Strong surface winds ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 221 - ID 13598 What does the code R24R/P1500 mean? (1) RVR RWY 24 right below 1500 metres. (2) RVR RWY 24 right above 1500 metres. (3) RVR RWY 24 right 1500 metres. (4) Snow clearance in progress on RWY 24 right, useable runway length 1500 metres. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 222 - ID 13560 The dotted line designated "Z" represents the (1) mean position of the intertropical convergence zone (ITCZ) during July (2) northerly limit of the sub tropical jet stream during July (3) mean position of the intertropical convergence zone (ITCZ) during January (4) northerly limit of the SE trade winds during January

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 223 - ID 2006 Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG W001 What does the abbreviation "BKN00411 mean? (1) 1 -4 oktas, ceiling 400 m. (2) 4- 8 oktas, ceiling 400 m. (3) 5-7oktas,ceiling400FT. (4) 1 -4 oktas, ceiling 400 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 224 - ID 1583 A parcel of moist but not saturated air rises due to adiabatic effects. Which of the following changes ? (1) Specific humidity (2) Relative humidity (3) Mixing ratio (4) Absolute humidity

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 225 - ID 4066 You are flying from east to west in the northern hemisphere at the 500 hPa pressure surface. Which of the following statements is correct? (1) If the wind is from the north you are gaining altitude (2) If you have a head wind you are gaining altitude (3) If you have a tail wind you are losing altitude (4) If the wind is from the south you are gaining altitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 226 - ID 10951 What weather conditions are indications of the summer monsoon in India? (1) Sandstorms. (2) Fog. (3) Stratus clouds and drizzle. (4) Thunderstorms, showers of heavy rain. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 227 - ID 1264 Which of the following conditions are you most likely to encounter when approaching an active warm front at medium to low level ? (1) Severe thunderstorms at low altitude. (2) High cloud base, good surface visibility, and isolated thunderstorms. (3) Extreme turbulence and severe lightning striking the ground. (4) Low cloud base and poor visibility. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 228 - ID 13563 The cloud type most applicable to square 2C is (1) CB (2) cs (3) cu (4) AS

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 229 - ID 128 What, approximately, is the average height of the tropopause over the equator ? (1) 40 km (2) 16 km (3) 11 km (4) 8 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 230 - ID 5014 Considering the North Atlantic region between 3CTN and 65*N and the adjacent land areas during mid-summer, the predominant pressure systems are (1) Azores high and weak low over NE Canada (2) Scandinavian high and Azores high (3) Azores low and Icelandic high (4) weak low over NE Canada and Scandinavian high ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 231 - ID 4163 If in a 100 m thick layer the temperature at the bottom of the layer is 10*C and at the top of the layer is 8*C then this layer is (1) neutral (2) absolutely unstable (3) absolutely stable (4) conditionally unstable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 232 - ID 4138 Freezing precipitation occurs (1) mainly in the form of freezing rain or freezing drizzle (2) only in the precipitation of a cold front

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(3) only in the precipitation of a warm front (4) mainly in the form of freezing hail or freezing snow ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 233 - ID 12854 Which statement is correct? (1) Fog and haze do not occur in the tropics. (2) Fog can be supercooled and can also contain ice crystals. (3) Mist and haze consist of water droplets. (4) Mist and haze only differ by different values of visibility. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 234 - ID 4043 Strongly developed cumulus clouds are an indication of (1) the presence of a low level inversion (2) poor surface visibility (3) instability in the atmosphere (4) the presence of warm air aloft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 235 - ID 13654 A stationary front is a front in which: (1) there is no difference in temperature between the two air masses. (2) there is no horizontal motion perpendicular to the front. (3) there are never frontal clouds. (4) there is no wind on both sides of the front. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 236 - ID 2173 During the winter months in mid-latitudes in the northern hemisphere, the polar front jet stream moves toward the (1) north and speed increases (2) north and speed decreases (3) south and speed decreases (4) south and speed increases ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 237 - ID 10883 For an airfield located in the British Isles, the passage of a warm front will usually be indicated by (1) a fall in temperature, rise in dew point temperature, wind backing and decreasing (2) rapid improvement in visibility, pressure falling rapidly, wind veering and increasing (3) rise in temperature, rise in dew point temperature, wind veers and decreases (4) rise in temperature, rapid rise in pressure, wind backs and becomes gusty ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 238 - ID 2565 At what degree of icing can ICAO's "No change of course and altitude necessary" recommendation be followed? (1) Light (2) Extreme (3) Moderate (4) Severe ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 239 - ID 13823 Which of the following statements is correct? (1) Normally atmospheric pressure stops falling rapidly behind a warm front, the air temperature rises. (2) At warm fronts thunderstorms are often observed. (3) Cumulus clouds and a good visibility are normally observed in a warm sector in autumn. (4) Cumulus clouds and a good visibility are normally observed in a warm sector in winter.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 240 - ID 130 At FL 180, the air temperature is -35*C.The air density at this level is: (1) Unable to be determined without knowing the QNH. (2) Equal to the density of the ISA at FL 180. (3) Greater than the density of the ISA at FL 180. (4) Less than the density of the ISA at FL 180. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 241 - ID 12798 Which of the following phenomena has to be mentioned in a SIGMET? (1) Heavy duststorm. (2) Thick fog. (3) Strong inversion. (4) Snow and ice on the runway. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 242 - ID 1363 What does the symbol indicate on a significant weather chart? (1) The center of a tropopause "high", where the tropopause is at FL400. (2) The upper limit of significant weather at FL400. (3) The center of a high pressure area at 400 hPa. (4) The lower limit of the tropopause.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 243 - ID 1271 What type of front / occlusion usually moves the fastest? (1) Cold occlusion. (2) Warm front. (3) Cold front. (4) Warm occlusion. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 244 - ID 10921 The ICAO Standard Atmosphere (ISA) assumes that temperature will reduce at the rate of (1) 1,98°C per 1000 FT up to 36090 FT after which it re mains constant to 65617 FT (2) 2°C per 1000 FT up to 36090 FT and will then inc rease at 0,3°C per 1000 FT up to 65617 FT (3) 1,98°C per 1000 FT up to 36090 FT and will then ri se at 0,3°C per 1000 FT up to 65617 FT when it will remain constant (4) 2°C per 1000 FT up to 65617 FT after which it wi ll remain constant to 104987 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 245 - ID 4024 The stability in a layer is increasing if (1) warm and moist air is adverted in the lower part (2) warm air is advected in the lower part and cold air in the upper part (3) warm air is advected in the upper part and cold air in the lower part

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(4) cold and dry air is advected in the upper part ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 246 - ID 3728 The dry adiabatic lapse rate has a value of (1) 2°C/1000FT (2) 0.5°C/100m (3) 0.65°C/100m (4) rc/ioom ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 247 - ID 13561 Which is true of Nairobi (Kenya)? (1) Apart from the wet season(s) it is cloud and rain free (2) In July it is frequently affected by clear skies and northerly winds from North Africa (3) There is one wet season (4) There are two wet seasons ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 248 - ID 13642 How is a ceiling defined? (1) Height above ground or water of the highest layer of cloud or obscuring phenomena aloft that covers 4 oktas or more of the sky. (2) Height above ground or water of the lowest layer of cloud below 20000 ft covering more than half of the sky. (3) Height above ground or water of the lowest layer of cloud that contributes to the overall overcast. (4) Height above ground or water of the lowest layer of cloud independent on the amount of clouds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 249 - ID 4266 The turbulence which occurs at high flight levels (above FL 250) is mainly of the type Clear Air Turbulence. In what way can moderate to severe Clear Air Turbulence affect an aircraft, the flight and the passengers? (1) The turbulence is a small scale one and can cause damage. The manoeuvring of the aircraft will be made more difficult or even impossible. For the passengers the flight will be unpleasant. (2) The turbulence can be resembled with the roughness of a washing-board (small scale) and will not have influence on the aircraft and its solidity, but will make flight a little more difficult. The passengers will seldom notice anything of this turbule (3) The turbulence is wave like which makes the flight unpleasant for the passengers but the manoeuvring will not be affected essentially. (4) The turbulence is a large scale one (waving) so that the aircraft will be difficult to manoeuvre. The passengers will feel some discomfort. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 250 - ID 4060 Wind is caused by (1) friction between the air and the ground (2) the rotation of the earth (3) the movements of fronts (4) horizontal pressure differences ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 251 - ID 13463 In which zone of a polar front jet stream is the strongest CAT to be expected ? (1) On the tropical air side of the core. (2) Exactly in the centre of the core. (3) About 12000 FT above the core. (4) On the polar air side of the core. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 252 - ID 2566 When will the surface wind in a METAR record a gust factor ? (1) When gusts are at least 10 knots above the mean wind speed (2) With gusts of at least 35 knots

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(3) With gusts of at least 25 knots (4) When gusts are at least 15 knots above the mean wind speed ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 253 - ID 233 What are squall lines? (1) Bands of intensive thunderstorms. (2) The paths of tropical revolving storms. (3) Unusual intensive cold fronts. (4) The surface weather associated with upper air troughs. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 254 - ID 2595 Which of these four METAR reports suggests that rain is most likely in the next few hours? (1) 34004KT9999 SCT040 SCT100 m05/m08 Q1014 NOSIG = (2) 23015KT 8000 BKN030 OVC070 17/14 01009 BECMG4000 = (3) 16002KT0100 FG SCT300 06/06 Q1022 BECMG 1000 = (4) 05016G33KT 8000 OVC015 08/06 Q1028 NOSIG = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 255 - ID 12865 What is the lowest visibility that may be expected during an approach into Dhahran at ETA 0600 UTC ? TAF OEDR 280000Z 280110 VRB08KT CAVOKBECMG 0103 7000 TEMPO 0410 28014G24KT4000 SA= (1) 4 km (2) 10 km or more (3) 7 km (4) 4000 yards ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 256 - ID 4075 Ahead of a warm front (northern hemisphere) the wind direction changes from the surface up to the tropopause. The effect of this change is that the wind (1) veers in the friction layer and veers above the friction layer (2) veers in the friction layer and backs above the friction layer (3) backs in the friction layer and backs above the friction layer (4) backs in the friction layer and veers above the friction layer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 257 - ID 1554 In which of the following circumstances is a SIGMET issued ? (1) Fog or a thunderstorm at an aerodrome. (2) A sudden change in the weather conditions contained in the METAR. (3) Clear ice on the runways of an aerodrome. (4) Severe mountain waves. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 258 - ID 12795 Which of the following phenomena should be described as precipitation at the time they are observed? (1) TS (2) SO (3) SA (4) DZ ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 259 - ID 12807 Which of the following phenomena has to be mentioned in a SIGMET? (1) Thick fog. (2) Volcanic ash.

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(3) Snow and ice on the runway. (4) Strong inversion. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 260 - ID 2336 In which environment is aircraft structural ice most likely to have the highest rate of accretion ? (1) Cirrus clouds. (2) Freezing rain. (3) Stratus clouds. (4) Snow. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 261 - ID 10393 In summer in the northern hemisphere the maximum wind speeds associated with sub-tropical jet streams are usually located (1) above the tropopause at about 100 hPa (2) above the tropopause at about 250 hPa (3) below the tropopause at about 300 hPa (4) below the tropopause at about 200 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 262 - ID 4068 Fair weather cumulus often is an indication of (1) smooth flying conditions below the cloud level (2) poor visibility at surface (3) a high risk of thunderstorms (4) turbulence at and below the cloud level ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 263 - ID 2524 After landing at an aerodrome (QNH 993 hPa) it is noticed that the altimeter is still set to 1013,2 hPa and that it reads 1200 feet. What is the elevation of the aerodrome above mean sea level ? (1) 1740 feet. (2) 2280 feet. (3) 1200 feet. (4) 660 feet. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 264 - ID 2523 An aircraft lands at an airport (airport elevation 540 FT, QNH 993 hPa) with the altimeter set to 1013 hPa. What will it indicate ? (1) 700 FT (2) OFT (3) 1080 FT (4) 380 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 265 - ID 13827 Which statement concerning the cold front and warm front of a frontal depression in the northern hemisphere is correct? (1) While occluding the warm front always becomes a front aloft. (2) The precipitation zone of the cold front is in general wider than the precipitation zone of the warm front. (3) The risk of fog is greater ahead of and behind the warm front than ahead of and behind the cold front. (4) The wind backs more at the warm front than at the cold front. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 266 - ID 1367 Refer to the diagram. Assuming the usual direction of movement, where will this polar frontal wave have moved ? (1) Position 3 (2) Position 4 (3) Position 2

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(4) Position 1

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 267 - ID 10878 During periods of undisturbed radiation weather, overland, the (1) angle between isobars and surface wind direction tends to be greatest in the mid afternoon (2) surface wind speed tends to be highest at night (3) wind tends to back from early morning until early afternoon (4) surface wind speed tends to be highest during the mid afternoon ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 268 - ID 1674 Over Madrid, what intensity of turbulence and icing is forecast at FL 200 ? (1) Severe turbulence, severe icing (2) Moderate turbulence, moderate icing (3) Severe turbulence, moderate icing (4) Moderate turbulence, light icing

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 269 - ID 2005 Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG W001 What does the "BECMG" data indicate for the 18 to 21 hour time frame? (1) The new conditions are achieved between 1800 and 2100 UTC (2) A quick change to new conditions between 1800 and 1900 UTC. (3) Many short term changes in the original weather. (4) Many long term changes in the original weather. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 270 - ID 1197 An outside air temperature of-35*C is measured while cruising at FL 200. What is the temperature deviation from the ISA at this level? (1) 10°C warmer than ISA. (2) 10°C colder than ISA. (3) 5°C colder than ISA. (4) 5°C warmer than ISA.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 271 - ID 13643 At FL 180, the air temperature is -35*C.The air density at this level is: (1) Unable to be determined without knowing the QNH. (2) Greater than the density of the ISA at FL 180. (3) Less than the density of the ISA at FL 180. (4) Equal to the density of the ISA at FL 180. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 272 - ID 233 When is the RVR reported at most airports? (1) When the RVR decreases below 2500 m. (2) When the visibility decreases below 2000 m. (3) When the RVR decreases below 2000 m. (4) When the visibility decreases below 1500 m. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 273 - ID 2558 Read this description: "After such a fine day, the ring around the moon was a bad sign yesterday evening for the weather today. And, sure enough, it is pouring down outside. The clouds are making an oppressively low ceiling of uniform grey; but at least it has become a little bit warmer." Which of these weather phenomena is being described? (1) A cold front (2) A blizzard (3) Weather at the back of a cold front (4) A warm front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 274 - ID 4061 During a descent from 2000 FT above the surface to the surface (no frontal passage, northern hemisphere), the wind normally (1) veers and increases (2) veers and decreases (3) backs and decreases (4) backs and increases ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 275 - ID 1582 At approximately what flight level is the subtropical jet stream found? (1) FL300 (2) FL400 (3) FL500 (4) FL200 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 276 - ID 1608 What is characteristic of the pamperos? (1) Foehn conditions in the Spanish Pyrenees (2) Katabatic winds in the Atlas Mountains (3) A marked advance of cold arctic air in North America (4) A marked advance of cold air in South America ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 277 - ID 2258 An aircraft is flying over the sea at FL 90; the true altitude is 9100 feet; local QNH is unknown. What assumption, if any, can be made about the air mass in which the aircraft is flying ? (1) It is warmer than ISA (2) There is insufficient information to make any assumption (3) It is colder than ISA

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(4) Its average temperature is the same as ISA ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 278 - ID 4052 What type of cloud is being described ? A generally grey cloud layer with fairly uniform base and uniform appearance, which may give drizzle or snow grains. When the sun is visible through the cloud, the outline is clearly discernible. Sometimes it appears in the form of ragged patches. (1) Nimbostratus (2) Stratus (3) Alto stratus (4) Cirro stratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 279 - ID 1628 Within a short interval, several flight crews report that they have experienced strong clear air turbulence in a certain airspace. What is the consequence of these reports? (1) The competent aviation weather office will issue a SPECI (2) The competent aviation weather office will issue a storm warning (3) The airspace in question, will be temporarily closed (4) The competent aviation weather office will issue a SIGMET ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 280 - ID 2541 Which of the following statements is true of the dew point of an air mass? (1) It can be used to estimate the air mass's relative humidity even if the air temperature is unknown (2) It can be used together with the air pressure to estimate the air mass's relative humidity (3) It can be higher than the temperature of the air mass (4) It can only be equal to, or lower, than the temperature of the air mass ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 281 - ID 4253 Hoar frost is most likely to form when (1) taking off from an airfield with a significant ground inversion (sky clear). (2) flying in supercooled drizzle. (3) flying inside convective clouds. (4) flying inside stratiform clouds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 282 - ID 10902 Maximum wind speeds associated with subtropical jet streams are usually located in the (1) polar air below the tropopause (2) tropical air below the tropopause (3) tropical air above the tropopause (4) polar air above the tropopause ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 283 - ID 1210 Which of the following changes of state is known as sublimation (in meteorology)? (1) Solid direct to liquid (2) Liquid direct to solid (3) Solid direct to vapour (4) Liquid direct to vapour ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 284 - ID 1993 Refer to the following TAF extract: BECMG 1821 2000 BR BKN004 BECMG 2124 0500 FG W001 What does the abbreviation "WOO!" mean? (1) Vertical visibility 100 FT. (2) RVR less than 100 m. (3) RVR greater than 100m.

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(4) Vertical visibility 100 m. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 285 - ID 13602 Tropical revolving storms are NOT formed in: (1) South Atlantic Ocean. (2) Gulf of Bengal. (3) South Indian Ocean. (4) waters around the Philippines. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 286 - ID 1615 What weather conditions would you expect at a squall line? (1) Strong whirlwinds reaching up to higher levels (2) Continuous heavy rain (3) Fog (4) Thunderstorms ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 287 - ID 5540 What type of clouds are associated with rain showers ? (1) Towering cumulus and cumulonimbus. (2) Towering cumulus and altostratus. (3) Nimbostratus. (4) Altostratus and stratus. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 288 - ID 1602 When do cold occlusions occur most frequently in Europe? (1) Autumn and winter (2) Winter and spring (3) Summer (4) Winter ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 289 - ID 2553 With what type of cloud is "GR" precipitation most commonly associated? (1) AS (2) CB (3) cc (4) ST ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 290 - ID 3723 The height and the temperature of the tropopause are respectively in the order of (1) 8 km and -4CTC over the equator (2) 16 km and -4CTC over the poles (3) 8 km and - 75*C over the poles (4) 16 km and -75*C over the equator ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 291 - ID 12791 Which of the following statements about lightnings and lightning strikes is correct? (1) Compasses and electronics are always affected (2) Spherical lightnings often penetrate into aircraft (3) Lightning strikes always cause heavy damage (4) The aircraft is temporarily part of the lightning trajectory ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 292 - ID 1697 Flight Munich to London. What is the direction and maximum speed of the jet stream affecting the route between Munich and London ? (1) 050°/120kt (2) 050°/120km/h (3) 230°/120m/sec (4) 220°/120kt

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 293 - ID 2571 Which constant pressure altitude chart is standard for FL 180? (1) 200 hPa (2) 300 hPa (3) 700 hPa (4) 500 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 294 - ID 2555 Which of the following cloud types is least likely to produce precipitation ? (1) NS (2) AS (3) CI

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(4) CB ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 295 - ID 2248 If the QFE at Locarno (200 metres above sea level) is 1000 hPa, what is the approximate ONH? (1) 990 hPa (2) 1035 hPa (3) 1025 hPa (4) 985 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 296 - ID 1213 Which form of precipitation from clouds containing only water is most likely to fall in mid-latitudes? (1) Heavy rain with large drops. (2) Drizzle. (3) Hail. (4) Moderate rain with large drops. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 297 - ID 13696 In which of these cloud types can icing be virtually ruled out? (1) AS (2) cs (3) NS (4) sc ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 298 - ID 1611 From which direction do the trade winds blow, in the southern hemisphere? (1) NE (2) N (3) SE (4) sw ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 299 - ID 1585 How are high level condensation trails formed that are to be found occasionally behind jet aircraft ? (1) In conditions of low humidity, through the particles of soot contained in the exhaust gases (2) Through a decrease in pressure, and the associated adiabatic drop in temperature at the wing tips while flying through relatively warm but humid air (3) Through water vapour released during fuel combustion (4) Only through unburntfuel in the exhaust gases ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 300 - ID 1263 What type of fronts are most likely to be present during the winter in Central Europe when temperatures close to the ground are below CTC, and freezing rain starts to fall? (1) Cold occlusions. (2) Cold fronts. (3) High level cold fronts. (4) Warm fronts, warm occlusions. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 301 - ID 2602 Which of the following statements is an interpretation of the METAR ? 25020G38KT 1200 +TSGR BKN006 BKN015CB 23/18 Q1016 BECMG NSW = (1) Wind 250°, thunderstorm with moderate hail, QNH 1 016 hPa (2) Mean wind speed 20-38 knots, visibility 1200 metres, temperature 23*C

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(3) Gusts of 38 knots, thunderstorm with heavy hail, dew point 18*C (4) Broken, cloud base 600 feet and 1500 feet, temperature 18°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 302 - ID 241 In which meteorological forecast chart is information about CAT regions found? (1) 24 hour surface forecast. (2) 300 hPa chart. (3) 500 hPa chart. (4) Significant weather chart. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 303 - ID 13808 The following sequence of clouds is observed at an airport: cirrus, cirrostratus, altostratus, nimbostratus. This is typical for: (1) the passage of a cold front. (2) the passage of a squall line. (3) the passage of a warm front. (4) anticyclonic weather. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 304 - ID 1983 In which zone of a polar front jet stream is the strongest CAT to be expected ? (1) On the polar air side of the core. (2) Exactly in the centre of the core. (3) About 12000 FT above the core. (4) On the tropical air side of the core. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 305 - ID 4179 The validity of a TAF is (1) 9 hours from the time of issue (2) 2 hours (3) between 6 and 9 hours (4) stated in the TAF ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 306 - ID 3725 An isothermal layer is a layer of air in which the temperature (1) increases with height at a constant rate (2) decreases with height at a constant rate (3) increases with height (4) remains constant with height ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 307 - ID 2257 During a flight over the sea at FL 135, the true altitude is 13500 feet; local QNH is 1019 hPa. What information, if any, can be gained about the air mass in which the aircraft is flying? (1) It is warmer than ISA (2) Its average temperature is the same as ISA (3) It is colder than ISA (4) There is insufficient information to make any assumption ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 308 - ID 1196 Which constant pressure altitude chart is standard for FL50? (1) 500 hPa. (2) 700 hPa. (3) 850 hPa.

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(4) 300 hPa. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 309 - ID 2000 A zone of strong convection currents is encountered during a flight. In spite of moderate gust you decide to continue the flight. What are your precautionary measures? (1) Decrease the speed /try to climb above the zone of convective currents if aircraft performance parameters allow. (2) Decrease the speed /try to descend below the zone of convective currents. (3) Increase the speed /try to climb above the zone of convective currents if aircraft performance parameters allow. (4) Increase the speed /try to descend below the zone of convective currents. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 310 - ID 2711 The attached chart shows the weather conditions on the ground at 1200 UTC on October 10. Which of the following reports reflects weather development at Zurich Airport? (1) TAF LSZH 101601 32008KT 9999 SCT030TCU TEMPO 2201 32020G32KT 3000 TSRA BKN020CB = (2) TAF LSZH 101601 VRB02KT8000 SCT280 BECMG 1618 00000KT3500 MIFG BECMG 1820 1500 BCFG BECMG 2022 0100 FG W001 = (3) TAF LSZH 101601 23012KT 6000 RABKN012 OVC030 TEMPO 2023 22025G40KT 1600 +SNRABKN003 OVC015 = (4) TAF LSZH 101601 05020G35KT 8000 BKN015TEMPO 1720 05018KT 0300 +SHSN W002 =

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 311 - ID 2546 A plain in Western Europe with an average height of 500 m (1600 FT) above sea level is covered with a uniform SC layer of cloud during the summer months. At what height above the ground is the base of this cloud to be expected? (1) 7000 -15000 FT above ground (2) 1500 - 7000 FT above ground (3) 100 -1500 FT above ground (4) 15000 - 25000 FT above ground ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 312 - ID 2247 If the QFE at Locarno (200 metres above sea level) is 980 hPa, what is the approximate QNH ? (1) 1005 hPa (2) 1015 hPa (3) 1000 hPa (4) 1010 hPa ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 313 - ID 1676 Over Paris at what flight level would you expect to find the tropopause according to the map? (1) FL280 (2) FL330 (3) FL150 (4) FL300

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 314 - ID 14262 When in the northern hemisphere at the same latitude the distance between isobars is equal then; (1) the wind around a low pressure area is stronger than around a high pressure area; (2) the geostrophic wind speed is less than the gradient wind speed in a low pressure area; (3) the gradient wind in a low pressure area is weaker than in a high pressure area; (4) the coriolis force in a high pressure area is smaller than the gradient force in a high pressure area; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 315 - ID 4111 What feature is normally associated with the initial stage of a thunderstorm?

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(1) Frequent lightning (2) Rain or hail at the surface (3) Continuous updraft (4) Roll cloud ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 316 - ID 13597 What does the code TAF AMD mean? (1) No change compared with the previous TAF. (2) Revised TAF. (3) Delayed issue of a TAF. (4) Weather conditions expected to affect the safety of normal operations. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 317 - ID 1215 Which of the following is a cause of stratus forming over flat land? (1) Convection during the day. (2) Unstable air. (3) Radiation during the night from the earth surface in moderate wind. (4) The release of latent heat. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 318 - ID 1267 The approximate inclined plane of a warm front is: (1) 1/300 (2) 1/50 (3) 1/150 (4) 1/500 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 319 - ID 10853 Advection fog is most likely to form when (1) a mild moist airstream flows over snow covered ground and the wind speed is less than 10 kt (2) cold maritime airflows over a warmer surface and the wind speed is greater than 15 kt (3) warm maritime airflows over a relatively warmer surface and the wind speed is greater than 15 kt (4) cold air is forced over higher ground and further adiabatic cooling occurs ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 320 - ID 450 Examining the pictures, on which one of the tracks (dashed lines) is this cross-section to be expected? (1) Track B-C (2) Track A-D (3) Track A-E (4) Track B-D

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 321 - ID 2518 An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013,2 hPa. Which of these statements is correct? (1) Wind speed at Madrid is higher than at A (2) The true altitude will be higher at A than at B (3) Wind speed at B is higher than at A (4) The true altitude will be higher at B than at A

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 322 - ID 4034 A sample of moist but unsaturated air may become saturated by (1) lowering the pressure, keeping temperature constant (2) compressing it adiabatically (3) expanding it adiabatically (4) raising the temperature ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 323 - ID 4058 In the northern hemisphere a pilot flying at 1000 FT/AGL directly towards the centre of a low pressure area, will find the wind blowing from (1) directly ahead (2) left and behind (3) right and behind (4) about 45 degrees to the right of directly ahead ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 324 - ID 10938 What type of precipitation might occur at 1700 UTC? MKJP 160430Z 160606 36010KT 9999 FEW025 BECMG 1315 14020G34KTFEW015CB SCT025 PROB30 TEMPO 1720 6000 +SHRASCT010 BKN015CB BECMG 2224 34010KTFEW025= (1) Intermittent light rain (2) Continuous moderate rain (3) Light drizzle (4) Heavy rain showers ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 325 - ID 4193 The troposphere (1) has a greater vertical extent above the equator than above the poles (2) contains all oxygen of the stratosphere (3) reaches the same height at all latitudes (4) is the separation layer between the stratosphere and atmosphere ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 326 - ID 4085 An observer on the northern hemisphere is under influence of the wind system of a depression, which is moving from West to East. The centre of the depression passes to the South of the observer. For this observer the wind direction is (1) initially backing, then veering

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(2) initially veering, then backing (3) continuously veering (4) continuously backing ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 327 - ID 12818 What type of weather can usually be expected in a polar maritime air mass over central Europe in the daytime during summer? (1) Sky clear. (2) Showers and good visibility. (3) Drizzle and low stratus. (4) Continuous rain and poor visibility. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 328 - ID 2712 You have been flying for some time in dense layered cloud. The outside air temperature is -25*C. Which of the following statements is true? (1) Severe airframe icing is quite likely under these conditions (2) In a dense layered cloud icing is unlikely also at an outside air temperature of-5*C (3) Severe airframe icing is unlikely under these conditions (4) If you do not have weather radar on board there is no need to worry, as CB is unlikely to form in such cloud ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 329 - ID 1994 What is the main energy source of a tropical revolving storm? (1) Temperature difference between equatorial low pressure trough and subtropical high pressure belt. (2) Cold air advancing from temperate latitudes. (3) Latent heat released from condensing water vapour. (4) The equatorial jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 330 - ID 1248 What is the most likely temperature at the tropical tropopause? (1) -25°C. (2) -35°C. (3) -55°C. (4) -75°C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 331 - ID 1702 To what extent is Munich covered by clouds ? (1) 5 to 7 oktas (2) 1 to 4 oktas (3) 3 to 5 oktas (4) 5 to 8 oktas

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 332 - ID 2501 A temperature of +15°C is recorded at an altitude of 5 00 metres above sea level. If the vertical temperature gradient is that of a standard atmosphere, what will the temperature be at the summit of a mountain, 2500 metres above sea level? (1) -2°C (2) +4°C (3) +2°C (4) o°c ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 333 - ID 4041 The most effective way to dissipate cloud is by (1) convection (2) a decrease in pressure (3) subsidence (4) a decrease in temperature ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 334 - ID 10863

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An aircraft maintains a constant indicated altitude of 7500 FT from A (270 FT/AMSL- QNH 1021 hPa) to B (1650 FT/AMSL- QNH 983 hPa). Assuming that the altimeter sub-scale setting remains unchanged at 1021 hPa, the actual height of the aircraft above the surface at B will be (1) 4824 FT (2) 6474 FT (3) 6876 FT (4) 6204 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 335 - ID 4999 For the same pressure gradient at 6CTN, 5CTN and 4CTN the speed of the geostrophic wind will be (1) greatest at 40°N (2) the same at all latitudes (3) least at 50°N (4) greatest at 60°N ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 336 - ID 13600 What are the characteristics of rime ice, and what conditions are most favourable for its formation? (1) Smooth appearance and builds forward from leading surfaces into a sharp edge. Most common in cumuliform clouds at temperatures of-20°C to -25°C. (2) Transparent appearance and tendency to take the shape of the surface on which it freezes. Stratiform clouds and temperatures only slightly below freezing promote its formation. (3) Milky granular appearance, forming on leading edges and accumulating forward into the air stream. Stratiform clouds at temperatures of -1CTC to -2CTC are most conducive to its formation. (4) Opaque rough appearance, tending to spread back over an aircraft surface. Most frequently encountered in cumuliform clouds at temperatures slightly below freezing. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 337 - ID 2177 If you have to fly through a warm front when freezing level is at 10000 feet in the warm air and at 2000 feet in the cold air, at which altitude is the probability of freezing rain the lowest ? (1) 3000 feet (2) 12000 feet (3) 9000 feet (4) 5000 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 338 - ID 4997 The value of the saturated adiabatic lapse rate is closest to that of the dry adiabatic lapse rate in (1) freezing fog (2) cirrus (3) cumulus (4) stratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 339 - ID 4073 The geostrophic wind depends on (1) centripetal force, height, pressure gradient (2) geographic latitude, centripetal force, height (3) density, earth's rotation, geographic latitude (4) earth's rotation, geographic latitude, centripetal force ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 340 - ID 1768 The following weather message EDDM 241200Z 241322 VRB03KT 1500 BR OVC004 BECMG 1517 00000KT0500 FGW002 TEMPO 2022 0400 FGW001 is a: (1) 24hourTAF. (2) SPECI.

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(3) 9hourTAF. (4) METAR. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 341 - ID 10346 A METAR message is valid (1) at the time of observation (2) for 9 hours (3) for the hour following the observation (4) for 2 hours ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 342 - ID 1781 The easterly jet is a jet stream that occurs: (1) only in the summer of the northern hemisphere at approx. 45 000 FT (2) during the whole year in the northern hemisphere (3) during the whole year in the southern hemisphere (4) only in the winter of the northern hemisphere at approx. 30 000 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 343 - ID 2536 If Paris reports a wind of 16020KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground? (1) 19040KT (2) 14020KT (3) 16030KT (4) 17015KT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 344 - ID 5005 Considering Melbourne (C) in July, the weather is predominantly influenced by the zone of (1) equatorial low pressure due to the proximity of the intertropical convergence zone over central Australia (2) Antarctic high pressure due to the absence of any protective land mass between south Australia and Antarctica (3) subtropical high pressure, with the occasional passage of fronts originating in the adjacent zone of westerly waves (4) disturbed temperate low pressure, bringing an almost continuous succession of fronts resulting in strong winds, low cloud and rain

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 345 - ID 4150 On a clear summer day, turbulence caused by solar heating is most pronounced (1) during the early afternoon (2) immediately after sunset (3) about midmorning (4) during early morning hours before sunrise ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 346 - ID 10929 The TAF weather messages are (1) airport forecasts (2) hourly or semi-hourly weather observations (3) landing forecasts of the "trend" type (4) special weather observations ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 347 - ID 10917 The formation of clear ice on the leading edges of an aircraft is most likely to be caused by the (1) instantaneous freezing of large supercooled water droplets and snow crystals (2) relatively slow freezing of large supercooled water droplets (3) instantaneous freezing of small supercooled water droplets (4) relatively slow freezing of small supercooled water droplets and ice crystals ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 348 - ID 10858 An aircraft flying at FL45 (OAT 6°C) obtains a reading of 1860 ft on its radio altimeter (ground elevation 3090 ft). What is the value of the QNH, to the nearest hPa, at that point? (1) 996 (2) 1013 (3) 1030 (4) 1042 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 349 - ID 10390 If the QFE, QNH and QFF of an airport have the same value, (1) the airport must be at MSL (2) the 1013.25 hPa level must be at MSL (3) the conditions must be as in the ISA (4) the airport must be at MSL and the conditions must be as in the ISA ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 350 - ID 3726 An inversion is a layer of air which is (1) conditionally stable (2) conditionally unstable (3) absolutely unstable (4) absolutely stable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 351 - ID 1776 What is the meaning of the abbreviation "SCT" ? (1) 5-7 oktas (2) 3 - 4 oktas (3) 1 - 2 oktas (4) 1 - 4 oktas ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 352 - ID 13633 If radiation fog forms on a clear night with light winds, the increase in wind speed from 5 ktto 13 kt will most likely (1) cause the fog to lift and become low stratus. (2) change the radiation fog to advection fog. (3) disperse the fog immediately. (4) have no effect. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 353 - ID 2046 What is normally the most effective measure to reduce or avoid CAT effects? (1) Decrease of speed. (2) Change of flight level. (3) Change of course. (4) Increase of speed. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 354 - ID 4129

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Supercooled droplets can be encountered (1) only in winter above 10000 FT (2) at any time of the year (3) in winter only in high clouds (4) only in winter at high altitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 355 - ID 13812 The average slope of a cold front is in the order of: (1) 1:80 (2) 1:500 (3) 1:800 (4) 1:10 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 356 - ID 1101 The isobars drawn on a surface weather chart represent lines of equal pressure (1) at height of observatory (2) at a determined density altitude (3) at flight level (4) reduced to sea level ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 357 - ID 1765 8/8 stratus base 200 FT/AGL is observed at sunrise at an aerodrome in the north of France; the QNH is 1028 hPa and there is a variable wind of 3 kt. What change in these clouds is likely at 1200 UTC in summer and winter? (1) Winter: OVC, base 500 FT/AGL; summer: SCT, base 3000 FT/AGL. (2) Winter: BKN, base 2500 FT/AGL; summer: BKN, base 3500 FT/AGL. (3) Winter: clear sky; summer: BKN CB, base 1500 FT/AGL. (4) Winter: SCT, base 3000 FT/AGL; summer: OVC, base 500 FT/AGL. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 358 - ID 4264 What is the type, intensity and seasonal variation of precipitation in the equatorial region ? (1) Precipitation is generally in the form of showers but continuous rain occurs also. The greatest intensity is in July. (2) Warm fronts are common with continuous rain. The frequency is the same throughout the year (3) Showers of rain or hail occur throughout the year; the frequency is highest in January. (4) Rainshowers, hail showers and thunderstorms occur the whole year, but frequency is highest during two periods: April-May and October-November. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 359 - ID 5015 Considering the North Atlantic region between 30*N and 65*N together with the adjacent land areas during winter, the normal disposition of the main anticyclones at the surface is (1) Greenland, Iberian peninsula (2) Siberia, Iceland, Canaries (3) Azores, Siberia (4) NE Canada, Iceland ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 360 - ID 1567 A wind speed of 350 kt within a jet stream core should be world-wide regarded as: (1) possible but a very rare phenomenon. (2) a common occurrence. (3) not unusual in polar regions. (4) not possible. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 361 - ID 1095 What types of cloud will you meet flying towards a warm front ? (1) At some 500 km from the front, groups of CB, later at some 250 km thickening AS (2) At some 800 km CS, later AS, and at some 300 km NS until the front (3) Extensive areas of fog. At some 100 km from the front NS begin (4) At some 500 km AS, later CS and at some 80 km before the front CB ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 362 - ID 12796 Which of the following phenomena should be described as precipitation at the time they are observed? (1) +SHSN (2) MIFG (3) VA (4) BR ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 363 - ID 1198 Convective activity over land in mid-latitudes is greatest in (1) summer in the afternoon. (2) winter in the afternoon. (3) winter during the night and early morning. (4) summer during the night and early morning. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 364 - ID 1995 Which of the following meteorological phenomenon indicates upper level instability which may lead to thunderstorm development ? (1) Red cirrus. (2) AC castellanus. (3) Halo. (4) AC lenticularis. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 365 - ID 4056 The greater the pressure gradient the (1) closer the isobars and the stronger the wind (2) closer the isobars and the lower the temperatures (3) further the isobars will be apart and the weaker the wind (4) further the isobars will be apart and the higher the temperature ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 366 - ID 1584 In which of the following changes of state is latent heat released ? (1) Liquid to gas (2) Gas to liquid (3) Solid to gas (4) Solid to liquid ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 367 - ID 10967 Which of the following statements is correct? (1) The Bergeron-Findeisen process is mainly based on the difference of maximum vapour pressure over water and over ice of the same temperature (2) The principle of the Bergeron-Findeisen process is mainly based on the difference in size of the cloud elements (3) At mid-latitudes the coalescense process is usually the initial process in the formation of precipitation (4) In the tropics stratiform precipitation does not occur ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 368 - ID 4054

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The presence of altocumulus lenticularis is an indication of the (1) presence of mountain waves (2) presence of valley winds (3) risk of orographic thunderstorms (4) development of thermal lows ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 369 - ID 12823 You are flying over the sea at FL 250 and measure an outside temperature of-50*C. The pressure at sea level is 1023 hPa. What is your approximate true altitude calculated using normal vertical change in temperature with increase in height? (1) 26770 FT/AMSL. (2) 26230 FT/AMSL. (3) 23230 FT/AMSL. (4) 23770 FT/AMSL. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 370 - ID 2606 Compare the following TAF and VOLMET reports for Nice: TAF 240600Z 240716 VRB02KT CAVOK = 0920Z 13012KT 8000 SCT040CB BKN100 20/18 Q1015 TEMPO TS = What can be concluded from the differences between the two reports ? (1) That the weather in Nice after 0920 is also likely to be as predicted in the TAF (2) That the weather conditions at 0920 were actually predicted in the TAF (3) That the VOLMET speaker has got his locations mixed up, because there is no way the latest VOLMET report could be so different from the TAF (4) That the weather at Nice is clearly more volatile than the TAF could have predicted earlier in the morning ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 371 - ID 5033 The process by which water vapour is transformed directly into ice is known as (1) radiation cooling (2) sublimation (3) supercooling (4) supers atu ration ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 372 - ID 1579 At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude? (1) At a temperature greater than or equal to that of the ISA and where the QNH is greater than or equal to 1013.25 hPa (2) In a very cold area with a QNH of 1015 hPa (3) At a temperature less than or equal to that of the ISA and where the QNH is less than 1013.25 hPa (4) In a cold low pressure region ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 373 - ID 3729 The dry adiabatic lapse rate (1) has a variable value (2) is greater in summer than in winter (3) has a constant fixed value (4) is greater during the night than during the day ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 374 - ID 13558 During summer, the cloud type most applicable to square 2A is (1) CB (2) cs (3) ST (4) AC

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 375 - ID 5534 Around Paris on January 3rd at 1800 UTC, the surface temperature, under shelter, is 3*C. The sky is covered by 8 oktas of stratus. QNH is 1033 hPa. If the sky is covered all night, the minimum temperature of the night of January 3rd to January 4th should be (1) slightly below+3°C. (2) slightly above+3°C. (3) significantly below 0*C. (4) significantly above +3°C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 376 - ID 2715 Thunderstorms in exceptional circumstances can occur in a warm front if (1) the cold air is stable. (2) the warm air is unstable. (3) the cold air is unstable. (4) the warm air is stable. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 377 - ID 4035 Precipitation in the form of showers occurs from (1) stratified clouds (2) cirro-type clouds (3) convective clouds (4) clouds containing only ice crystals ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 378 - ID 4112 Large hail stones (1) are entirely composed of clear ice (2) only occur in frontal thunderstorms

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(3) only occur in thunderstorms of mid-latitudes (4) are typically associated with severe thunderstorms ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 379 - ID 13639 Frontal fog can be formed by (1) condensation of air saturated by evaporation of precipitation (2) condensation of air saturated by adiabatic cooling (3) evaporation of moisture at the surface (4) cooling at night ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 380 - ID 2580 Which of the following best describes Zone A? (1) Col (2) Trough of low pressure (3) Ridge of high pressure (4) Depression

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 381 - ID 1096 A frontal depression passes through the airport. What form of precipitation do you expect ? (1) Showers during some 2 hours until the warm front arrives. Drizzle in the warm sector within 12 hours. Rain or snow on the passage of the cold front. (2) Continuous rain or snow during 6 hours until the warm front arrives. The precipitation stops for several hours within the warm sector. On the arrival of the cold front, showers within a couple of hours. (3) Continuous rain or snow while the frontal wave passes for a period of some 24 hours. (4) Rain or snow during about 12 hours until the warm front arrives. Within the warm sector the rain increases. Improvement on the passage of the cold front. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 382 - ID 2592 Which of the following phenomena should be described as precipitation at the time they are observed?

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(1) SO; (2) DZ; (3) SA; (4) TS; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 383 - ID 12802 Where does wind shear occur? (1) Wind shear of any significance occurs only in connection with jetstreams. (2) Wind shear occurs primarily at lower altitudes in the vicinity of mountain waves. (3) At any level in the atmosphere if associated with either a change of wind direction and/or wind speed. (4) Wind shear occurs only when there is a strong temperature inversion, or when the Jetstream is associated with a strong depression. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 384 - ID 13813 The average position of the polar front in the northern hemisphere is: (1) more southerly during the summer than during the winter. (2) located near 65*N during the whole year. (3) located near 55*N during the whole year. (4) more southerly during the winter than during the summer. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 385 - ID 41 ATIS information contains (1) meteorological and operational information (2) only meteorological information (3) operational information and if necessary meteorological information (4) only operational information ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 386 - ID 1623 What does the abbreviation "nosig" mean? (1) Not signed by the meteorologist (2) No report received (3) No weather related problems (4) No significant changes ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 387 - ID 10941 What is a downburst? (1) A concentrated downdraft with high speeds and a higher temperature than the surrounding air. (2) An extremely strong wind gust in a tropical revolving storm. (3) A small low pressure system where the wind circulates with very high speeds. (4) A concentrated downdraft with high speeds and a lower temperature than the surrounding air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 388 - ID 2252 If you are flying at FL 100 in an air mass that is 10*C warmer than a standard atmosphere, what is the outside temperature likely to be? (1) +15°C (2) -15°C (3) +5°C (4) -10°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 389 - ID 2522 You are planning to fly across a mountain range. The chart recommends a minimum altitude of 12000 feet above mean sea level. The air mass you will be flying through is an average 10*C warmer than ISA. Your altimeter is set to 1023 hPa (ONH of a nearby airport at nearly sea level). What altitude will the altimeter show when you have reached the recommended minimum altitude?;

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(1) 11520 feet (2) 12210 feet (3) 11250 feet (4) 11790 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 390 - ID 1224 Which one of the following types of cloud is most likely to produce heavy precipitation ? (1) NS. (2) cs. (3) ST. (4) sc. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 391 - ID 3724 An inversion is a layer of air in which the temperature (1) remains constant with height (2) increases with height (3) decreases with height less than 1 °C/100m (4) decreases with height more than 1°C/100m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 392 - ID 2569 Which of the following causes echoes on meteorological radar screens? (1) Water vapour (2) Hail (3) Any cloud (4) Fog ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 393 - ID 2531 Between which latitudes are you most likely to find the subtropical high-pressure belt ? (1) 25°-35°. (2) 55°-75°. (3) 35°-55°. (4) 10°-15°. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 394 - ID 2502 How would you characterise an air temperature of-15*C at the 700 hPa level over western Europe? (1) Low (2) High (3) 20°C below standard (4) Within +/-5°C of ISA ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 395 - ID 10892 In a mountainous area, the most hazardous flying conditions associated with standing waves are likely to be experienced (1) just above the lenticular cloud on the windward side (2) on the windward side of the mountain just above the "cap" cloud (3) in the vicinity of the "roll" cloud or rotor zone beneath the first wave on the leeward side (4) between the troughs of the waves particularly 30 NM to 50 NM downwind and close to the tropopause ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 396 - ID 10882 For a VFR aircraft, the conditions in which it could encounter severe airframe icing are: (1) flight into freezing rain, resulting in clear ice formation (2) flight into an area outside of clouds where the temperature is below CTC, resulting in rime ice formation

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(3) flight between two cloud layers, without precipitation, resulting in clear ice formation (4) flight into supercooled rain, resulting in rime ice formation ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 397 - ID 1581 Which jet stream is connected with a surface front system? (1) The equatorial jet stream (2) The polar front jet stream (3) The subtropical jet stream (4) The easterly jet stream ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 398 - ID 4141 If the surface temperature is 15*C „ then the temperature at 10000 FT in a current of ascending unsaturated air is: (1) 5°C (2) -5°C (3) o°c (4) -15°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 399 - ID 1606 On which coast of North America, is the danger of tropical revolving storms the greatest? (1) SE coast (2) NE coast (3) N coast (4) W coast ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 400 - ID 5538 Relative humidity at a given temperature is the relation between (1) dew point and air temperature (2) water vapour weight and dry air weight (3) actual water vapour content and saturated water vapour content (4) water vapour weight and humid air volume ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 401 - ID 10953 When and where is an easterly jet stream likely to be encountered ? (1) In summer from south-east Asia extending over southern India to central Africa. (2) In summer from the Middle East extending over the southern part of the Mediterranean to southern Spain. (3) In winter along the Russian coast facing the Arctic ocean. (4) Throughout the year to the south of the Azorian high. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 402 - ID 3722 The average height of the tropopause at 5CTN is about (1) 8 km (2) 11 km (3) 14 km (4) 16 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 403 - ID 13591 For an aircraft at FL40, approaching the front (square 3C) from the direction of square 3D a potential hazard exists before reaching the front in the form of (1) severe turbulence associated with CB (2) severe downdrafts from subsiding air (3) severe turbulence and wind shear

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(4) clear ice accretion to the airframe

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 404 - ID 4119 Thunderstorms can occur on a warm front if the (1) warm air is moist and the environmental lapse rate is less than the saturated adiabatic lapse rate (2) cold air is moist and the environmental lapse rate is less than the dry adiabatic lapse rate (3) cold air is moist and the environmental lapse rate exceeds the saturated adiabatic lapse rate (4) warm air is moist and the environmental lapse rate exceeds the saturated adiabatic lapse rate ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 405 - ID 1605 What is the most likely cause of a lack of clouds at higher levels in a stationary high? (1) Rising air (2) Sinking air (3) Instability (4) Divergence at higher levels ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 406 - ID 2253 If you are flying at FL 120 and the outside temperature is -2*C, at what altitude will the "freezing level" be? (1) FL90 (2) FL 110 (3) FL150 (4) FL130 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 407 - ID 5036 Which is true of a typical non frontal thermal depression? (1) It forms over land in summer (2) It forms over the ocean in summer (3) It forms over the ocean in winter (4) It forms over land in winter ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 408 - ID 13820 Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"?

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(1) 27019G37KT 9999 BKN050 18/14 Q1016 NOSIG = (2) 00000KT 0100 FG W001 11/11 01025 BECMG 0500 = (3) 26012KT8000SHRABKN025 16/12O1018NOSIG = (4) 34004KT7000 MIFG SCT260 09/08 Q1029 BECMG 1600 = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 409 - ID 10949 What surface wind is forecast for ETA 1700 UTC at Kingston? MKJP 160430Z 160606 36010KT 9999 FEW025CB BECMG1315 14020G34KT FEW015CB SCT025 PROB30 TEMPO 1720 6000 +SHRASCT010 BKN015CB BECMG 2301 34010KTFEW025= (1) 140°/20 kt gusts 34 kt (2) 360°/10kt (3) 340°/10kt (4) 140°/27kt ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 410 - ID 2539 An aircraft is approaching under visual flight rules an airfield whose runway is parallel to the coast. When downwind over the sea, the airfield is on the right. What wind effect should be anticipated on final approach and landing during a sunny afternoon? (1) Crosswind from the left (2) Headwind (3) Crosswind from the right (4) Tailwind ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 411 - ID 12789 Which of the following layers of fog above land is coded as MIFG? (1) A layer of 20 feet deep. (2) A layer of 15 feet deep. (3) A layer of 10 feet deep. (4) A layer of 5 feet deep. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 412 - ID 13592 For an aircraft at FL 80, ahead of the front in square 2D, the expected flight conditions are (1) below AS type cloud, generally smooth air with light precipitation (2) IMC in cumuliform cloud, moderate turbulence with a risk of rime icing (3) overcast skies, moderate to heavy turbulence with the possibility of thunderstorms (4) high CI and CStype cloud, light turbulence and poor visibility

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 413 - ID 2514 During the climb after take-off„ the altimeter setting is adjusted at the transition altitude. If the local ONH is 1023 hPa, what will happen to the altimeter reading during the resetting procedure ? (1) It will increase (2) It will decrease (3) It will remain the same (4) It is not possible to give a definitive answer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 414 - ID 10959 Which area of a polar front jet stream in the northern hemisphere has the highest probability of turbulence? (1) Above the core in the boundary between warm and cold air. (2) In the core of the jet stream. (3) Looking downstream, the area to the left of the core. (4) Looking downstream, the area to the right of the core. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 415 - ID 4134 The following temperatures have been observed over a station at 1200 UTC. Assume the station is at MSL. Height in feet. Temperature in degrees C. 20000.-12 18000.-11 16000.-10 14000.-10 12000.-6 10000.-2 8000.+2 6000.+6 4000.+12 2000.+15 surface+15. Which of the following statements is correct ? (1) The height of the freezing level over the station is approximately 12000 FT. (2) The temperature at 10000 FT is in agreement with the temperature in the International Standard Atmosphere. (3) Assuming that the MSL pressure is 1013.25 hPa the true altitude of an aircraft would actually be higher than the indicated altitude. (4) The layer between 16000 and 18000 FT is absolutely unstable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 416 - ID 5019 The arrows labelled "s" represent the mean tracks of tropical revolving storms which occur mainly from (1) May to November and are called cyclones (2) December to April and are called cyclones (3) May to November and are called hurricanes (4) December to April and are called typhoons

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 417 - ID 4104 An easterly wave is a (1) wave-like disturbance in the monsoon regime of India, moving from east to west, with severe convective activity ahead of its trough (2) disturbance in the higher levels associated with the equatorial easterly jet, moving from east to west, with severe convective activity in rear of its trough (3) small scale wave disturbance in the tropics, moving from east to west, with severe convective activity ahead of its trough (4) wave in a trade wind belt, moving from east to west, with severe convective activity in rear of its trough ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 418 - ID 10893 In addition to a stable layer of air over a substantial mountain range, the conditions most favourable to the development of standing waves are (1) steep dry adiabatic lapse rate, wind speed increasing and changing direction rapidly with increase in height (2) wind speed excess of 20 kt at the surface and increasing with height, wind direction perpendicular to the general direction of the range (3) significant moisture loss due to precipitation, rapid lowering of the tropopause in the area of the mountain range (4) conditional instability, wind speed constant from a direction parallel to the mountain range

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 419 - ID 10399 In the lower levels of the atmosphere when the environmental lapse rate is greater than saturated adiabatic lapse rate but less than dry adiabatic lapse rate - the air mass is described as being (1) conditionally unstable (2) absolutely unstable (3) unstable (4) stable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 420 - ID 2610 Select from the map the average wind for the route Zurich - Rome at FL110. (1) 200/30 (2) 040/10 (3) 250/20 (4) 230/10

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 421 - ID 133 In the troposphere the decrease of pressure per 100 m increase in height (1) is greater at higher levels than at lower levels. (2) is smaller at higher levels than at lower levels. (3) remains constant at all levels. (4) is in the order of 27 hPa near MSL. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 422 - ID 1272 Over Central Europe what type of cloud cover is typical of the warm sector of a depression during winter?

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(1) Fair weather CU. (2) CU.CB. (3) ST. (4) CI.CS. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 423 - ID 4026 When in the upper part of a layer warm air is adverted the (1) wind speed will always decrease with increasing height in the northern hemisphere (2) stability increases in the layer (3) wind will back with increasing height in the northern hemisphere (4) stability decreases in the layer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 424 - ID 2542 Which types of clouds are typical evidence of stable air conditions? (1) NS.CU (2) ST, AS (3) CB.CC (4) CU.CB ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 425 - ID 14263 What are the conditions required for the formation of hoarfrost?; (1) The temperature of the surface is higher than the dew point of the air and the dew point is lower than 0°C; (2) Falling droplets on a surface with a temperature below freezing.; (3) The temperature of the surface is lower than the dew point of the air and the dew point is lower than 0°C; (4) Falling droplets on a surface while the air temperature is below freezing.; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 426 - ID 4032 When water evaporates into unsaturated air (1) relative humidity is not changed (2) relative humidity is decreased (3) heat is absorbed (4) heat is released ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 427 - ID 10879 During summer an anticyclone covers the British Isles giving mainly clear skies. At 0600 UTC a south coast airfield in Southern England reports a surface wind of 350/06. The coastline at the airfield perimeter is aligned in an east/west direction. During the next twelve hours the surface wind is likely to (1) back to NW and strengthen by mid-afternoon (2) increase from the north by mid-morning becoming calm towards evening (3) become southerly to southwesterly and increase in velocity by afternoon (4) veer to easterly before becoming calm by the afternoon ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 428 - ID 13653 A layer of stratus is most likely to be dispersed by (1) insolation resulting in the lifting of the condensation level (2) the release of latent heat due to precipitation (3) absorption of longwaved solar radiation in the stratus layer (4) adiabatic cooling due to subsidence ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 429 - ID 1280 Which of the following best describes the intertropical convergence zone ?

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(1) The zone where the trade winds of the northern hemisphere meet those of the southern hemisphere. (2) The zone where the Harmattan meets the north-easterly trade winds over Africa. (3) The zone where the west winds meet the subtropical high pressure belt. (4) The zone where cold fronts form in the tropics. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 430 - ID 12837 Which two air masses are most likely to govern weather in western Europe? (1) Maritime polar warm and continental tropical warm. (2) Maritime tropical warm and continental polar cold. (3) Continental tropical warm and continental polar cold. (4) Maritime tropical warm and maritime polar cold. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 431 - ID 14143 About ten identical clouds are in the sky, well isolated from one another, dense, with well defined contours, developping vertically in a cauliflower shape. The side of these clouds lit by the sun is bright white. Their base, relatively dark, is essentially horizontal and at FL 30, and their tops at FL 150. These clouds are (1) Altocumulus castellanus; (2) broken Cumulus; (3) towering Cumulus; (4) Stratocumulus; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 432 - ID 3731 In the ICAO Standard Atmosphere the decrease in temperature with height below 11 km is (1) rc per 100m (2) 0.6°C per 100m (3) 0.65°C per 100m (4) 0.5°C per 100m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 433 - ID 2547 A plain in Western Europe with an average height of 500 m (1600 FT) above sea level is covered with a uniform CC layer of cloud during the summer months. At what height above the ground is the base of this cloud to be expected? (1) 15000 - 35000 FT above the terrain (2) 100 -1500 FT above the terrain (3) 7000 -15000 FT above the terrain (4) 1500 - 7000 FT above the terrain ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 434 - ID 1695 What is the temperature deviation in degrees Celsius, from the ICAO Standard Atmosphere overhead Frankfurt ? (1) ISA +2°C (2) ISA-2°C (3) ISA+13°C (4) ISA-13°C

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 435 - ID 3485 A winter day in northern Europe with a thick layer of stratocumulus clouds and temperature close to zero degrees C at ground level, you can expect: (1) Turbulence due to a strong inversion, but no icing because clouds consist of ice crystals (2) A high probability for icing in clouds. Severe icing may occur in the upper part due to accumulation of large droplets. (3) Decreasing visibility due to snowfall below cloud base, but only light icing in clouds. (4) Reduced visibility and light icing in clouds ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 436 - ID 1685 At what approximate flight level is the tropopause over Frankfurt? (1) FL240 (2) FL300 (3) FL350 (4) FL330

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 437 - ID 4047 Which of the following are medium level clouds ? (1) Altostratus and altocumulus (2) Cirrocumulus and cirrostratus (3) All convective clouds (4) Cumulonimbus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 438 - ID 0 If the pressure surfaces bulge upwards in all levels then the pressure system is a (1) cold low (2) cold high (3) warm high (4) warm low ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 439 - ID 2506 The station pressure used in surface weather charts is

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(1) QNH (2) QNE (3) QFF (4) QFE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 440 - ID 10903 On the West coast of India it can be said in general that the wind blows (1) for six month from the North East and for six month from the South West (2) for six month from the North West and for six month from the South East (3) the whole year from the North East (4) the whole year from the South East ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 441 - ID 1549 During a flight at FL 100 from Marseille (QNH 1012 hPa)to Palma de Mallorca (ONH 1015 hPa), an aircraft remains at a constant true altitude. The reason for this is that: (1) one of the two ONH values may be incorrect. (2) the altimeters are erroneous, and need to be tested. (3) the air at Marseille is colder than that at Palma de Mallorca. (4) the air at Marseille is warmer than that at Palma de Mallorca. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 442 - ID 2170 Which of the following conditions are most favourable to the formation of mountain waves ? (1) Stable air at mountain top altitude and a wind at least 20 knots blowing across the mountain ridge. (2) Either stable or unstable air at mountain top and a wind of at least 30 knots blowing parallel to the mountain ridge. (3) Unstable air at mountain top altitude and a wind at least 20 knots blowing across the mountain ridge. (4) Moist unstable air at mountain top and wind of less than 5 knots blowing across the mountain ridge. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 443 - ID 0 In a warm front occlusion (1) the warm air is lifted (2) the warm front overtakes the cold front (3) the cold air is lifted (4) the warm front becomes a front aloft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 444 - ID 13571 What flight conditions are most likely to be experienced in square 2B by an aircraft at FL 120? (1) IMC in NS with risk of light icing (2) VMC above layers of ST and SC, generally stable conditions (3) VMC below an overcast of AS and CS, generally smooth air (4) IMC in layers of AS and isolated CB risk of severe turbulence and icing

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 445 - ID 10127 The most dangerous icing conditions are encountered in (1) icy clouds at high levels. (2) zones where the air temperature is below-15°C. (3) unstable clouds at medium levels. (4) supercooled precipitation. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 446 - ID 1773 The altimeter is set to 1013.2 hPa. The aircraft has to land on a point with an elevation of 290 feet where the ONH is 1023 hPa. The reading on the altimeter on the ground will be: (1) 560 FT. (2) -10 FT. (3) 11 FT. (4) 20 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 447 - ID 10932 The thickness of the troposphere varies with (1) rotation of the earth (2) the wind (3) latitude (4) longitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 448 - ID 12848 What lowest cloud base is most likely to be experienced during an approach into Madrid at 2300 UTC? TAF LEMD 281200Z 281812 13005KT CAVOK TEMPO 1821 8000 SCT020 SCT030 BECMG 2123 21005KT9999 SCT015 BKN080 PROB40 TEMPO 2306 6000 SCT008 (1) 1500 feet

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(2) 800 feet (3) 3000 feet (4) 2000 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 449 - ID 13645 In mature Cb's the probability of severe icing, according to meteorological rules, is greatest in the following temperature range: (1) +5°C to 0°C (2) 0°C to -23°C (3) -40°C to -60°C (4) -23°C to -40°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 450 - ID 1100 The most frequent wind direction in a valley caused by thermal effects is toward the: (1) valley during daylight hours. (2) valley during daylight as much as at night. (3) mountain at night. (4) mountain during daylight hours. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 451 - ID 1693 What wind is forecast at FL 390 over Paris ? (1) 190/40 (2) 030/40 (3) 210/40 (4) 240/20

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 452 - ID 4105 The prevailing surface wind in the area of the west coast of Africa north of the equator (gulf of Guinea) is a

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(1) SW monsoon in summer and NE tradewind in winter (2) NE monsoon in winter and SE tradewind in summer (3) NE tradewind in summer and SE tradewind in winter (4) SW monsoon in winter and NE monsoon in summer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 453 - ID 10885 For the same horizontal distance between adjacent isobars the gradient wind speed will be least at: (1) 3CTN with a cyclonic circulation (2) 5CTN with a cyclonic circulation (3) 3CTN in an anticyclone (4) 5CTN in an anticyclone ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 454 - ID 5035 A trough of low pressure on a surface synoptic chart is an area of (1) convergence and subsidence (2) convergence and widespread ascent (3) divergence and subsidence (4) divergence and widespread ascent ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 455 - ID 5016 The arrows labelled "r" represent the mean tracks of tropical revolving storms which occur mainly from (1) December to April and are called tornadoes (2) June to October and are called hurricanes (3) December to April and are called cyclones (4) June to October and are called typhoons

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 456 - ID 10923 The maximum vapour pressure over a flat supercooled water surface and the maximum vapour pressure over a flat ice surface of the same temperature are compared. The maximum vapour pressure is (1) equal over both surfaces (2) smaller over the water surface (3) the same over both surfaces if the air pressure is the same (4) greater over the water surface ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 457 - ID 13664 An inversion is (1) an unstable layer (2) an absolutely stable layer (3) a layer that can be either stable or unstable (4) a conditionally unstable layer

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 458 - ID 3738 Advection is: (1) the same as convection (2) vertical motion of air (3) the same as subsidence (4) horizontal motion of air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 459 - ID 4114 A gust front is (1) another name for a cold front (2) normally encountered directly below a thunderstorm (3) characterized by heavy lightning (4) formed by the cold air outflow from a thunderstorm ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 460 - ID 1571 An aircraft over Western Europe is crossing a jet stream 2500 FT below its core at right angles. While crossing, the outside temperature is increasing. The prevailing wind is (1) headwind. (2) from the right (3) from the left. (4) tailwind. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 461 - ID 4162 Under which of the following conditions is the most severe CAT likely to be experienced ? (1) A jet stream, with great spacing between the isotherms (2) A curved jet stream near a deep trough (3) A westerly jet stream at low latitudes in the summer (4) A straight jet stream near a low pressure area ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 462 - ID 10865 An occlusion has the characteristics of a warm front when: (1) the cold air behind is lifted by the warm air (2) the cold air behind is warmer than the cold air ahead (3) the cold air behind is colder than the cold air ahead (4) the cold air ahead is lifted ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 463 - ID 226 You are flying with an outside air temperature of-12*C and a TAS of 250 kt at FL 150 through 8 oktas NS. What type and degree of icing is most probable? (1) In clouds pushed up against the mountains, moderate to severe mixed ice. (2) In clouds pushed up against the mountains, moderate to severe clear ice. (3) Over flat terrain, away from fronts, moderate to severe mixed ice. (4) Over flat terrain, moderate hoarfrost. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 464 - ID 10856 Air masses which are being cooled from below are often characterized by: (1) continuous rain and freezing temperatures. (2) strong winds, cumulus clouds, good visibility. (3) uniform temperature, good visibility. (4) fog, poor visibility and layered clouds.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 465 - ID 57 Which FL corresponds with the 200 hPa pressure level ? (1) FL300. (2) FL100. (3) FL390. (4) FL50. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 466 - ID 4200 The Bora is a (1) squally warm catabatic wind which occurs mainly in summer (2) cold catabatic wind with gusts associated with a maritime air mass (3) cold catabatic wind with the possibility of violent gusts (4) cold catabatic wind always associated with clouds and heavy showers ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 467 - ID 4154 From which of the following pieces of information can the stability of the atmosphere be derived? (1) Pressure at the surface (2) Dry adiabatic lapse rate (3) Surface temperature (4) Environmental lapse rate ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 468 - ID 2577 When planning a flight at FL 110, which upper wind and temperature chart would be nearest your flight level ? (1) 300 hPa (2) 850 hPa (3) 500 hPa (4) 700 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 469 - ID 0 What relationship exists between the wind at 3000 feet and the surface wind? (1) The surface wind is veered compared to the wind at 3000 feet and is usually weaker. (2) They have the same direction, but the surface wind is weaker, caused by friction (3) They are practically the same, except when eddies exist, caused by obstacles (4) The wind at 3000 feet is parallel to the isohypses and the surface wind direction is across the isobars toward the low pressure and the surface wind is weaker. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 470 - ID 2526 What is the approximate speed of a 90 km/h wind, expressed in knots? (1) 55 kt (2) 70 kt (3) 50 kt (4) 60 kt ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 471 - ID 3742 Rising air cools because (1) it becomes more moist (2) surrounding air is cooler at higher levels (3) it contracts (4) it expands ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 472 - ID 1990 Which of the following types of jet streams can be observed all year round? (1) Arctic jet stream / subtropical jet stream. (2) Equatorial jet stream / polar front jet stream. (3) Equatorial jet stream / arctic jet stream. (4) Subtropical jet stream / polar front jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 473 - ID 2129 How are the air masses distributed in a cold occlusion ? (1) The coldest air behind and the warm air in front of the occlusion; the less cold air mass is above ground level. (2) The coldest air mass behind and the less cold air in front of the occlusion; the warm air mass is above ground level. (3) The coldest air in front of and the less cold air is behind the occlusion; the warm air mass is above ground level. (4) The coldest air in front of and the warm air behind the occlusion; the less cold air is above ground level. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 474 - ID 1097 What characteristic is associated with a temperature inversion ? (1) Clear ice (2) Area of active storms (3) Instability (4) Stability ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 475 - ID 4126 Supercooled droplets can occur in (1) clouds but not in fog (2) clouds but not in precipitation (3) precipitation but not in clouds (4) clouds, fog and precipitation ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 476 - ID 2600 Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (1) 15003KT9999BKN100 17/11 O1024NOSIG = (2) 2901OKT 9999 SCT045TCU 16/12 01015 RESHRANOSIG = (3) 04012G26KT 9999 BKN030 11/07 Q1024 NOSIG = (4) 24009KT 6000 RA SCT010 OVC030 12/11 Q1007 TEMPO 4000 = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 477 - ID 1778 The upper wind and temperature chart of 250 hPa corresponds, in a standard atmosphere, to about (1) 30 000 FT (2) 32 000 FT (3) 34 000 FT (4) 39 000 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 478 - ID 4076 The difference between geostrophic wind and gradient wind is caused by (1) curvature of isobars (2) horizontal temperature gradients (3) friction (4) slope of pressure surfaces ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 479 - ID 1624

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In which weather report would you expect to find information about icing conditions on the runway? (1) TAF (2) GAFOR (3) SIGMET (4) METAR ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 480 - ID 4161 Which of the following statements concerning jet streams is correct? (1) In the northern hemisphere both westerly and easterly jet streams occur (2) In the southern hemisphere no jet streams occur (3) In the northern hemisphere only westerly jet streams occur (4) In the southern hemisphere only easterly jet streams occur ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 481 - ID 10876 Considering the North Atlantic region between 3CTN and 65*N, the mean position of the polar front during summer extends from (1) Florida to SW England (2) Greenland to Spain (3) Newfoundland to N Scotland (4) NE Canada to Iceland ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 482 - ID 4107 The most dangerous low level wind shears are encountered (1) near valleys and at the windward side of mountains. (2) when strong ground inversions are present and near thunderstorms (3) in areas with layered clouds and wind speeds higher than 35 kt (4) during any period when wind speed is greater than 35 kt and near valleys ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 483 - ID 1675 Which airport, at 1200 UTC, has the lowest probability of precipitation? (1) ESSA (2) LSZH (3) ENFB (4) EFHK

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 484 - ID 12833 Which statement concerning the tropopause is correct? (1) Above the tropopause no clear air turbulence occurs (2) The temperature at the tropopause is approximately -8CTC over the Poles and approximately -4CTC over the equator (3) In the ICAO standard atmosphere the tropopause lies lower over the Poles than over the equator (4) The layer just above the tropopause is absolutely stable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 485 - ID 53 What is the approximate vertical interval which is equal to a pressure change of 1 hPa at an altitude of 5500 m ? (1) 32 m (105 FT). (2) 15 m (50 FT). (3) 8 m (27 FT). (4) 64 m (210 FT). ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 486 - ID 13646 In the METAR code the abbreviation VC indicates: (1) present weather within the approach area. (2) volcanic ash. (3) present weather within a range of 8 km, but not at the airport. (4) present weather at the airport. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 487 - ID 2500 The temperature at FL 160 is -22°C. What will the tem perature be at FL 90 if the ICAO standard lapse rate is applied ? (1) o°c (2) -4°C (3) -8°C (4) +4°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 488 - ID 1574

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Which of the following cloud types can project up into the stratosphere? (1) Altocumulus (2) Cirro stratus (3) Cumulonimbus (4) Alto stratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 489 - ID 13817 Which of these four METAR reports suggests that a thunderstorm is likely in the next few hours? (1) 201350Z21005KT9999 SCT040CB SCT100 26/18 Q1016 TEMPO 24018G30KTTS = (2) 201350Z 04012KT 3000 BR OVC012 04/03 Q1022 BECMG 6000 = (3) 201350Z34003KT0800 SN W002 M02/M04 01014 NOSIG = (4) 201350Z 16004KT8000 SCT110 OVC220 02/M02 Q1008 NOSIG = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 490 - ID 13709 A Cb with thunderstorm has reached the mature stage. Which statement is correct? (1) Severe turbulence occurs in the cloud, but hardly ever below the cloud. (2) In temperatures lower than -23*C icing is still possible. (3) The freezing level in the whole cloud lies lower than outside the cloud. (4) If hail occurs, it only occurs in downdrafts. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 491 - ID 13668 At a cold front: (1) warm air is compressed as cold air rises over it. (2) warm air is lifted as cooler air pushes under it. (3) temperature rises owing to increased pressure. (4) fog will form from the interaction of cold and warm air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 492 - ID 10940 What intensity and type of airframe icing is most likely to occur when flying at FL 170 in AS with the outside air temperature at-20*C? (1) Severe - clear (2) Moderate - hoarfrost (3) Moderate - clear (4) Light - rime ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 493 - ID 2256 During a flight over the sea atFL 100 from Marseille (QNH 1016 hPa)to Palma de Mallorca (QNH 1016 hPa), the true altitude is constantly decreasing. What is the probable reason for this ? (1) The air at Marseille is warmer than that at Palma de Mallorca (2) The altimeter is faulty (3) One of the QNH values must be wrong (4) The air at Palma de Mallorca is warmer than that at Marseille ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 494 - ID 2533 What does the term SIGMET signify? (1) A SIGMET is a brief landing forecast added to the actual weather report (2) A SIGMET is an actual weather report at an aerodrome and is generally issued at half-hourly intervals (3) A SIGMET is a flight forecast, issued by the meteorological station several times daily (4) A SIGMET is a warning of dangerous meteorological conditions ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 495 - ID 1557 You are flying at FL 130, and your true altitude is 12000 FT. What is the temperature deviation from that of the standard atmosphere at FL 130

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(ONH 1013,2 hPa)? (1) ISA +20°C (2) ISA+12°C (3) ISA +/-0°C (4) ISA-20°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 496 - ID 4260 The reason for the fact, that the atmospheric pressure of a polar front depression is normally lower in winter than in summer is that (1) the low pressure activity of the sea east of Canada is higher in winter. (2) the strong winds of the north Atlantic in winter are favourable for the development of lows. (3) the temperature contrasts between arctic and equatorial areas are much greater in winter. (4) converging air currents are of greater intensity in winter. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 497 - ID 10942 What is a favourable synoptic situation for the development of a Scirocco? (1) Extension of the Azores high pressure area over the Alps (2) Low pressure area in the western part of the mediterranean sea (3) High pressure area in the western part of the Mediterranean sea (4) High pressure area over Italy ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 498 - ID 240 What positions are connected by contour lines on a weather chart? (1) Positions with the same wind velocity. (2) Positions with the same thickness between two constant pressure levels. (3) Positions with the same air density. (4) Positions with the same height in a chart of constant pressure. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 499 - ID 0 Steaming fog (arctic sea smoke) occurs in air (1) that is absolutely stable (2) that is stable (3) with cold mass properties (4) with warm mass properties ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 500 - ID 12825 You are flying at FL 160. Outside air temperature is -27*C, and the pressure at sea level is 1003 hPa. What is the true altitude? (1) 16360 ft (2) 16920 ft (3) 15100 ft (4) 15620 ft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 501 - ID 1203 Which of the following is the definition of relative humidity ? (1) Ratio between water vapour (g) and air (kg) X 100 (2) Ratio between water vapour pressure and atmospheric pressure X 100 (3) Ratio between air temperature and dewpoint temperature X 100 (4) Ratio between the actual mixing ratio and the saturation mixing ratio X 100 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 502 - ID 10916 The conditions most favourable to the formation of mountain waves are

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(1) wind direction parallel to the mountain range - wind speed increasing with height- extensive isothermal layer between mountain crests and the tropopause (2) wind direction approximately at right angles to the mountain range - wind speed 30 kt and steadily increasing with height- an inversion just above the crest level with less stable air above and below (3) wind direction parallel to the general alignment of the mountain range - wind speed increasing with height- intense surface heating (4) wind speed less than 15 kt and wind direction at right angles to mountains - intense radiation cooling at night particularly at the higher levels ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 503 - ID 10935 Thunderstorms are often preceded by: (1) Alto stratus (2) Altocumulus Castellanus (3) Nimbostratus (4) Altocumulus Lenticularis ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 504 - ID 4127 During the formation of rime ice in flight, water droplets freeze (1) rapidly and spread out (2) slowly and spread out (3) slowly and do not spread out (4) rapidly and do not spread out ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 505 - ID 2552 With which of the following types of cloud is "+RA" precipitation most commonly associated? (1) AC (2) ST (3) NS (4) sc ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 506 - ID 10906 On a Significant Weather Chart, we see the following for the area where a VFR-flight will take place: BKN CU SC 100 / 023 If the flight is planned at FL 85, we can estimate that (1) we will fly above a solid cloud cover. (2) we will fly just below the cloud base where the cloud cover is between 5 and 7 oktas. (3) we will be in solid clouds and consequently a VFR flight is not possible. (4) we will probably have to divert around some cumulus tops. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 507 - ID 2001 At which altitude, at temperate latitudes, may hail be expected in connection with a CB? (1) From the ground up to a maximum of FL450. (2) From the ground up to about FL 200. (3) From the base of the clouds up to about FL 200. (4) From the ground up to about FL 100. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 508 - ID 2341 The degree of clear air turbulence experienced by an aircraft is proportional to the (1) intensity of the solar radiation (2) stability of the air (3) height of the aircraft (4) intensity of vertical and horizontal wind shear ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 509 - ID 1366 Which cross-section of air mass and cloud presentation is applicable to the straight line A-B?

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(1) 2 (2) 3 (3) 1 (4) 4

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 510 - ID 10963 Which of the following phenomena is least likely to lead to the formation of a Cumulonimbus with thunderstorm ? (1) Ground radiation (2) Convection (3) Convergence (4) Orographic lift ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 511 - ID 4115 What are the requirements for the formation of a thunderstorm?

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(1) Water vapour and high pressure (2) A stratocumulus cloud with sufficient moisture (3) An adequate supply of moisture, conditional instability and a lifting action (4) A cumulus cloud with sufficient moisture associated with an inversion ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 512 - ID 2008 Where, as a general rule, is the core of the polar front jet stream to be found? (1) In the polar air mass. (2) In the tropical air mass. (3) Just above the warm-air tropopause. (4) Just below the cold-air tropopause. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 513 - ID 4175 An isohypse of the 500 hPa pressure surface is labelled with the number 552. This means that for all points on the isohypse the (1) topography is 552 decameters above MSL (2) pressure is 552 hPa (3) topography is 552 meters above MSL (4) pressure altimeter will overread by 552 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 514 - ID 13648 In the mid-latitudes of the northern hemisphere the wind blows: (1) clockwise around cyclones and anti-clockwise around anticyclones. (2) direct from high to low pressure areas. (3) clockwise around anticyclones and anti-clockwise around cyclones. (4) clockwise around anticyclones and cyclones. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 515 - ID 1596 In which of the following situations can freezing rain be encountered ? (1) Behind a warm front in the summer (2) Ahead of a cold front in the summer (3) Ahead of a warm front in the winter (4) Ahead of a cold front in the winter ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 516 - ID 127 How does the height of the tropopause normally vary with latitude in the northern hemisphere ? (1) It decreases from south to north. (2) It remains constant from north to south. (3) It remains constant throughout the year. (4) It increases from south to north. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 517 - ID 1586 What process in an air mass leads to the creation of wide spread NS and AS cloud coverage? (1) Lifting (2) Convection process (3) Radiation (4) Sinking ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 518 - ID 12862 Why can the following METAR not be abbreviated to CAVOK? DLLO 121550Z 31018G30KT 9999 FEW060TCU BKN070 14/08 Q1016 TEMPO 4000 TS= (Aerodrome elevation 1000 ft, MSA for sector 000-190° 5800 ft, for sector 190-360° 7300 ft.) (1) Because thunderstorms are forecast temporary for the next 2 hours.

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(2) Because the cloud base is below the highest minimum sector altitude. (3) Because towering cumulus are observed. (4) Because there are gusts reported. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 519 - ID 1268 What type of low pressure area is associated with a surface front? (1) A cold air pool. (2) A low on lee side of a mountain. (3) Polar front low. (4) Heat low. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 520 - ID 4173 Which of the following statements concerning the core of a polar front jet stream is correct ? (1) It lies in the cold air; the wind reverses direction at the height of the core (2) It lies at a height where there is no horizontal temperature gradient; the slope of the pressure surfaces at the height of the core is at its maximum (3) It and its surface projection lie in the warm air (4) It lies in the warm air; its pressure surfaces are horizontal at the height of the core ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 521 - ID 12838 Stratus formed by turbulence will occur when (1) the wind speed is greater than 10 kt and the condensation level is situated just above the turbulent layer (2) the wind speed is less than 10 kt and the air is heated by the earth's surface (3) in the friction layer mixing occurs by turbulence and the condensation level is situated below the top of the turbulent layer (4) absolute instability exists at low level ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 522 - ID 5030 The weather most likely to be experienced at position "R" is (1) overcast with drizzle and hill fog (2) fine and warm at first- AC Castellanus and CB in late afternoon with thunderstorms (3) early morning fog lifting to low stratus (4) increasing amounts of AS and NS - heavy rain

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 523 - ID 4023 Which statement is true for a conditionally unstable layer? (1) The environmental lapse rate is less than 1°C/100m (2) The environmental lapse rate is less than 0.65°C/1 00m (3) The wet adiabatic lapse rate is 0.65°C/100m (4) The layer is unstable for unsaturated air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 524 - ID 1565 What is the average height of the jet core within a polar front jet stream? (1) 50000 FT. (2) 40000 FT. (3) 30000 FT. (4) 20000 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 525 - ID 4053 The presence of altocumulus castellanus indicates (1) stability in the higher troposphere (2) instability in the middle troposphere (3) strong convection at low height (4) subsidence in a large part of the troposphere ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 526 - ID 10844 A cumulus congestus is

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(1) a remnant of a CB (2) a cumulus that is of great vertical extent (3) a cumulus with little vertical development (4) a cumulus that only occurs in association with the ITCZ ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 527 - ID 2570 Which constant pressure altitude chart is standard for FL 100? (1) 850 hPa (2) 500 hPa (3) 300 hPa (4) 700 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 528 - ID 4038 The maximum amount of water vapour that the air can contain depends on the (1) air temperature (2) stability of the air (3) relative humidity (4) dewpoint ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 529 - ID 1987 In the weather briefing room during the pre-flight phase of a passenger flight from Zurich to Rome, you examine the following weather reports of * pressing importance at the time:; EINN SHANNON 2808 sigmet 2 valid 0800/1100 loc sevturb fcst einn fir blwfl 050 south of 53n wkn =; LIMM MILANO 2809 sigmet 2 valid 0900/1500 mod sev cat btn fl 250 and fl 430 fcst limm fir stnr nc =; EGLL LONDON 2808 sigmet nr01 valid 0800/1200 for london fir isol cb embd in lyr cloud fcst tops fl 300 btn 52n and 54n east of 002e sev ice sev turb ts also fcst mov e wkn =; Which (1) You show no further interest in these reports, since they do not concern the route to be flown. (2) Owing to these reports and taking into account the presence of heavy thunderstorms at planned FL 310 you select a higher flight level (FL 370). (3) You cancel the flight since the expected dangerous weather conditions along the route would demand too much of the passengers. (4) Because of the expected turbulence you select a flight level below FL 250. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 530 - ID 1981 To which aerodrome is the following TAF most applicable ? TAF 231019 24014KT 6000 SCT030 BKN100 TEMPO 1113 25020G38KT 2500 +TSRA SCT008 BKN025CB BECMG 1315 28012KT 9999 SCT025 TEMPO 5000 SHRABKN020 BECMG 1719 27008KT9999 SCT030 (1) LEMD (2) LFPG (3) EKCH (4) LOVWV

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 531 - ID 12849 What kind of fog is often observed in the coastal region of Newfoundland in spring time? (1) Radiation fog. (2) Frontal fog. (3) Advectionfog. (4) Steaming fog. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 532 - ID 3740 The radiation of the sun heats (1) the air in the troposphere mainly by absorbtion (2) the water vapour in the air of the troposphere (3) the surface of the earth, which heats the air in the troposphere (4) the air in the troposphere only directly if no clouds are present ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 533 - ID 1226 Which forces are balanced with geostrophic winds? (1) Pressure gradient force, centrifugal force, friction force. (2) Pressure gradient force, Coriolis force. (3) Friction force, pressure gradient force, Coriolis force. (4) Pressure gradient force, Coriolis force, centrifugal force. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 534 - ID 10927 The lowest cloud type observed is Stratus fractus, and there is moderate continuous rain. The area of the system in which you are at this moment is (1) the warm sector (2) behind the cold front (3) the main body of the warm or cold front, or of the occlusion (4) the high pressure area ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 535 - ID 10124 The core of the polar front jet stream is usually located in the (1) polar air below the tropopause (2) polar air above the tropopause (3) tropical air above the tropical tropopause (4) tropical air below the tropopause ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 536 - ID 4103 Which of the following statements concerning the intertropical convergence zone is true? (1) There are frequent occurrences of CB (2) It is an area of low pressure and low relative humidity (3) It does not change its position over the oceans during the year (4) It lies totally in the northern hemisphere in July and totally in the southern hemisphere in January ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 537 - ID 10975 Which statement is correct concerning a mountain ridge where a marked mountain wave has been reported ? (1) Ragged altocumulus lenticularis is an indication for the presence of moderate/severe turbulence at the level of these clouds (2) The atmosphere is unstable at the level of the mountain tops (3) The axis of a rotor is horizontal and perpendicular to the mountains (4) There are always rotor clouds ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 538 - ID 13607 The temperature lapse rate of the standard atmosphere in the troposphere is: (1) 2°C/1000FT (2) 3°C/1000FT (3) 2,5°C/1000FT (4) 6,5°C/1000FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 539 - ID 4191 The pressure altitude is equal to the true altitude if (1) standard atmospheric conditions occur (2) the outside air temperature is standard for that height (3) the air pressure is 1013.25 hPa at the surface (4) the indicated altitude is equal to the pressure altitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 540 - ID 5025 The dotted line labelled "Y" represents the (1) axis of the subtropical jet stream during January (2) mean position of the intertropical convergence zone (ITCZ) during January (3) mean position of the intertropical convergence zone (ITCZ) during July (4) axis of the equatorial jet stream during July

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 541 - ID 1547 What is the relationship, if any, between QFE and QNH at an airport situated 50 FT below sea level? (1) No clear relationship exists. (2) QFE is greater than QNH. (3) QFE is smaller than QNH. (4) QFE equals QNH. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 542 - ID 1576 The 0* isotherm is forecast to be at FL 50. At what FL would you expect a temperature of-6* C? (1) FL 110 (2) FL100 (3) FL20 (4) FL80 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 543 - ID 10877 Convective weather phenomena include (1) heavy showers, lightning strikes, hail, mist, squalls, light rain over a large area (2) thunderstorms, tornadoes, hail, haze, wind gusts, advection fog (3) hail, lightning strikes, wind lulls, squalls, stratocumulus, low level wind maximum (4) thunderstorms, hail, tornadoes, wind gusts, heavy showers, lightning strikes ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 544 - ID 13640 Given: Altimeter setting: 1013.2 hPa Altimeter reading: 5000 ft Outside air temperature at 5000 ft: +5°C QFE: 958 hPa ONH: 983 hPa What is the true height of the aeroplane above the aerodrome? (1) 4865 FT (2) 3515 FT (3) 4190 FT (4) 4325 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 545 - ID 5013 The pressure system at position "D" is a (1) ridge of high pressure (2) secondary low (3) col (4) trough of low pressure ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 546 - ID 4135 In unstable air, surface visibility is most likely to be restricted by (1) haze (2) showers of rain or snow (3) drizzle (4) low stratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 547 - ID 13667 As a result of diurnal variation radiation fog is lifted and a cloud cover is formed. Which statement is true? (1) Low stratus will develop caused by increasing wind speed. (2) Layers of altocumulus will develop caused by increasing wind speed. (3) Low stratus will develop caused by radiation in combination with low geostrophic wind speed. (4) Stratocumulus will develop caused by insolation. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 548 - ID 10939 What intensity and type of airframe icing is most likely to occur when aircraft descend rapidly from FL 320 (temp. -45*C) to FL 60 in warm, moist clear air? (1) Nil ice (2) Light or moderate hoarfrost (3) Moderate opaque rime (4) Light opaque rime and light clear ice ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 549 - ID 2172 The Jetstream and associated clear air turbulence can sometimes be visually identified in flight by (1) long streaks of cirrus clouds. (2) dust or haze at high level (3) a high-pressure centre at high level (4) a constant outside air temperature ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 550 - ID 12827 TAF LSZH 250600Z 250716 00000KT0100 FG W001 BECMG 0810 0800 W002 BECMG 1012 23005KT2500 BR BKN005 TEMPO 1316 6000 SCT007 = Which of these statements best describes the weather that can be expected at 1200 UTC? (1) Visibility 800 metres, fog, vertical visibility 200 feet, calm (2) Visibility 2,5 kilometres, mist, cloud base 500 feet, wind speed 5 knots (3) Visibility 6 kilometres, cloud base 500 feet, wind speed 5 knots (4) Visibility 800 metres, fog, wind from 230°, cloud base 500 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 551 - ID 4077 The vertical extent of the friction layer depends primarily on (1) temperature, local time, environmental lapse rate (2) wind speed, roughness of surface, temperature (3) stability, wind speed, roughness of surface (4) roughness of surface, temperature, local time ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 552 - ID 10875 Considering the North Atlantic between 3CTN and 65*N, the mean position of the polar front during winter extends from (1) NE Canada to Portugal (2) Iceland to Norway (3) Newfoundland to Iceland (4) Florida to SW England ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 553 - ID 13606 The term CAVOK is used when weather conditions are: (1) 9000, SKC, NOSIG (2) 9999, NSC, NSW (3) 9999, NSC, NOSIG (4) 8000, HAZARDOUS WX NIL, NOSIG ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 554 - ID 1229 For an aircraft what are the meteorological dangers associated with a Harmattan wind? (1) Thunderstorms. (2) Sand up to FL 150. (3) Dust and poor visibility. (4) Hail. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 555 - ID 2720 The region of the globe where the greatest number of tropical revolving storms occur is (1) the Caribbean sea, affecting the West Indies, Mexico and the south-east coastline of the USA. (2) the north-west Pacific, affecting Japan, Taiwan, Korea and the Chinese coastline. (3) the south-western Indian ocean, affecting Madagascar, Mauritius and the island of Rnion. (4) the northern Indian ocean, affecting India, Sri Lanka and Bangladesh. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 556 - ID 12861 What is the best approximation for the wind speed at flight level 250? (1) By interpolation of the wind information available from the 500 and 300 hPa charts, while also considering the maximum wind information found on the Significant Weather Chart. (2) By simple interpolation of wind information available from the 500 and 300 hPa charts. (3) By reading wind direction and speed from the 500 hPa chart. (4) By reading wind direction and speed from the 300 hPa chart. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 557 - ID 1266 What cloud formation is most likely to occur at low levels when a warm air mass overrides a cold air mass? (1) Cumulonimbus. (2) Cumulus. (3) Alto stratus. (4) Nimbostratus. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 558 - ID 12852 What is the relationship between visibility and RVR in homogeneous fog? (1) There is no specific relationship between the two. (2) The visibility generally is greater than the RVR. (3) The visibility generally is less than the RVR. (4) The visibility generally is the same as the RVR. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 559 - ID 229 In Central Europe when is the greatest likelihood for thunderstorms due to warm updrafts? (1) Mid- afternoon. (2) Late morning. (3) Around midnight. (4) Early morning. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 560 - ID 4195 A wide body takes off on a clear night in Dhahran, Saudi Arabia. Shortly after take off the aircraft's rate of climb drops to zero. This can be due to (1) a very strong temperature inversion (2) very pronounced downdrafts (3) low relative humidity (4) sand/dust in the engines ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 561 - ID 2510 Which FL corresponds with the 850 hPa pressure level ? (1) FL390 (2) FL300 (3) FL50 (4) FL100 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 562 - ID 4102 The transition from SWto NE monsoon in India occurs in (1) December, January, February (2) September, October, November (3) July, August, September (4) February, March, April ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 563 - ID 10903 Mountain waves should be expected (1) when instability is high (2) on the upwind side of the mountain chain (3) directly over the mountain chain (4) on the downwind side of the mountain chain ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 564 - ID 10945 What is the difference between radiation fog and advection fog ? (1) Radiation fog forms due to night cooling and advection fog due to daytime cooling. (2) Radiation fog forms due to surface cooling at night in a light wind. Advection fog forms when warm humid airflows over a cold surface. (3) Radiation fog is formed by surface cooling in a calm wind. Advection fog is formed by evaporation over the sea. (4) Radiation fog forms only on the ground, advection fog only on the sea. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 565 - ID 12797 With all other quantities being constant, the density of the atmosphere increases with increasing (1) air pressure (2) relative humidity (3) temperature (4) stability ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 566 - ID 1622 What does the expression "Broken (BKN)" mean? (1) Nil significant cloud cover (2) 5-7 Eights of the sky is cloud covered (3) 3-5 Eights of the sky is cloud covered (4) 3-4 Eights of the sky is cloud covered ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 567 - ID 10954 When compared to the geostrophic wind in the northern hemisphere, surface friction will cause the surface wind to (1) back and increase (2) veer and decrease (3) back and decrease (4) veer and increase ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 568 - ID 10963 Which of the following statements is true of the dew point of an air mass? (1) It can be used together with the air pressure to estimate the air mass's relative humidity (2) It can only be equal to, or lower, than the temperature of the air mass (3) It can be used to estimate the air mass's relative humidity even if the air temperature is unknown (4) It can be higher than the temperature of the air mass ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 569 - ID 5012 Select the answer which you consider will complete correctly the following statement in relation to the main pressure systems affecting the North Atlantic region between 30°N and 65*N. During w inter the predominant mean low pressure system at the surface (1) USA (2) Siberia (3) Azores (4) Iceland / Greenland ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 570 - ID 12793 Which of the following quantities remains unchanged if unsaturated air is lifted until it reaches the lifting condensation level? (1) Mixing ratio (2) Difference between temperature and dewpoint temperature (3) Maximum vapour pressure (4) Maximum mixing ratio ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 571 - ID 4121

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The diameter of a typical tornado is (1) only a few metres (2) about 2 to 6 km (3) in the order of 10 km (4) 100 to 150 metres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 572 - ID 1233 A mountain breeze (katabatic wind) blows (1) down the slope during the day. (2) up the slope during the day. (3) down the slope during the night. (4) up the slope during the night. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 573 - ID 4192 You must make an emergency landing at sea. The QNH of a field on a nearby island with an elevation of 4000 FT is 1025 hPa and the temperature is -20*C. What is your pressure altimeter reading when landing if 1025 hPa is set in the subscale? (1) More than 0 FT, but less than 4000 FT (2) OFT (3) Less than 0 FT (4) 4000 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 574 - ID 13564 The cloud type most applicable to square 1E is (1) sc (2) NS (3) CB (4) cs

----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 575 - ID 13651 Good visibility in the lower levels may be expected when (1) warm air is moving over a cold surface. (2) the atmospheric pressure is low. (3) the air temperature is low. (4) cool dry air is moving over a warmer surface. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 576 - ID 1614 Clear ice forms on an aircraft by the freezing of: (1) large supercooled water drops (2) water vapour (3) snow (4) small supercooled water drops ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 577 - ID 4201 The range of wind speed in which radiation fog is most likely to form is: (1) between 10 and 15 kt (2) between 5 and 10 kt (3) below 5 kt (4) above 15 kt ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 578 - ID 5542 In the mid-latitudes the stratosphere extends on an average from (1) 85 to more than 200 km (2) 0 to 11 km (3) 50 to 85 km (4) 11 to 50 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 579 - ID 2125 In an air mass with no clouds the surface temperature is 15*C and the temperature at 1000 m/AGL is 13*C. This layer of air is: (1) conditionally unstable (2) unstable (3) a layer of heavy turbulence (4) stable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 580 - ID 4130 Clear ice is formed when supercooled droplets are (1) large and at a temperature just below freezing (2) small and freeze rapidly (3) of any size at temperatures below -35*C. (4) small and at a temperature just below freezing ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 581 - ID 10952 When a front has to cross a chain of mountains, its activity (1) ceases immediately. (2) strengthens "upwind" of the mountains. (3) is not disturbed by the mountains. (4) decreases when it reaches the mountains. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 582 - ID 1222

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A plain in Western Europe with an average elevation of 500 m (1600 FT) above sea level is covered with a uniform AC layer of cloud during the summer months. At what height above the ground is the base of this cloud to be expected? (1) 100 -1500 FT above the terrain. (2) 15000 - 25000 FT above the terrain. (3) 1500 - 7000 FT above the terrain. (4) 7000 -15000 FT above the terrain. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 583 - ID 4042 A cumulonimbus cloud at mid-latitudes in summer contains (1) ice crystals and water droplets but never supercooled water droplets (2) only ice crystals (3) only water droplets (4) ice crystals, water droplets and supercooled water droplets ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 584 - ID 10971 Which of the following types of clouds are evidence of unstable air conditions? (1) CU.CB. (2) ST, CS. (3) CI.SC. (4) SC.NS. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 585 - ID 2003 What is a SPECI? (1) An aerodrome forecast issued every 9 hours. (2) A routine aerodrome weather report issued every 3 hours. (3) A special aerodrome weather report, issued when a significant change of the weather conditions have been observed. (4) A warning of meteorological dangers at an aerodrome, issued only when required. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 586 - ID 3737 When the subscale is set to the ONH of an airfield the pressure altimeter indicates (1) elevation while landing (2) zero while landing (3) elevation while landing only if conditions are as in the ICAO Standard Atmosphere (4) zero while landing only if conditions are as in the ICAO Standard Atmosphere ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 587 - ID 2527 What is the approximate speed of a 40-knot wind, expressed in m/sec? (1) 20 m/sec (2) 15 m/sec (3) 30 m/sec (4) 25 m/sec ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 588 - ID 10977 Which thunderstorms move forward the fastest? (1) Frontal thunderstorms. (2) Orographic thunderstorms. (3) Thermal thunderstorms. (4) Thunderstorms formed by lifting processes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 589 - ID 2537 If Paris reports a wind of 30012KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground

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? (1) 23030KT (2) 27020KT (3) 30025KT (4) 33025KT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 590 - ID 1626 Which of the following extracts of weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (MSA minus airport elevation equals: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT) (1) LSGG 22003KT9999 SCT120 BKN280 09/08 Q1026 BECMG 5000 BR = (2) LSZH 26024G52KT 9999 BKN060 17/14 Q1012 RETS TEMPO 5000TSRA = (3) LFSB 00000KT9000 SCT080 22/15 Q1022 NOSIG = (4) LSZB 30004KT 9999 SCT090 10/09 Q1006 NOSIG = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 591 - ID 4167 A layer in which the temperature decreases with 1°C pe r 100m increasing altitude is (1) absolutely unstable (2) absolutely stable (3) neutral for dry air (4) conditionally unstable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 592 - ID 13662 In which environment is aircraft structural ice most likely to have the highest accumulation rate? (1) Cumulus clouds. (2) Cirrus clouds. (3) Freezing rain. (4) Stratus clouds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 593 - ID 4106 What information is given on a Significant Weather Chart? (1) The significant weather in a period 3 hours before and 3 hours after the time given on the chart (2) The significant weather forecast for the time given on the chart (3) The significant weather forecast for a period 6 hours after the time given on the chart (4) The significant weather that is observed at the time given on the chart ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 594 - ID 2697 Looking at the chart, at what altitude above Frankfurt would you expect the tropopause to be located? (1) FL410 (2) FL330 (3) FL360 (4) FL390 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 595 - ID 2556 With what type of cloud is heavy precipitation unlikely during the summer months ? (1) AS.NS (2) SC.AS (3) CB.ST (4) NS.CC ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 596 - ID 2543 Which of the following cloud types is found at high levels?

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(1) ci (2) cu (3) AS (4) sc

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 597 - ID 453 Under the weather conditions depicted, which of the following statements is likely to apply? (1) Thunderstorms may occur in the summer months over Central Europe. (2) Radiation fog is unlikely in Central Europe in the winter. (3) Moderate to strong Foehn in the Alps. (4) Severe gradient wind likely over Central Europe. Please select A, B, C or D from above.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 598 - ID 1621 What is a trend forecast? (1) A landing forecast appended to METAR/SPECI, valid for 2 hours (2) A routine report (3) A route forecast valid for 24 hours (4) An aerodrome forecast valid for 9 hours ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 599 - ID 4128 Supercooled droplets are always (1) at a temperature below freezing

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(2) small and at a temperature below freezing (3) at a temperature below -6CTC (4) large and at a temperature below freezing ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 600 - ID 1283 What is encountered during the summer, over land, in the centre of a cold air pool? (1) Fine weather CU. (2) Sky clear (SKC). (3) Showers and thunderstorms. (4) Strong westerly winds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 601 - ID 454 In which of these temperature bands is ice most likely to form on the aircraft's surface? (1) -35°C to -50°C (2) -20°C to -35°C (3) +10°CtoO°C (4) 0°Cto-10°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 602 - ID 1256 In which air mass are extremely low temperatures encountered? (1) Continental polar air. (2) Maritime polar air. (3) Maritime arctic air. (4) Continental tropical air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 603 - ID 5017 Which is true of a secondary depression in the northern hemisphere? (1) It tends to maintain its position relative to the primary (2) It rapidly closes on, and merges with the primary (3) It tends to move round the primary in an anticyclonic sense (4) It tends to move round the primary in a cyclonic sense ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 604 - ID 2576 When planning a flight at FL 60, which upper wind and temperature chart would be nearest your flight level ? (1) 500 hPa (2) 300 hPa (3) 700 hPa (4) 850 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 605 - ID 1592 Which of the following conditions is most likely to lead to the formation of steam fog (arctic smoke)? (1) Cold air moving over warm water (2) The coastal region of the sea cools at night (3) Warm air moving over cold water (4) The sea is warmed by strong radiation from the sun ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 606 - ID 4037 Steady precipitation, in contrast to showery precipitation falls from (1) stratiform clouds with severe turbulence (2) convective clouds with little or no turbulence (3) convective clouds with moderate turbulence

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(4) stratiform clouds with little or no turbulence ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 607 - ID 2042 At about what geographical latitude as average is assumed for the zone of prevailing westerlies? (1) 80°N. (2) 10°N. (3) 30°N. (4) 50°N. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 608 - ID 12799 With the development of a thunderstorm, at what stage will there be only updraughts of air? (1) Initial stage (2) Mature stage (3) Anvil stage (4) Dissipating stage ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 609 - ID 2623 On which of the following routes can you expect icing to occur, on the basis of the chart? (1) Copenhagen - Helsinki (2) Rome - Frankfurt (3) Hamburg - Oslo (4) Tunis - Rome ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 610 - ID 14363 In the trade wind belt between the surface and the 500 hPa level, which of the following is true? (1) the air is relatively dry (2) the air is relatively moist in the lower part and dry in the upper part (3) the air is relatively dry in the lower part and moist in the upper part (4) the air is relatively moist ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 611 - ID 13670 An aeroplane flies at flight level 40. Elevation of the aerodrome: 990 ft; QNH 976 hPa. The tower clears the pilot to fly at 3000 ft QNH. Which of the following statements is correct? (1) Only a small change of altitude is necessary. (2) The aeroplane has to climb about 1000 ft. (3) The aeroplane has to descend about 1000 ft. (4) The aeroplane has to descend about 2000 ft. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 612 - ID 1552 What units are used to report vertical wind shear? (1) m/sec. (2) m/100FT. (3) ktnOOFT. (4) kt. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 613 - ID 3483 In which of the following situations is an aircraft most susceptible to icing ? (1) Flying in dense cirrus clouds. (2) Level flight below a rain producing cloud when OAT is below zero degrees C. (3) Level flight in snowfall below a nimbostratus layer. (4) Flying in heavy drizzle.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 614 - ID 5002 Assuming a generalised zonal system of world wind circulation, the SE trade winds are applicable to zone (1) U (2) t (3) V (4) W ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 615 - ID 1599 What is the relative movement of the two air masses along a cold front ? (1) Warm air pushes over a cold air mass (2) Cold air slides over a warm air mass (3) Cold air pushes under a warm air mass (4) Warm air pushes under a cold air mass ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 616 - ID 1274 What is the surface visibility most likely to be in a warm sector of maritime tropical air during a summer afternoon in western Europe? (1) Moderate (several km). (2) Good (greater than 10 km). (3) Very good (greater than 50 km). (4) Very poor (less than 1 km). ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 617 - ID 10936 Thunderstorms reach their greatest intensity during the (1) dissipating stage. (2) period in which precipitation is not falling. (3) cumulus stage. (4) Mature stage. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 618 - ID 2575 If you are planning a flight at FL 290, which of these upper wind and temperature charts would be nearest your flight level ? (1) 850 hPa (2) 700 hPa (3) 500 hPa (4) 300 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 619 - ID 1770 An altimeter adjusted to 1013 hPa indicates an altitude of 3600 FT. Should this altimeter be adjusted to the local ONH value of 991 hPa, the altitude indicated would be (1) 4194 FT. (2) 4278 FT. (3) 3006 FT. (4) 2922 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 620 - ID 10955 When flying at 5000 feet in the northern hemisphere over plains (flat country) with an anticyclone on the left and a depression on the right, the wind will be (1) a tail wind. (2) a headwind. (3) from the right. (4) from the left.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 621 - ID 13679 In which air mass are extremely low temperatures encountered? (1) Maritime polar air. (2) Maritime arctic air. (3) Continental polar air. (4) Continental tropical air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 622 - ID 4117 In which of the following areas is the highest frequency of thunderstorms encountered ? (1) Tropical (2) Polar (3) Temperate (4) Subtropical ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 623 - ID 0 Visibility is reduced by haze when (1) small water droplets are present (2) a cold front just passed (3) a light drizzle falls (4) dust particles are trapped below an inversion ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 624 - ID 5539 From what type of cloud does drizzle fall ? (1) Cumulus (2) Alto stratus (3) Stratus. (4) Cirro stratus. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 625 - ID 4062 The Foehn wind is a (1) cold anabatic wind (2) warm anabatic wind (3) cold katabatic wind (4) warm katabatic wind ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 626 - ID 2244 The QNH at an airfield located 0 metres above sea level is 1022 hPa. The air temperature is not available. What is the QFF? (1) It is not possible to give a definitive answer (2) 1022 hPa (3) Less than 1022 hPa (4) More than 1022 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 627 - ID 2504 How would you characterise an air temperature of-55*C at the 200 hPa level over western Europe? (1) Very high (2) Within +/-5°C of ISA (3) High (4) Low ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 628 - ID 452 In a situation with a weak pressure gradient and no thunderstorms around, what will the indication of the aneroid altimeter of an aircraft parked on the ground do over a period of about ten minutes? (1) Show strong fluctuations. (2) Increase rapidly. (3) Decrease rapidly. (4) Apparently nothing, because any changes would be small. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 629 - ID 2619 Select from the map the average wind for the route Zurich - Hamburg at FL 240. (1) 230/20 (2) 020/20 (3) 200/15 (4) 260/25 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 630 - ID 5026 What weather conditions are most likely to affect an approach to Dakar during July? (1) Reduced visibility due to the rising sand of the Harmattan (2) Dry and clear due to the influence of the Azores high pressure system (3) Wet and thundery due to the proximity of the intertropical convergence zone (ITCZ) (4) Generally clear skies - NW trade winds ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 631 - ID 13608 The SW monsoon starts in the month of (1) December in southern India to reach Pakistan in May. (2) June in southern India to reach Pakistan in July. (3) March in southern India to reach Pakistan end of April. (4) September in Pakistan to reach southern India in November. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 632 - ID 13590 What conditions are most likely to prevail at an aerodrome located in square 3B? (1) Broken CU base 2000 FT, visibility more than 5 km, occasional showers of rain or snow (2) 6-8 oktas SC and ST, visibility moderate to poor in drizzle (3) Mainly overcast at 8000 FT, visibility less than 5 km in continuous moderate rain (4) Intermittent thunderstorms otherwise generally clear skies with good visibility ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 633 - ID 4196 Given the following METAR: EDDM 250850Z 33005KT 2000 R26R/P1500N R26L/1500N BR SCT002 OVC003 05/05 Q1025 NOSIG Which of the following statements is correct ? (1) Visibility is reduced by water droplets (2) RVR on runway 26R is increasing (3) There is a distinct change in RVR observed (4) Runway 26R and runway 26L have the same RVR ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 634 - ID 2521 You are flying at FL 160. Outside air temperature is -27*C, and the pressure at sea level is 1003 hPa. What is the true altitude? (1) 16920 ft (2) 15100 ft (3) 15620 ft (4) 16360 ft ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 635 - ID 4183 SIGMET information is issued as a warning for significant weather to (1) light aircraft only (2) VFR operations only (3) all aircraft (4) heavy aircraft only ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 636 - ID 12831 Which statement is correct for a warm occlusion? (1) The cold front becomes a front aloft. (2) The warm front overtakes the cold front. (3) The warm front becomes a front aloft. (4) Both fronts become fronts aloft. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 637 - ID 2254 An aircraft flying at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1006 hPa) experiences no change to true altitude. The reason for this is that: (1) the altimeters are erroneous, and need to be tested (2) the air at Palma de Mallorca is warmer than that at Marseille (3) the air at Palma de Mallorca is colder than that at Marseille (4) one of the two QNH values may be incorrect ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 638 - ID 2604 Which of the following statements is an interpretation of the SIGMET ? LSAS SIGMET 2 VALID 030700/031100 LSZH- SWITZERLAND FIR/UIR MOD TO SEV CAT FCST N OF ALPS BTN FL 260/380 STNR INTSF= (1) Zone of moderate to severe turbulence moving towards the area north of the Alps. Intensity increasing. Pilots advised to cross this area above FL 260 (2) Moderate to severe clear air turbulence to be expected north of the Alps. Intensity increasing. Danger zone between FL 260 and FL 380 (3) Moderate to severe clear air turbulence of constant intensity to be expected north of the Alps (4) Severe turbulence observed below FL 260 north of the Alps. Pilots advised to cross this area above FL 380 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 639 - ID 4078 During periods of prolonged clear skies associated with anticyclonic conditions, the (1) angle between isobars and surface wind direction tends to be greatest in the early afternoon (2) wind tends to back from early morning until early afternoon (3) surface wind speed tends to be highest during the early afternoon (4) surface wind speed tends to be highest at night ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 640 - ID 10969 Which of the following statements is true with regard to mountain waves? (1) The absence of cloud over high ground indicates the absence of mountain waves (2) Flight with tailwind toward high ground is likely to be more hazardous than flight with headwind toward high ground (3) Mountain waves are not experienced beyond 100 miles downwind from initiating high ground, regardless of the height of the ground (4) Flight with headwind toward high ground is likely to be more hazardous than flight with tailwind toward high ground ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 641 - ID 4254 Two aircraft, one with a sharp wing profile (S), and the other with a thick profile (T), are flying through the same cloud with same true airspeed. The cloud consists of small supercooled droplets. Which of the following statements is most correct concerning ice accretion ? (1) Aircraft S and T experience the same amount of icing (2) Aircraft T experiences more icing than S. (3) Aircraft S experiences more icing than T. (4) Neither of the aircraft accumulate ice due to the small size of droplets.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 642 - ID 453 In which of these cloud types can icing be virtually ruled out? (1) NS (2) sc (3) cu (4) CI

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 643 - ID 12828 Which statement is correct for the southern hemisphere? (1) The jet streams are easterly (2) If the wind veers with increasing height then warm air is advected (3) In the friction layer the wind backs with increasing height (4) The wind veers at the passage of a cold front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 644 - ID 2127 The thickness of the troposphere varies with (1) longitude (2) rotation of the earth (3) the wind (4) latitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 645 - ID 1629 At which airport, is the following weather development taking place? TAF 060600Z 060716 25006KT 8000 BKN240 BECMG 0710 OVC200 BECMG 1013 23010KT 8000 OVC100 BECMG 1316 23014KT6000 RASCT030 OVC050 = (1) LEMD (2) LOVWV (3) LFPO (4) EDDL

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 646 - ID 10873 Considering the North Atlantic area north of 6CTN during winter, the mean height of the tropopause is approximately (1) 37 000 FT (2) 29 000 FT (3) 20 000 FT (4) 56 000 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 647 - ID 1996 Isolated thunderstorms of a local nature are generally caused by (1) frontal lifting (warm front). (2) frontal occlusion. (3) frontal lifting (cold front). (4) thermal triggering. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 648 - ID 5037 A Foehn wind occurs on the (1) leeward side of a mountain range and is caused by significant moisture loss by precipitation from cloud (2) leeward side of a mountain range and is caused by the condensation level being lower on the leeward side than on the windward side (3) windward side of a mountain range and is caused by surface cooling and reverse airflow (4) windward side of a mountain range and is caused by surface heating ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 649 - ID 10847 A parcel of unsaturated air is forced to rise through an isothermal layer. So long as it remains unsaturated, the temperature of the parcel (1) becomes equal to the temperature of the isothermal layer (2) decreases 0.65°C per 100 m (3) decreases TC per 100 m (4) remains constant ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 650 - ID 14151

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What is the lowest cloud base that can be expected from the forecast for 1500 UTC ? KCHS 280430Z 280606 VRB05KT4000 BR SCT005 OVC013 PROB40 SHRABECMG 1314 9000 SHRAOVC015 PROB40 TEMPO 1416 VRB15G25KT 1600 TSRAOVC010CB BECMG 1618 26010KTBKN030 BECMG 2122 CAVOK. (1) 3000 feet (2) 1300 feet (3) 1500 feet (4) 1000 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 651 - ID 59 In order to calculate QFE from QNH, which of the following must be known ? (1) Temperature at the airfield. (2) Elevation of the airfield and the temperature at MSL. (3) Elevation of the airfield. (4) Elevation and the temperature at the airfield. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 652 - ID 1551 At what time of the year are typhoons most likely to occur over the southern islands of Japan? (1) January to May. (2) September to January. (3) July to November. (4) May to July. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 653 - ID 2249 If the QNH at Locarno (200 metres above sea level) is 1015 hPa, what is the approximate QFE? (1) 995 hPa (2) 1005 hPa (3) 990 hPa (4) 1000 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 654 - ID 4045 The main factor which contributes to the formation of very low clouds ahead of a warm front is the (1) saturation of the warm air by rain falling into it and evaporating (2) reduction of outgoing radiation due to clouds (3) saturation of the cold air by rain falling into it and evaporating (4) warm air moving over a cold surface ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 655 - ID 12805 When severe mountain waves are present, where would the area of most severe turbulence be located? (1) Just above the cap cloud (2) On the windward side of the mountain range (3) In the rotor zone (4) Just below the tropopause ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 656 - ID 2535 If Paris reports a wind of 0801OKT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ? (1) 08005KT (2) 11020KT (3) 05020KT (4) 08015KT ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 657 - ID 4139 The QNH is equal to the QFE if (1) T actual > T standard (2) T actual = T standard (3) the elevation = 0 (4) T actual < T standard ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 658 - ID 5032 Dew point is defined as (1) the temperature to which moist air must be cooled to become saturated at a given pressure (2) the lowest temperature to which air must be cooled in order to reduce the relative humidity (3) the temperature below which the change of state in a given volume of air will result in the absorption of latent heat (4) the lowest temperature at which evaporation will occur for a given pressure ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 659 - ID 1232 A high pressure area (slack pressure gradient) covers part of the Mediterranean Sea and coastal region during the summer. What surface wind direction is likely at an airport at the coast on a sunny afternoon? (1) Land to sea. (2) Sea to land. (3) Variable. (4) Parallel to the coastline. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 660 - ID 2043 During July flights from Bangkok (13*N - 10CTE) to Karachi (25*N - 67*E) experience an average tailwind component of 22 kt. In January the same flights, also operating at FL 370, have an average headwind of 50 kt. What is the reason for this difference? (1) The flights during the summer encountered, by chance, very unusual, favourable conditions. (2) The wind components correspond to the seasonal change of the regional wind system. (3) The flights happen to be in the area of the polar front jet stream. (4) The flights in January encountered, by chance, very unusual, adverse wind conditions. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 661 - ID 1275 Which one of the following statements regarding the intertropical convergence zone (ITCZ) is correct? (1) The ITCZ does not change its position during the course of the year. (2) Thunderstorms seldom occur within the area of the ITCZ. (3) Frequent and widespread thunderstorms are to be expected within the area of the ITCZ. (4) The ITCZ is always associated with a strong jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 662 - ID 4124 Fallstreaks or virga are (1) strong downdraughts in the polar jet stream, associated with jet streaks (2) water or ice particles falling out of a cloud that evaporate before reaching the ground (3) strong katabatic winds in mountainous areas and accompanied by heavy precipitation (4) gusts associated with a well developed Bora ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 663 - ID 1689 The front labelled "Z" is a: (1) Cold occlusion (2) Cold front (3) Warm occlusion (4) Warm front

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 664 - ID 1217 What are the characteristics of cumuliform clouds? (1) Large water droplets, stability, no turbulence, showers and mainly rime ice. (2) Small water droplets, stability, no turbulence and extensive areas of rain. (3) Small water droplets, instability, turbulence, extensive areas of rain and rime ice. (4) Large water droplets, instability, turbulence, showers and mainly clear ice. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 665 - ID 0 A cold air pool (1) normally disappears at night and occurs almost exclusively in summer (2) is usually most evident in the circulation and temperature fields of the middle troposphere and may show little or no sign on a surface chart (3) develops usually in winter when very unstable maritime polar or maritime arctic air currents stream southwards along the eastern side of an extensive ridge of high pressure, in association with occluded systems (4) occurs frequently in winter to the south of the Alps when this region is under the influence of cold north-westerly airstream ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 666 - ID 4164 A layer is absolutely unstable if the temperature decrease with height is (1) 0.65°C per 100m (2) between 1°C per 100m and 0.65°C per 100m (3) more than 1°C per 100m (4) less than 0.65°C per 100m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 667 - ID 2538 Which of the following is true of a land breeze? (1) It blows by day (2) It blows from water to land (3) It blows only at noon (4) It blows from land to water ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 668 - ID 1204 The relative humidity of a sample air mass is 50%. How is the relative humidity of this air mass influenced by changes of the amount of water vapour in it? (1) It is not influenced by changing water vapour. (2) It decreases with increasing water vapour. (3) It increases with increasing water vapour. (4) It is only influenced by temperature. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 669 - ID 10960 Which cloud type may indicate the presence of severe turbulence ? (1) Cirrocumulus (2) Altocumulus lenticularis (3) Stratocumulus (4) Nimbostratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 670 - ID 2563 What are the images of satellites provided daily by the Weather Service used for? (1) To measure wind currents on the ground (2) To locate fronts in areas with few observation stations (3) To help provide 14-day forecasts (4) To locate precipitation zones ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 671 - ID 12844 On an upper wind and temperature chart: (1) the wind increases from south to north. (2) the pressure is constant all over the chart. (3) the height is constant all over the chart. (4) the temperature is constant all over the chart. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 672 - ID 4172 Which of the following is true concerning an aircraft that is flying at FL180 in the northern hemisphere, where wind is geostrophic and the true altitude remains constant ? (1) There is no cross wind (2) There is a cross wind from the left (3) There is a cross wind from the right (4) Without knowing temperature at FL 180 this question can not be answered ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 673 - ID 10970 Which of the following types of cloud can extend over the low, medium and high cloud levels ? (1) AC (2) CI (3) ST (4) CB ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 674 - ID 5537 Before landing, an altimeter set to QFE indicates (1) the aircraft's altitude above the mean sea level. (2) the flight level. (3) the height of the aircraft's wheels above the runway. (4) in standard atmosphere, the height of the aircraft above the official airport elevation. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 675 - ID 2513 An aircraft is descending to land under IFR. If the local QNH is 1009 hPa, what will happen to the altitude reading when the altimeter is reset at the transition level ? (1) It will remain the same (2) It will increase (3) It will not be affected (4) It will decrease ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 676 - ID 10981 You are flying in the northern hemisphere at 2000 FT over a flat country area. An anticyclone is ahead of you and a depression is behind you. The wind affecting you, will be (1) from your right (2) from your left (3) from behind (4) from ahead ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 677 - ID 456 Which of the following statements is true regarding moderate to severe airframe icing? (1) It always occurs in altostratus cloud (2) It will occur in the anvil part of the cumulonimbus cloud (3) It will not occur in clear-sky conditions (4) It is unlikely to occur in nimbostratus cloud ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 678 - ID 1564 Which jet stream blows all year round, over the northern hemisphere? (1) The equatorial jet stream. (2) The arctic jet stream. (3) The subtropical jet stream. (4) The polar night jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 679 - ID 1777 An airborne weather radar installation makes it possible to detect the location of (1) all clouds (2) zones of precipitation, particularly liquid-state precipitation, and also their intensity (3) stratocumulus and its vertical development (4) cumulonimbus, but provided that cloud of this type is accompanied by falls of hail ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 680 - ID 1214 Which of the following zones is most likely to encounter little or no precipitation? (1) The north side of the alps with a prevailing Foehn from the south. (2) The north side of the alps with a prevailing Foehn from the north. (3) Occlusions. (4) Frontal zones. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 681 - ID 2515 During the climb after take-off„ the altimeter setting is adjusted at the transition altitude. If the local QNH is 966 hPa, what will happen to the altimeter reading during the resetting procedure? (1) It will increase (2) It will remain the same (3) It will decrease (4) It is not possible to give a definitive answer ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 682 - ID 3486 Which one of the following statements concerning the formation of aircraft icing is most correct ? (1) A cloud consisting of both supercooled water droplets and ice crystals produces aircraft icing (2) Probability of icing increases when dry snow starts to fall from a cloud. (3) Greatest risk of icing conditions is experienced in cirrus clouds. (4) Risk for icing increases when cloud temperature decreases well below minus 12 degrees C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 683 - ID 1287 What surface weather is associated with a stationary high pressure region over land in the winter? (1) A tendency for fog and low ST. (2) Thunderstorms. (3) The possibility of snow showers. (4) NS with continuous rain. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 684 - ID 2574 If you are planning a flight at FL 170, which of these upper wind and temperature charts would be nearest your flight level ? (1) 700 hPa (2) 850 hPa (3) 500 hPa (4) 300 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 685 - ID 10334 For both saturated and unsaturated air instability will occur when the (1) environmental lapse rate is less than both dry adiabatic lapse rate and saturated adiabatic lapse rate (2) dry adiabatic lapse rate is less than saturated adiabatic lapse rate but greater than environmental lapse rate (3) environmental lapse rate is greater than saturated adiabatic lapse rate but less than dry adiabatic lapse rate (4) environmental lapse rate is greater than both dry adiabatic lapse rate and saturated adiabatic lapse rate ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 686 - ID 67 Which of the following is a common cause of ground or surface temperature inversion ? (1) Warm air being lifted rapidly aloft, in the vicinity of mountainous terrain. (2) Heating of the air by subsidence (3) Terrestrial radiation on a clear night with no or very light winds. (4) The movement of warm air under cold air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 687 - ID 5031 Which one of the following local winds is a Foehn wind? (1) Bora (2) Chinook (3) Scirocco (4) Harmattan ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 688 - ID 12864 What visibility is most likely to be experienced during an approach into Madrid at 2300 UTC ? TAF LEMD 281200Z 281812 13005KT CAVOK TEMPO 1821 8000 SCT020 SCT030 BECMG 2123 21005KT9999 SCT015 BKN080 PROB40 TEMPO 2306 6000 SCT008 (1) 10 kilometres or more (2) 6000 metres (3) Greater than 10 kilometres (4) 8000 metres ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 689 - ID 2335 What type of fog is most likely to form over flat land during a clear night, with calm or light wind conditions ? (1) Orographic. (2) Advection. (3) Radiation. (4) Steam. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 690 - ID 4122 In which stage of the life cycle of a single thunderstorm cell occur both up- and downdrafts simultaneously? (1) Cumulus stage (2) Dissipating stage (3) Mature stage (4) In all stages ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 691 - ID 13635 At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude? (1) At a temperature greater than or equal to that of the ISA and where the QNH is greater than or equal to 1013.25 hPa (2) In a cold low pressure region (3) At a temperature less than or equal to that of the ISA and where the QNH is less than 1013.25 hPa (4) In a very cold area with a QNH of 1015 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 692 - ID 4036 A super-cooled droplet is (1) a water droplet that is mainly frozen (2) a water droplet that has been frozen during its descent (3) a droplet still in liquid state at a temperature below CTC (4) a small particle of water at a temperature below -5CTC ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 693 - ID 2131 What characterizes a stationary front ? (1) The warm air moves at approximately half the speed of the cold air (2) The surface wind usually has its direction perpendicular to the front (3) The weather conditions that it originates is a combination between those of an intense cold front and those of a warm and very active front (4) The surface wind usually has its direction parallel to the front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 694 - ID 13568 The weather most likely to be experienced near to position "A" is (1) frequent showers of rain and snow, good visibility outside precipitation (2) overcast layer cloud - rain later (3) advection fog and drizzle (4) clear skies - radiation fog at night

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 695 - ID 13630 What is necessary for the development of a polar front jet stream? (1) A uniform pressure pattern. (2) An unstable atmosphere up to great heights. (3) Strong vertical temperature gradients. (4) Strong horizontal temperature gradients. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 696 - ID 1091 The geostrophic wind is less than the gradient wind around an anticyclone because the (1) centrifugal force is added to the pressure gradient (2) effect of coriolis is added to friction (3) coriolis effect opposes the centrifugal force (4) centrifugal force opposes the pressure gradient ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 697 - ID 1225 What characteristics will the surface winds have in an area where the isobars on the weather map are very close together? (1) Strong and flowing somewhat across the isobars. (2) Very weak but gusty and flowing somewhat across the isobars. (3) Strong and flowing parallel to the isobars. (4) Moderate and flowing parallel to the isobars. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 698 - ID 13647 In the METAR code the abbreviation VCBLDU means: (1) blowing dust in the vicinity. (2) an active duststorm. (3) an active dust- and sandstorm.

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(4) an active sandstorm. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 699 - ID 61 What is the dry adiabatic lapse rate ? (1) 1J°C/1000FT (2) 3.5°C/1000FT (3) 3.0°C/1000FT (4) 2.0°C/1000FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 700 - ID 13638 During the passage of a front in the northern hemisphere the wind veers. This statement is: (1) only true for the passage of a cold front. (2) only true for the passage of a warm front. (3) true. (4) not true. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 701 - ID 10349 A wind of 20 knots corresponds to an approximate speed of (1) 40 m/sec (2) 50 km/h (3) 10 km/h (4) 10 m/sec ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 702 - ID 1277 What weather conditions are indications of the summer monsoon in India? (1) Stratus clouds and drizzle. (2) Fog. (3) Sandstorms. (4) Thunderstorms, showers of heavy rain. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 703 - ID 2545 Which of the following types of cloud can extend over the low, medium and high cloud levels ? (1) CB (2) CI (3) ST (4) AC ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 704 - ID 0 Convective clouds are formed (1) in unstable atmosphere (2) in mid-latitudes only (3) in stable atmosphere (4) in summer during the day only ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 705 - ID 13661 An air mass acquires its basic properties (1) by stagnation of the air for a long period of time over areas having particular characteristics (2) in the westerlies of the mid-latitudes (3) by the influence of jet streams (4) by widespread thunderstorms ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 706 - ID 1682 In what height range and at what intensity could you encounter turbulence in CAT area n*2? (1) From FL 250 to FL 320, moderate (2) From FL 240 to FL 370, light (3) From FL220to FL400, moderate (4) From below FL 130 to FL 270, light

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 707 - ID 4133 The decrease in temperature, per 100 metres, in a saturated rising parcel of air at lower level of the atmosphere is approximately (1) re (2) 1.5°C (3) 0.35°C (4) 0.6°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 708 - ID 1609 Where, during a flight from Marseille to Dakar, in July, may the ITCZ be encountered?

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(1) Near the Canary Islands (2) At the latitudes of Gibraltar (3) In the vicinity of Dakar (4) At the latitudes of Algeria ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 709 - ID 4149 An air mass is stable when (1) temperature in a given area drops off very rapidly with height (2) lifted air returns to its original level (3) the lapse rate is TC per 100 m (4) pressure is constant ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 710 - ID 1780 Extensive cloud and precipitation is often associated with a non frontal thermal depression because of: (1) surface divergence and upper level convergence causing widespread descent of air in the depression (2) surface convergence and upper level divergence causing widespread ascent of air in the depression (3) surface divergence and upper level convergence causing widespread ascent of air in the depression (4) surface convergence and upper level divergence causing widespread descent of air in the depression ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 711 - ID 5022 When, if at all, is a tropical revolving storm most likely to affect Darwin, on the central north coast of Australia? (1) Not experienced at Darwin (2) August to October (3) May to July (4) December to April ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 712 - ID 2048 Atmospheric soundings give the following temperature profile: 3000 FT+15°C 6000 FT+8°C 10000 FT+rC 14000 F T-6°C 18000 FT-14°C 24000 FT-26*C At which of the following flight levels is the risk for aircraft icing, in cloud, greatest? (1) FL220 (2) FL180 (3) FL80 (4) FL150 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 713 - ID 1195 What is the boundary layer between troposphere and stratosphere called? (1) Tropopause. (2) Ionosphere. (3) Stratosphere. (4) Atmosphere. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 714 - ID 10862 An aircraft maintains a constant indicated altitude of 6500 FT from A (600 FT/AMSL - QNH 1012 hPa) to B (930 FT/AMSL- ONH 977 hPa). Assuming that the altimeter subscale setting remains unchanged at 1012 hPa, the actual height of the aircraft above the surface at B will be (1) 5555 FT (2) 4625 FT (3) 6515 FT (4) 5225 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 715 - ID 1249 Which weather condition lowers true altitude as compared to pressure altitude to a position where flight over mountains could be dangerous?

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(1) Warm depression. (2) Warm high. (3) Cold high. (4) Cold low. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 716 - ID 1598 What type of precipitation would you expect at an active unstable cold front? (1) Showers associated with thunderstorms (2) Freezing rain (3) Drizzle (4) Light to moderate continuous rain ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 717 - ID 10339 Ice accretion to the airframe is likely to be most hazardous at temperatures (1) between 0°C and -23°C in large CU (2) below-40°C in CB (3) between 0°C and -17°C in AS (4) between 0°C and-17°C in ST ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 718 - ID 10867 Assuming that an initial "trigger" force is present, the conditions most likely to result in the formation of thunderstorms are (1) rapid orographic cooling of cloud containing ice crystals (2) high surface temperature, low dew point and high dry adiabatic lapse rate (3) intense surface heating, anticyclonic pressure system and relatively high freezing level (4) high relative humidity and instability throughout a deep layer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 719 - ID 2551 Which of the following is most likely to lead to the formation of radiation fog? (1) The passage of fronts (2) Dry, warm air passing over warm ground (3) Cold air passing over warm ground (4) Heat loss from the ground on clear nights ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 720 - ID 4110 During the life cycle of a thunderstorm, which stage is characterized predominantly by downdrafts? (1) Dissipating stage (2) Tornado stage (3) Mature stage (4) Initial stage ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 721 - ID 1262 Which of the following weather conditions favour the formation of radiation fog? (1) Light wind, extensive cloud, moist air. (2) Light wind, extensive cloud, dry air. (3) Light wind, little or no cloud, moist air. (4) Strong wind, little or no cloud, moist air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 722 - ID 10922 The length, width and height of a typical mid-latitude jet stream are respectively (1) 1000 nautical miles, 150 nautical miles, 30000 feet

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(2) 1000 nautical miles, 5000 to 8000 feet, 30000 feet (3) 200 nautical miles, 5 nautical miles, 18000 feet (4) 1000 nautical miles, 150 nautical miles, 18000 feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 723 - ID 1284 How do you recognize a cold air pool? (1) A cold air pool may only be recognized on the surface chart as a low pressure area. (2) As a low pressure area aloft (e.g. on the 500 hPa chart). (3) As a high pressure area aloft (e.g. on the 500 hPa chart). (4) A cold air pool may only be recognized on the surface chart as a high pressure area. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 724 - ID 2704 If you are flying from Zurich to Shannon at FL 340, where will your cruising altitude be? (1) Constantly in the troposphere (2) In the stratosphere for part of time (3) Constantly in the stratosphere (4) First in the troposphere and later in the stratosphere ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 725 - ID 10920 The Hurricane season is mainly from (1) April until July. (2) October until January. (3) July until November. (4) January until April. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 726 - ID 13570 For an aircraft making an approach to an airfield located in square 3B, the most likely weather conditions are (1) low cloud, mist (2) moderate continuous rain (3) showers of rain and hail (4) scattered AC base 2000 FT, good visibility

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 727 - ID 5541 What type of clouds are associated with snow showers ? (1) Alto stratus and stratus (2) Nimbostratus (3) Cumulus and cumulonimbus (4) Cumulus and altostratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 728 - ID 4022 In a layer of air the decrease in temperature per 100 metres increase in height is more than 1°C. This layer can be described as being (1) conditionally unstable (2) absolutely stable (3) conditionally stable (4) absolutely unstable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 729 - ID 4086 When the temperature and dew point are less than one degree apart the weather conditions are most likely to be (1) unlimited visibility (2) high scattered clouds (3) clear and cool (4) fog or low cloud ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 730 - ID 12840 Relative humidity (1) is higher in warm air than in cool air (2) increases if the air is cooled whilst maintaining the vapour pressure constant (3) decreases if the air is cooled whilst maintaining the vapour pressure constant

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(4) is higher in cool air than in warm air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 731 - ID 1783 Going from the equator to the north pole, the altitude of the tropopause (1) increases and its temperature increases (2) increases and its temperature decreases (3) decreases and its temperature increases (4) decreases and its temperature decreases ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 732 - ID 2178 Refer to TAF below.; EGBB 261812 28015G25KT 9999 SCT025 TEMPO 1822 29018G35KT 5000 SHRASN BKN010CB PROB30 TEMPO 1821 1500 TSGR BKN008CB BECMG 2124 26010KT; From the TAF above you can assume that visibility at 2055Z in Birmingham (EGBB) will be : (1) a maximum 5 km. (2) not less than 1,5 km but could be in excess of 10 km. (3) more than 10 km (4) a minimum of 1,5 km and a maximum of 5 km. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 733 - ID 13797 Which of the following statements is an interpretation of the METAR ? 00000KT 0200 R14/0800U R16/P1500U FZFG W001 m03/m03 Q1022 BECMG 0800 = (1) Visibility for runway 14 800 metres, fog with hoarfrost, RVR for runway 16 more than 1500 metres (2) RVR for runway 14 800 metres, vertical visibility 100 feet, calm, visibility improving to 800 metres in the next 2 hours (3) Visibility 200 metres, RVR for runway 16 1500 metres, temperature -3°C, vertical visibility 100 metres (4) Visibility 200 feet, RVR for runway 16 more than 1500 metres, vertical visibility 100 feet, fog with hoarfrost ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 734 - ID 1103 What is the approximate composition of the dry air by volume in the troposphere ? (1) 50 % oxygen, 40 % nitrogen, and the rest other gasses (2) 21 % oxygen, 78 % nitrogen, and the rest other gasses (3) 88 % oxygen, 9 % nitrogen, and the rest other gasses (4) 10 % oxygen, 89 % nitrogen, and the rest other gasses ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 735 - ID 1696 What is the speed of the front located over France ? (1) 30 kt (2) 10 kt (3) 25 kt (4) 15 kt

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 736 - ID 10394 In an intense trough of low pressure over Iceland during wintertime the weather likely to be experienced is: (1) strong wind with subsidence at low levels (2) light wind, good visibility and a high cloud ceiling (3) strong wind associated with an almost clear sky (4) strong wind shear, convection and snow showers ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 737 - ID 0 Runway Visual Range (RVR) is (1) reported when visibility is less than 2000m (2) usually better than visibility (3) reported in AIRMET and METAR (4) measured with ceilometers alongside the runway ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 738 - ID 2041 In which month does the humid monsoon in India start? (1) In October. (2) In December. (3) In March. (4) In June. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 739 - ID 1558 Rime ice forms through the freezing onto aircraft surfaces of (1) small supercooled water drops. (2) snow. (3) large supercooled water drops. (4) water vapour. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 740 - ID 2255 During a flight over the sea atFL 100 from Marseille (QNH 1012 hPa)to Palma de Mallorca (QNH 1012 hPa), the true altitude is constantly increasing. What action, if any, should be taken ? (1) Compensate by heading further to the left (2) Recheck the QNH because one of the QNH values must be wrong (3) None, the reason for the change is that the air around Palma is warmer than the air around Marseille (4) Have your altimeter checked, because its readings are obviously wrong ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 741 - ID 10930 You are flying at FL 340 (250 hPa) on the northern hemisphere. The wind is geostrophic and there is a cross wind from the right all the time. Your true altitude will (1) decrease, only if the pressure at the surface is decreasing on your route (2) increase, only if the temperature at your flight level is rising on your route (3) increase (4) decrease ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 742 - ID 1627 Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (MSA minus airport elevation equals: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT) (1) LFSB 24008KT 9999 SCT050 18/11 Q1017 RERANOSIG= (2) LSGG 22006KT9999 BKN090 17/15 Q1008 RERANOSIG= (3) LSZB 28012KT 9999 OVC100 16/12 Q1012 BECMG 5000-RA=

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(4) LSZH VRB02KT 9000 BKN080 21/14 Q1022 NOSIG= ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 743 - ID 2339 Thunderstorms reach their greatest intensity during the (1) dissipating stage. (2) mature stage. (3) cumulus stage. (4) period in which precipitation is not falling. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 744 - ID 4145 Clear ice is dangerous because it (1) is heavy and is difficult to remove from the aircraft surfaces (2) is not translucent and forms at the leading edges (3) spreads out and contains many air particles (4) is translucent and only forms at the leading edges ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 745 - ID 1255 Where does polar continental air originate? (1) Polar ice cap. (2) The region of the Azores. (3) The region of the British Isles. (4) Siberian landmass. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 746 - ID 4147 Hoar frost forms on an aircraft as a result of (1) freezing rain striking the aircraft (2) small super-cooled droplets striking the aircraft (3) water vapour turning directly into ice crystals on the aircraft surface (4) droplets forming on the aircraft and then freezing ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 747 - ID 2493 The temperature at FL 80 is +6°C. What will the tempe rature be at FL 130 if the ICAO standard lapse rate is applied ? (1) -6°C (2) o°c (3) +2°C (4) -4°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 748 - ID 4158 In order to reduce QFE to ONH, which of the following item(s) must be known ? (1) Elevation of the airfield (2) Elevation of the airfield and the temperature at MSL (3) Elevation of the airfield and the temperature at the airfield (4) Temperature at the airfield ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 749 - ID 5006 Assuming a generalised zonal system of world climatic and wind circulation, zone "y" is an area of (1) NE trade winds (2) SE trade winds (3) subtropical high pressure systems (4) travelling low pressure systems

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 750 - ID 223 At what time of the year, are the paths of north Atlantic lows moving from west to east generally at their most southerly position? (1) Summer. (2) Autumn. (3) Spring. (4) Winter. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 751 - ID 13807 Which of the four answers is a correct interpretation of data from the following METAR ? LSZH 050820Z 16003KT 0400 R14/P1500 R16/1000 FZFG W003 M02/M02 Q1026 BECMG 2000 BR = (1) RVR for runway 14 1500 m, visibility 400 m, QNH 1026 hPa, wind 160° at 3 kt. (2) RVR for runway 16 1000 m with no distinct tendency, visibility increasing in the next 2 hours to 2000 m, vertical visibility 300 m, temperature-2°C. (3) Visibility 400 m, RVR for runway 16 1000 m with no distinct tendency, dew point -2*C, freezing fog. (4) Visibility 1000 m, RVR 400 m, freezing level at 300 m, variable winds, temperature 2°C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 752 - ID 4063 The sea breeze is a wind from the sea (1) blowing at night in mid-latitudes (2) occurring only in mid-latitudes and in daytime (3) occurring only in the lower layers of the atmosphere in daytime (4) that reaches up to the tropopause in daytime ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 753 - ID 13641 At the surface the lifetime of a typical microburst and the diameter of the area affected by damaging winds are in the order of

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(1) 30-40 minutes and 4 km (2) 5-15 minutes and 8 km (3) 5-10 minutes and 12 km (4) 1-5 minutes and 4 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 754 - ID 1201 The polar front is the boundary between: (1) polar air and tropical air. (2) arctic air and polar air. (3) arctic air and tropical air. (4) maritime polar air and continental polar air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 755 - ID 13818 Which of the following statements concerning the tropopause is correct? (1) The temperature lapse rate changes abruptly at the tropopause. (2) The temperature of the tropopause at the equator and at the poles is equal. (3) The temperature of the tropopause at the equator is higher than at the poles. (4) The temperature remains constant above and below the tropopause. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 756 - ID 10964 Which of the following sets of conditions are most favourable to the development of thunderstorms? (1) Environmental lapse rate less than dry adiabatic lapse rate with freezing level below the cloud base, high relative humidity and strong surface winds (2) Extensive isothermal layer, ice particles and water droplets must exist just below the freezing level and orographic lifting (3) Environmental lapse rate greater than saturated adiabatic lapse rate through a great vertical extent, high relative humidity and an initial lifting process (4) Environmental lapse rate less than saturated adiabatic lapse rate with dew point below CTC and considerable surface heating ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 757 - ID 10907 On the Significant Weather Chart, we see the following indications:; SCT CU100/060; The forecast charts for FL 050 and FL 100 both indicate a wind from 320715 kt. In flight at FL 055 over an area of plains (flat country) during the validity period of the Significant Weather Chart, we observe moderate turbulence. This turbulence is caused by (1) system waves. (2) the surface radiation. (3) a wind shear. (4) the instability of the air mass between the surface and the top of Cumulus clouds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 758 - ID 12855 What is the lowest visibility forecast for Bangkok at ETA 1400 UTC ? TAF VTBD 271800Z 280024 VRB05KT 1200 BR TEMPO 0002 4000 BECMG 0205 9999 SCT015 BKN100 TEMPO 1118 04010G20KT 5000 TSRASCT009 BKN014 BKN018CB BECMG 2024 6000= (1) 10 km or more (2) 5 km (3) 6 km (4) 1200 metres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 759 - ID 10957 When visibility is reduced by water droplets to less than 1000 metres it is classified as (1) haze (2) mist (3) fog (4) dust fog ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 760 - ID 12829 Which statement is correct for microbursts ? (1) They occur in the tropics only (2) The diameter of the affected area on the surface does not exceed 4 km (3) They only develop below convective clouds with heavy rain (4) Their downdraft is warmer than the surroundings ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 761 - ID 455 Which of the following statements is true regarding moderate to severe airframe icing? (1) It is likely to occur in nimbostratus cloud (2) It may occur in the uppermost levels of a cumulonimbus capillatus formation (3) It will occur in clear-sky conditions (4) It always occurs in altostratus cloud ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 762 - ID 1595 In which of the following regions does maritime polar air originate? (1) Baltic Sea (2) Black Sea (3) Region of British Isles (4) East of Greenland ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 763 - ID 2243 The QNH at an airfield located 200 metres above sea level is 1022 hPa. The air temperature is not available. What is the QFF? (1) It is not possible to give a definitive answer (2) More than 1022 hPa (3) 1022 hPa (4) Less than 1022 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 764 - ID 2601 Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (1) 24009KT 6000 RA SCT010 OVC030 12/11 Q1007 TEMPO 4000 = (2) 15003KT9999BKN100 17/11 O1024NOSIG = (3) 04012G26KT 9999 BKN030 11/07 Q1024 NOSIG = (4) 29010KT 9999 SCT045TCU 16/12 Q1015 RESHRA NOSIG = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 765 - ID 1288 On which of the following aviation weather charts can a pilot most easily find a Jetstream? (1) Wind / temperature chart. (2) Surface chart. (3) Significant weather chart. (4) Upper air chart. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 766 - ID 4202 For a given airfield the QFE is 980 hPa and the QNH is 1000 hPa. The approximate elevation of the airfield is (1) 600 metres (2) 540 metres (3) 160 metres (4) 120 metres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 767 - ID 1546 What information is required to convert a minimum safe altitude into a lowest usable flight level?

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(1) Highest value of ONH and the highest negative temperature deviation from ISA. (2) Lowest value of QNH and the highest negative temperature deviation from ISA. (3) Highest value of ONH and the highest positive temperature deviation from ISA (4) Lowest value of QNH and the lowest negative temperature deviation from ISA ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 768 - ID 1703 What OAT would you expect at FL 200 over Geneva ? (1) -20°C (2) -28°C (3) -24°C (4) -i6°e x -24°C

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 769 - ID 66 If atmospheric conditions exist such that the temperature deviation is ISA +1CTC in the lower troposphere up to 18000 FT, what is the actual layer thickness between FL 60 and FL 120 ? (1) 5900 FT. (2) 6000 FT. (3) 6240 FT. (4) 5760 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 770 - ID 1617 In general, the visibility during rainfall compared to during drizzle is (1) less (2) greater (3) in rain - below 1 km, in drizzle - more than 2 km (4) the same ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 771 - ID 2582

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Which of the following best describes Zone C? (1) Trough of low pressure (2) Col (3) Depression (4) ridge of high pressure ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 772 - ID 1251 What degree of turbulence, if any, is likely to be encountered while flying through a cold front in the summer over Central Europe at FL 100? (1) Severe turbulence in CB cloud. (2) Light turbulence in ST cloud. (3) Light turbulence in CB cloud. (4) Moderate turbulence in NS cloud. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 773 - ID 1252 You are flying at 2 500 FT/AGL, the wind is 180°, an d intend to land at an airport, at sea level directly below. From approximately which direction would you expect the surface wind (mid-latitude, northern hemisphere)? (1) South-southwest. (2) South-southeast. (3) South. (4) Southwest. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 774 - ID 2594 Which of the following phenomena can produce a risk of aquaplaning? (1) +RA (2) BCFG (3) FG (4) SA ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 775 - ID 13649 In the northern hemisphere advection of warm air aloft indicates: (1) the approach of a warm occlusion. (2) the formation of advection fog. (3) backing winds with increasing heights. (4) increasing probability for showers. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 776 - ID 2564 At what degree of icing should ICAO's "Change course and/or altitude immediately" instruction be followed? (1) Extreme (2) Moderate (3) Severe (4) Light ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 777 - ID 1701 Over Amsterdam, what amount and general type of cloud would you expect at FL 160 ? (1) Mainly 5 to 8 oktas of stratiform cloud in layers (2) 4 oktas broken cumulus (3) 5 to 7 oktas towering cumuliform cloud and with moderate turbulence (4) Isolated cumulonimbus only

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 778 - ID 3739 Subsidence is: (1) vertically downwards motion of air (2) vertically upwards motion of air (3) horizontal motion of air (4) the same as convection ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 779 - ID 1218 Which of the following types of clouds are evidence of unstable air conditions? (1) CU.CB. (2) CI.SC. (3) ST, CS. (4) SC.NS. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 780 - ID 2520 You are flying at FL 200. Outside air temperature is -40*C, and the pressure at sea level is 1033 hPa. What is the true altitude? (1) 19310ft (2) 21770 ft

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(3) 20630 ft (4) 18290 ft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 781 - ID 1223 Which of the following clouds may extend into more than one layer? (1) Cirrus. (2) Stratus. (3) Nimbostratus. (4) Altocumulus. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 782 - ID 4171 Above and below a low level inversion the wind is likely to (1) change significantly in speed and direction (2) change in speed but not in direction (3) change in direction but not in speed (4) experience little or no change in speed and direction ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 783 - ID 4082 A dry, sand- and dust-laden North Easterly wind that blows in winter over large parts of North West Africa is known as a (1) Khamsin (2) Scirocco (3) Harmattan (4) Pampero ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 784 - ID 1553 Which of the following weather reports is a warning of conditions that could be potentially hazardous to aircraft in flight ? (1) SPECI. (2) TAF. (3) ATIS. (4) SIGMET. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 785 - ID 10895 In mid-latitudes, the tops of Cumulus are often limited by (1) the tropopause (2) a radiation inversion (3) a temperature inversion (4) a layer of unstable air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 786 - ID 1278 After passing at right angles through a very active cold front in the direction towards the cold air, what will you encounter at FL 50, in the northern hemisphere immediately after a marked change in temperature? (1) A backing in the wind direction. (2) A veering in the wind direction. (3) An increase in tailwind. (4) A decrease in tailwind. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 787 - ID 236 What winds and air mass characteristics are mainly associated with the winter monsoon in the monsoon regions of the Indian sub-continent? (1) South-easterly winds carrying warm and humid air. (2) North-westerly winds bringing dry and hazy air. (3) South-westerly winds carrying warm and humid air.

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(4) North-easterly winds bringing dry and hazy air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 788 - ID 227 You intend to carry out a VFR flight over the Alps, on a fine and hot summer day. What is the best time of day to conduct this flight? (1) Afternoon. (2) Morning. (3) Early evening. (4) Mid-day. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 789 - ID 2499 The temperature at FL 110 is -5*C. What will the temperature be at FL 50 if the ICAO standard lapse rate is applied ? (1) +3°C (2) -3°C (3) o°c (4) +7°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 790 - ID 4182 Runway visual range can be reported in (1) a METAR (2) aTAF (3) a SIGMET (4) both a TAF and a METAR ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 791 - ID 10974 Which statement about hurricanes in the North Atlantic is correct? (1) They move towards the equator (2) Their eye can be well observed by weather satellites (3) They intensify after landfall (4) They move with a speed of at least 60 kt ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 792 - ID 1365 Which one of the tracks (dashed lines) is represented by the cross-section shown on the left ? (1) Track B-C (2) Track D-A (3) Track C-A (4) Track B-A ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 793 - ID 2591 Which of the following phenomena should be described as precipitation at the time they are observed? (1) +SHSN; (2) BR; (3) MIFG; (4) VA; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 794 - ID 4169 An inversion is (1) a decrease of temperature with height (2) an increase of pressure with height (3) a decrease of pressure with height (4) an increase of temperature with height ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 795 - ID 12863 Which type of air mass never occurs over central Europe ? (1) Equatorial air (2) Tropical air (3) Polar air (4) Arctic air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 796 - ID 4040 Altostratus clouds are classified as (1) low level clouds (2) medium level clouds (3) high level clouds (4) convective clouds ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 797 - ID 1577 What positions are connected by isobars on the surface weather chart? (1) Positions with the same air pressure at a given level (2) Positions with the same relative pressure heights (3) Positions with the same temperature at a given level (4) Positions with the same wind velocity at a given level ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 798 - ID 13665 An occlusion is called a warm occlusion when the cold air (1) at the rear of the occlusion is less cold than the cold air ahead, with the warm air at a higher altitude. (2) at the rear of the occlusion is colder than the cold air ahead, with the warm air at a higher altitude. (3) ahead of the surface position of the occlusion is only at a higher altitude. (4) at the rear of the occlusion is colder than the cold air ahead. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 799 - ID 19 At a certain position, the temperature on the 300 hPa chart is -48*C; according to the tropopause chart, the tropopause is at FL 330. What is the most likely temperature at FL 350 ? (1) -58°C. (2) -50°C. (3) -54°C. (4) -56,5°C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 800 - ID 2536 According to ICAO, which symbol indicates widespread haze ? (1) Symbol b) (2) Symbol d) (3) Symbol c) (4) Symbol a) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 801 - ID 2534 According to ICAO, which symbol indicates severe icing ? (1) Symbol b) (2) Symbol d) (3) Symbol c) (4) Symbol a) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 802 - ID 1550 An aircraft lands at an airport (airport elevation 1240 FT, QNH 1008 hPa). The altimeter is set to 1013 hPa. The altimeter will indicate: (1) 1200 FT. (2) 1375 FT. (3) 1105 FT. (4) 1280 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 803 - ID 14146 An aircraft is flying through the Alps on a warm summer's day. The weather is fine, and there is a high pressure system in the area. During the flight, a mountain is passed at an altitude of its summit. What reading will the aneroid altimeter give, compared to the summif's elevation? (1) There is insufficient information to come to a conclusion; (2) A lower altitude than the elevation of the summit; (3) A higher altitude than the elevation of the summit; (4) The same altitude as the elevation of the summit; ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 804 - ID 13825 Which of the following statements is correct? (1) Airframe icing can occur in clear air (2) Above the tropopause no turbulence occurs (3) Mountain waves are always accompanied by rotor clouds (4) Haze is a reduction of visibility due to the presence of water vapour ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 805 - ID 13609 The slope and speed of a warm front compared to the slope and speed of a cold front is in general: (1) smaller and slower. (2) greater and slower. (3) greater and faster. (4) smaller and faster. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 806 - ID 4261 Which one of the following statements is correct concerning the movement of the ITCZ in the region of West Africa? (1) It reaches its maximum northerly position of 15* - 20° N in July (2) It oscillates during the year between the Equator and 10 degrees North. (3) It reaches its maximum southerly position of 5* S in January (4) It oscillates during the year between 10 degrees North and 10 degrees South. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 807 - ID 13656 Absolute instability is said to exist whenever the environmental lapse rate (1) exceeds the dry adiabatic lapse rate (2) is less than the saturated adiabatic lapse rate (3) is less than the dry adiabatic lapse rate (4) is between the dry and saturated adiabatic lapse rate ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 808 - ID 1985 A wind sounding in the region of a polar front jet stream gives the following windprofile (Northern hemisphere).; 900hPa 220/20kt ; 800hPa 220/25kt ; 700hPa 230/35kt ; 500hPa 260/60kt ; 400hPa 280/85kt; 300hPa 300/1 OOkt; 250hPa 310/120kt; 200hPa 310/80kt; Which system is the jet stream associated with? (1) With a ITCZ. (2) With a warm front. (3) With an easterly wave. (4) With a cold front. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 809 - ID 62 A layer is conditionally unstable if the air (1) is unstable for saturated air and stable for dry air. (2) is unstable for saturated air as well as for dry air. (3) becomes stable by lifting it. (4) is stable for saturated air and unstable for dry air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 810 - ID 2718 The intertropical convergence zone (ITCZ) particularly affects (1) western Africa, at a latitude of 25*N in July. (2) western Africa between 1CTN and 2CTN and the northern coasts of the Arabian sea in July. (3) western Africa, where it is situated between the 1CTN and 3CTN parallels, depending on the time of the year. (4) the Atlantic ocean, between latitudes 1CTN and 3CTN, depending on the time of year. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 811 - ID 3719 The temperature at 10000 FT in the ICAO Standard Atmosphere is: (1) o°c (2) -5°C (3) -35°C (4) -20°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 812 - ID 1316 The QNH of an airport at sea level is 983 hPa and the temperature deviation from ISA is -15°C below FL 10 0. What is the true altitude of FL 100? (1) 11460 ft (2) 10160 ft (3) 8640 ft (4) 9740 ft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 813 - ID 4252 Which of the following factors have the greatest effect on the formation of the various types of ice on an aircraft ? (1) Aircraft speed and curvature of the airfoil (2) Relative humidity inside the cloud (3) Aircraft speed and size of cloud droplets (4) Cloud temperature and droplet size ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 814 - ID 1601 Which of the following describes a warm occlusion? (1) The air mass ahead of the front is drier than the air mass behind the front (2) The coldest air mass is ahead of the original warm front (3) The air mass behind the front is more unstable than the air mass ahead of the front (4) The warmer air mass is ahead of the original warm front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 815 - ID 1555 After landing at an aerodrome (aerodrome elevation 1715 FT), the altimeter indicates an altitude of 1310 FT. The altimeter is set to the pressure value of 1013 hPa. What is the QNH at this aerodrome? (1) 1015 hPa. (2) 998 hPa. (3) 1028 hPa. (4) 1013 hPa. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 816 - ID 10396 In relation to the polar front jet stream, the greatest rate of wind shear is most likely to occur (1) close to the core on the polar side (2) 5000 FT or more above the core (3) well below the core (4) on the tropical side of the core ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 817 - ID 1588 In which of the following conditions is moderate to severe airframe icing most likely to be encountered? (1) In Nimbostratus cloud (2) Below the freezing level in clear air (3) In clear air above the freezing level (4) Within cloud of any type ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 818 - ID 13688 The QNH of an airport at sea level is 983 hPa and the temperature deviation from ISA is -15°C below FL 10 0. What is the true altitude of FL 100? (1) 9740 ft (2) 10160 ft (3) 11460 ft (4) 8640 ft ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 819 - ID 1200 Which of the following is a possible consequence of subsidence? (1) An inversion over a large area with haze, mist. (2) Clear air turbulence at higher altitudes . (3) CB-clouds and thunderstorms over a large area. (4) Wide spread NS and AS clouds and intense precipitation. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 820 - ID 4152 Clear ice forms as a result of (1) ice pellets splattering on the aircraft (2) supercooled water droplets spreading during the freezing process (3) water vapour freezing to the aircraft (4) supercooled droplets freezing on impact ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 821 - ID 1281 What is the likely track for a hurricane in the Caribbean area? (1) West in the earlier stages and later turning north east. (2) West in the earlier stages and later turning south east. (3) East then south. (4) West deep into the USA. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 822 - ID 4074 In a mountain-valley wind circulation, the mountain wind blows (1) during the day up from the valley (2) at night up from the valley (3) at night down from the mountains (4) during the day down from the mountains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 823 - ID 10947 What is the meaning of the expression "FEW"? (1) 1 - 2 oktas. (2) 8 oktas. (3) 3-4 oktas. (4) 5-7 oktas. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 824 - ID 65 The temperature at FL 140 is -12°C. What will the tem perature be at FL 110 if the ICAO standard lapse rate is applied ? (1) -18°C. (2) -9°e. (3) -15°C. (4) -6°e. x -6°C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 825 - ID 4033 A moist but unsaturated parcel of air becomes saturated by (1) moving the parcel to an area with lower pressure and equal temperature (2) moving the parcel to an area with higher pressure and equal temperature (3) lifting the parcel to a higher level (4) lowering the parcel to a lower level ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 826 - ID 10366 An unstable air mass will normally be characterised by (1) poor visibility due to haze at the lower levels (2) stratiform cloud (3) continuous light rain from medium level layer cloud (4) cumuliform cloud and good visibility except in precipitation ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 827 - ID 10905 In a METAR message, the wind group is 23010MPS. This means: (1) Wind from 230* magnetic at 10 miles per hour (2) Wind from 230° magnetic at 20 knots (3) Wind from 230° true at 10 miles per hour (4) Wind from 230° true at 20 knots ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 828 - ID 4163 An aircraft is flying at FL 180 in the northern hemisphere with a crosswind from the left. Which of the following is correct concerning its true altitude ? (1) It decreases (2) It remains constant (3) It increases (4) Without knowing temperatures at FL 180 this question can not be answered. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 829 - ID 4140 The rate of cooling of ascending saturated air is less than the rate of cooling of ascending unsaturated air because: (1) water vapour absorbs the incoming heat from the sun (2) water vapour doesn't cool as rapidly as dry air (3) moist air is heavier than dry air (4) heat is released during the condensation process ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 830 - ID 2516

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An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013,2 hPa. Which of these statements is correct? (1) The true altitude will be higher at B than at A (2) The true altitude will be higher at A than at B (3) Wind speed at A is higher than at B (4) Wind speed at Paris is higher than at B

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 831 - ID 2605 Which of the following statements is an interpretation of the SIGMET ? LGGG SIGMET 3 VALID 121420/121820 LGAT- ATHINAI FIR EMBD TS OBS AND FCST IN W PART MOV E NC = (1) Thunderstorms have formed in the eastern part of the Athens FIR and are slowly moving west (2) Thunderstorms must be expected in the western part of the Athens FIR. The thunderstorm zone is moving east. Intensity is constant (3) The thunderstorms in the Athens FIR are increasing in intensity, but are stationary above the western part of the Athens FIR (4) Athens Airport is closed due to thunderstorms. The thunderstorm zone should be east of Athens by 1820 UTC ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 832 - ID 1677 What is the optimum flight level between Rome and Paris according to the significant weather chart? (1) FL160 (2) FL360 (3) FL220 (4) FL340 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 833 - ID 10363 At about what geographical latitude as average is assumed for the zone of prevailing westerlies? (1) 10°N. (2) 80°N. (3) 50°N. (4) 30°N. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 834 - ID 13588 The typical weather conditions affecting the Darwin area during July are (1) NW monsoon - very wet- proximity of the intertropical convergence zone causes widespread thunderstorm activity (2) NE monsoon - continuous heavy rain but little thunderstorm activity (3) dry season - mainly SE winds - visibility reduced by dust and haze (4) mainly clear skies - advection fog drifting inland with the typical NE wind ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 835 - ID 1683 At what flight level is the jet stream core that is situated over northern Scandinavia ?

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(1) FL280 (2) FL330 (3) FL300 (4) FL360 Please select A, B, C or D from above.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 836 - ID 1227 How does moderate turbulence affect an aircraft? (1) Rapid and somewhat rhythmic bumpiness is experienced without appreciable changes in altitude or attitude. (2) Continued flight in this environment will result in structural damage. (3) Changes in altitude or attitude occur but the aircraft remains in positive control at all times. (4) Large, abrupt changes in altitude or attitude occur but the aircraft may only be out of control momentarily. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 837 - ID 2242 The QNH at an airfield located 200 metres above sea level is 1009 hPa. The air temperature is 10*C lower than a standard atmosphere. What is the QFF? (1) Less than 1009 hPa (2) It is not possible to give a definitive answer (3) 1009 hPa

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(4) More than 1009 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 838 - ID 1269 In which approximate direction does the centre of a non-occluded frontal depression move? (1) In the direction of the isobars ahead of the warm front. (2) In the direction of the sharpest pressure increase. (3) In the direction of the warm sector isobars. (4) In the direction of the isobars behind the cold front. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 839 - ID 1104 How does temperature vary with increasing altitude in the ICAO standard atmosphere below the tropopause? (1) Remains constant (2) At first it increases and higher up it decreases (3) Increases (4) Decreases ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 840 - ID 4166 A layer in which the temperature increases with height is (1) conditionally unstable (2) absolutely unstable (3) neutral (4) absolutely stable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 841 - ID 2171 An aircraft is approaching a cold front from the warm air mass side at FL 270 and experiencing moderate to severe turbulence. A jet stream is forecast to be at FL 310. The shortest way to get out of this turbulence is by: (1) Maintain FL 270 (2) Climbing (3) Turn right (4) Descending ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 842 - ID 4081 A strong, dry and warm downslope wind, produced by prior enforced ascent of air over hills or mountains is known as a (1) Mistral (2) Bora (3) Foehn (4) Scirocco ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 843 - ID 13824 Which of the following statements is correct? (1) HZ is reported only when visibility is reduced to 2000 m or less (2) FG is reported only when visibility is reduced by water droplets or ice crystals to less than 1000 m (3) When BR is reported then the visibility is more than 1000 m but less than 8000 m (4) VC denotes not at the aerodrome but not within 8 nm ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 844 - ID 4170 Below a low level inversion visibility is often (1) very good at night (2) moderate or poor because there is no vertical exchange (3) moderate or poor due to heavy snow showers. (4) very good in the early morning

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 845 - ID 2529 Where are you likely to find the strongest winds close to the ground? (1) At the centre of a high-pressure system (2) At the centre of a low-pressure system (3) In the transition zone between two air masses (4) Where there is little variation in pressure over a large area during the winter months ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 846 - ID 1568 Does the following report make sense? METAR LSZH 182320Z VRB02KT 5000 MIFG 02/02 Q1015 NOSIG (1) The report is nonsense, because it is impossible to observe a visibility of 5 km if shallow fog is reported. (2) The report would never be seen, because shallow fog is not reported when the visibility is more than 2 km. (3) The report is possible, because shallow fog is defined as a thin layer of fog below eye level. (4) The report is not possible, because, with a temperature of 2*C and a dew point of 2*C there must be uniform fog. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 847 - ID 13636 Between which latitudes are you most likely to find the region of travelling low pressure systems during summer? (1) 45° - 70° (2) 10°-15° (3) 15°-25° (4) 25°- 45° ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 848 - ID 1250 In the southern hemisphere what wind effect would you expect when flying from a high pressure area towards a low pressure area at FL 100? (1) Headwind with no drift. (2) Tailwind with no drift. (3) Wind from the left. (4) Wind from the right. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 849 - ID 1603 In which main direction does a polar front depression move? (1) Along the front towards the east (2) Across the front towards the south (3) Across the front towards the north (4) Along the front towards the west ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 850 - ID 4101 A blocking anticyclone in the northern hemisphere is (1) quasi stationary/situated between 5CTN and 70*N/a cold anticyclone (2) a cold anticyclone/steering depressions/situated over Scandinavia (3) situated between 5CTN and 70*N/a cold anticyclone/steering depressions (4) a warm anticyclone/quasi stationary/situated between 5CTN and 7CTN ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 851 - ID 2573 Which constant pressure altitude chart is standard for FL 390? (1) 500 hPa (2) 200 hPa (3) 700 hPa (4) 300 hPa ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 852 - ID 2169 Which of the following conditions would cause the altimeter to indicate a lower altitude than that actually flown ? (1) Air temperature lower than standard. (2) Pressure altitude the same as indicated altitude. (3) Air temperature higher than standard (4) Atmospheric pressure lower than standard ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 853 - ID 1290 Why are indications about the height of the tropopause not essential for flight documentation in the tropics? (1) The meteorological services are unable to provide such a chart. (2) The tropopause is generally well above the flight level actually flown. (3) The tropopause is always at the same height. (4) The temperatures of the tropical tropopause are always very low and therefore not important. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 854 - ID 13644 In an unsaturated layer in the friction layer the air is well mixed by turbulence. The layer remains unsaturated. After some time the vertical temperature profile will (1) always change toward a more stable position. (2) at first coincide with the average dry adiabat and then coincide with the average wet adiabat. (3) correspond to the dry adiabatic lapse rate. (4) coincide with the average wet adiabat in the layer. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 855 - ID 21 Select the true statement concerning isobars and wind flow patterns around high- and low-pressure systems that are shown on a surface weather chart. (1) Isobars connect contour lines of equal temperature. (2) When the isobars are close together, the pressure gradient force is greater and wind velocities are stronger. (3) When the isobars are far apart, crest of standing waves may be marked by stationary lenticular clouds. (4) Surface winds flow perpendicular to the isobars. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 856 - ID 4072 Divergence in the upper air results, near the surface, in (1) falling pressure and likely formation of clouds (2) rising pressure and likely dissipation of clouds (3) falling pressure and likely dissipation of clouds (4) rising pressure and likely formation of clouds ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 857 - ID 13819 Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (MSA minus airport elevation equals: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT) (1) LSZB 28012KT 9999 OVC100 16/12 Q1012 BECMG 5000-RA= (2) LFSB 24008KT 9999 SCT050 18/11 01017 RERANOSIG= (3) LSGG 22006KT9999 BKN090 17/15 01008 RERANOSIG= (4) LSZH VRB02KT 9000 BKN080 21/14 Q1022 NOSIG= ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 858 - ID 13604 The widest precipitation zone occurs usually: (1) ahead of a warm front. (2) in rear of a cold front. (3) ahead of a cold front. (4) in rear of a warm front. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 859 - ID 2709 Which typical weather condition is shown by the design for the area of Central Europe ? (1) Easterly waves (2) Uniform pressure pattern (3) Cutting wind (4) Westerly waves

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 860 - ID 1286 What is the correct term for the descending airflow in a large high pressure area? (1) Convergence. (2) Convection. (3) Subsidence. (4) Advection. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 861 - ID 10343 A stationary observer in the northern hemisphere is situated in front of a depression. The centre of the depression passes from west to east and south of the observer. For this observer the wind (1) initially backs, then veers (2) backs (3) veers (4) initially veers, then backs ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 862 - ID 4050 The height of the lifting condensation level is determined by (1) wet adiabatic lapse rate and dewpoint at the surface (2) temperature at surface and air pressure (3) wind and dewpoint at the surface (4) temperature and dewpoint at the surface ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 863 - ID 4044 Areas of sinking air are generally cloudless because as air sinks it (1) is heated by compression

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(2) reaches warmer layers (3) is heated by expansion (4) loses water vapour ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 864 - ID 12839 Runway Visual Range (RVR) is (1) reported in AIRMET and METAR (2) reported when visibility is less than 2000m (3) measured with ceilometers alongside the runway (4) usually better than visibility ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 865 - ID 1681 You are flying from Munich to Amsterdam. Which of the following flight levels would you choose in order to avoid turbulence and icing? (1) FL180 (2) FL320 (3) FL260 (4) FL140 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 866 - ID 1999 How long from the time of observation is a TREND in a METAR valid? (1) 30 minutes. (2) 9 hours. (3) 2 hours. (4) 1 hour. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 867 - ID 2338 Continuous updraughts occur in a thunderstorm during the (1) dissipating stage. (2) mature stage. (3) initial stage. (4) period in which precipitation is falling. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 868 - ID 4079 The Chinook is a (1) warm and dry wind that forms as air descends on the leeward side of the Rocky Mountains (2) very cold wind with blowing snow (3) downslope wind that occurs particularly at night as air cools along mountain slopes (4) warm anabatic wind up the slopes of snowfields or glaciers ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 869 - ID 1099 In the lower layers of the atmosphere due to friction the wind changes direction towards the low pressure area because: (1) wind speed decreases and therefore coriolis force decreases (2) the pressure gradient increases (3) turbulence is formed and pressure decreases (4) turbulence is formed and pressure increases ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 870 - ID 2603 Which of the following statements is an interpretation of the METAR ? 00000KT 0200 R14/0800U R16/P1500U FZFG W001 m03/m03 Q1022 BECMG 0800 = (1) Visibility for runway 14 800 metres, fog with hoarfrost, RVR for runway 16 more than 1500 metres (2) Visibility 200 feet, RVR for runway 16 more than 1500 metres, vertical visibility 100 feet, fog with hoarfrost

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(3) RVR for runway 14 800 metres, vertical visibility 100 feet, calm, visibility improving to 800 metres in the next 2 hours (4) Visibility 200 metres, RVR for runway 16 1500 metres, temperature -3°C, vertical visibility 100 metres ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 871 - ID 2497 Which layer of the atmosphere contains more than 90 per cent of all water vapour? (1) Upper stratosphere (2) Lower stratosphere (3) Troposphere (4) Ozone layer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 872 - ID 13655 A stationary observer in the northern hemisphere is situated in front of a depression. The centre of the depression passes from west to east and south of the observer. For this observer the wind (1) initially backs, then veers (2) backs (3) initially veers, then backs (4) veers ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 873 - ID 10978 Which type of fog can NOT be formed over water? (1) Arctic smoke (2) Advection fog (3) Radiation fog (4) Frontal fog ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 874 - ID 13622 What characteristics will the surface winds have in an area where the isobars on the weather map are very close together? (1) Strong and flowing parallel to the isobars. (2) Moderate and flowing parallel to the isobars. (3) Very weak but gusty and flowing somewhat across the isobars. (4) Strong and flowing somewhat across the isobars. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 875 - ID 1231 In a land- and sea-breeze circulation the land-breeze blows: (1) during the night and is stronger than the sea-breeze. (2) during the night and is weaker than the sea-breeze. (3) during the day and is weaker than the sea-breeze. (4) during the day and is stronger than the sea-breeze. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 876 - ID 459 Which of the following conditions is most likely to cause airframe icing ? (1) GR (2) SHSN (3) +FZRA (4) PE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 877 - ID 10901 Isotachs are lines joining equal (1) wind speeds (2) horizontal wind speed gradients (3) sea-level pressures

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(4) wind speed lapse rates ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 878 - ID 4088 Advection fog can be formed when (1) warm moist airflows over a colder surface (2) cold moist air flows over a warmer surface (3) warm moist air flows over a warmer surface (4) cold moist airflows over warmer water ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 879 - ID 1686 Select from the map the wind for the route Zurich - London at FL 280. (1) 040 / 60 (2) 160/90 (3) 250 / 80 (4) 220 / 60

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 880 - ID 4185 A SPECI is (1) a warning for special weather phenomena (2) an aviation routine weather report

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(3) an aviation special weather report (4) a forecast for special weather phenomena ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 881 - ID 4143 In still air the temperature decreases at an average of 1.2*C per 100 m increase in altitude. This temperature change is called: (1) normal lapse rate (2) dry adiabatic lapse rate (3) Environmental lapse rate (4) saturated adiabatic lapse rate ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 882 - ID 1694 What is the average temperature at FL 160 between Oslo and Paris ? (1) -25°C (2) -23°C (3) -15°C (4) -i9°e Please select A, B, C or D from above. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 883 - ID 2530 An aircraft flying in the southern hemisphere at 2000 feet, has to turn to the right in order to allow for drift. In which direction, relative to the aircraft, is the centre of low pressure ? (1) Behind. (2) In front. (3) To the left. (4) To the right. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 884 - ID 13652 An air mass is: (1) a large body of air within which the temperature and humidity is uniform in horizontal and vertical planes. (2) a body of air with a volume of not more than thousand cubic kilometres. (3) an extensive body of air within which the temperature and humidity in horizontal planes are practically uniform. (4) a large body of air with temperature and humidity constant in the vertical. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 885 - ID 12834 Which statement concerning the Sirocco is correct? (1) It is a northeasterly wind over the western part of North Africa with much dust and sand. (2) The carried dust and sand does not reach great heights. This is caused by the presence of a trade wind inversion. (3) It blows from southerly directions and can carry dust and sand which may reach Europe. (4) It is formed by a strong increase of air pressure over North Africa. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 886 - ID 2532 Between which latitudes are you most likely to find the region of travelling low pressure systems during summer? (1) 25°- 45° (2) 15°-25° (3) 10°-15° (4) 45° - 70° ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 887 - ID 4051 Cumulus clouds are an indication for (1) up and downdrafts (2) the approach of a warm front (3) stability

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(4) the approach of a cold front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 888 - ID 4048 In an unstable layer there are cumuliform clouds. The vertical extent of these clouds depends on the (1) air pressure at the surface (2) pressure at different levels (3) wind direction (4) thickness of the unstable layer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 889 - ID 2340 The most dangerous form of airframe icing is (1) dry ice. (2) rime ice. (3) clear ice. (4) hoar frost. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 890 - ID 12851 What is true for the water vapour distribution in the layer between the surface and the 500 hPa pressure surface in the tradewind belt? (1) The whole layer is relatively dry. (2) The lower part is relatively dry and the upper part is relatively moist. (3) The whole layer is relatively moist. (4) The lower part is relatively moist and the upper part is relatively dry. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 891 - ID 12804 Where are easterly waves found? (1) In the temperate latitudes. (2) In the region of the subtropical jet stream. (3) Between subtropical high pressure cells and ITCZ. (4) On the poleward side of the subtropical high pressure belt. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 892 - ID 1612 What weather conditions in the region of the Alps would you expect with Foehn from south? (1) Strong north winds on the southern side of the Alps (2) Heavy clear air turbulence on the southern side of the Alps (3) Heavy airframe icing conditions on the northern side of the Alps (4) Clouds, on the southern sides of passes in the Alps ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 893 - ID 1690 What name is given to the jet stream lying over North Africa (B) ? (1) Equatorial jet stream (2) Polar front jet stream (3) Arctic jet stream (4) Sub-tropical jet stream

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 894 - ID 13822 Which of the following statements is correct? (1) The Coriolis force is directed in the same sense at all latitudes (2) In gradient wind the Coriolis force is in balance with the horizontal pressure gradient force and the frictional force (3) At the equator horizontal motions do not induce any horizontal Coriolis force (4) The Coriolis force is inversely proportional to the sine of latitude ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 895 - ID 10336 From summer to winter the polar front jet stream over the North Atlantic moves (1) towards the north and the speed increases (2) towards the north and the speed decreases (3) towards the south and the speed increases (4) towards the south and the speed decreases ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 896 - ID 1616 What is the approximate maximum diameter of a the area affected by damaging winds at the surface caused by a microburst ? (1) 400 m (2) 4 km (3) 20 km (4) 50 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 897 - ID 2707 This chart shows the weather conditions on the ground at 0600 UTC on May 4. Which of the following reports reflects weather development at Geneva Airport? (1) TAF LSGG 040716 05014KT5000 OVC015 BECMG 0810 8000 BKN018 BECMG 1013 05015G30KT 9999 SCT025 = (2) TAF LSGG 040716 VRB03KT 6000 BR SCT020 BECMG 0811 23005KT9999 SCT025TCU PROB 40 TEMPO 1216 34012G30KT 3000 TSRA BKN020CB = (3) TAF LSGG 040716 26012KT 9999 SCT030 BKN080 TEMPO 1013 25020G35KT 3000 TSRA or+SHRA BKN030CB BECMG 1316 VRB02KT 3000 BCFG SCT100 = (4) TAF LSGG 040716 23016KT 8000-RABKN030 OVC070 BECMG 0810 5000 RABKN020 OVC050 TEMPO 3000 +RABKN010 OVC030 BECMG 1215 25014KT8000 SCT030 BKN090 = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 898 - ID 4137 A pilot is warned of severe icing at certain flight levels by information supplied in (1) TAF and METAR (2) SWC and SIGMET (3) TAF and SIGMET (4) METAR and SIGMET ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 899 - ID 1253 What are the typical differences with regard to the temperature and humidity between an air mass with its origin in the Azores and an air mass with its origin over northern Russia ? (1) The air of the Azores is warmer and more humid than the North-Russian air. (2) The air of the Azores is warmer and dryer than the North-Russian air. (3) The North-Russian air is colder and more humid than the air of the Azores. (4) The North-Russian air is warmer and dryer than the air of the Azores. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 900 - ID 1772 An aircraft is flying at FL 80. The local ONH is 1000 hPa. After the second altimeter has been adjusted to the local ONH, the reading will be approximately (1) 8600 FT. (2) 8350 FT. (3) 8000 FT. (4) 7650 FT. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 901 - ID 10961 Which is true of advection fog? (1) It develops slowly and clears fast (2) It can appear suddenly by day or by night (3) It forms when unstable air is adiabatically cooled (4) It usually forms by night and clears by day ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 902 - ID 13699 A blocking anticyclone in the northern hemisphere is (1) a warm anticyclone/quasi stationary/situated between 5CTN and 7CTN

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(2) situated between 5CTN and 70*N/a cold anticyclone/steering depressions (3) a cold anticyclone/steering depressions/situated over Scandinavia (4) quasi stationary/situated between 5CTN and 70*N/a cold anticyclone ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 903 - ID 13666 An unstable air mass is forced to ascend a mountain slope. What type of clouds can be expected? (1) Clouds with considerable vertical development and associated turbulence. (2) Stratiform clouds with a temperature inversion. (3) Stratiform clouds with considerable turbulence. (4) Layer-like clouds with little vertical development. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 904 - ID 4120 With which type of cloud are tornadoes associated ? (1) Cumulus mediocris (2) Stratus (3) Cumulonimbus (4) Nimbostratus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 905 - ID 4159 Which statement is true for hurricanes in the North Atlantic? (1) They intensify rapidly after landfall (2) Their greatest frequency of occurrence is in winter (3) From the earth's surface up to the tropopause the core is warmer than its surroundings (4) The diameter is 50-500 m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 906 - ID 4109 The most hazardous type of cloud that may be encountered on a cross country flight is (1) stratocumulus (2) cumulus (3) Cumulonimbus (4) cirrus ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 907 - ID 12857 What is the lowest probable cloud base forecast for ETA 1700 UTC at Kingston ? TAF MKJP 160000Z 160606 36010KT 9999 FEW025 BECMG 1315 14020G34KTFEW015CB SCT025 PROB30 TEMPO 1520 6000 +SHRASCT010 BKN015CB BECMG 2301 34010KTFEW025= (1) 1500 FT (2) 1000 FT (3) 1500 m (4) 1000 m ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 908 - ID 2176 In addition to a lifting action, what are two other requirements necessary for thunderstorm formation ? (1) Stable conditions and low atmospheric pressure (2) Unstable conditions and high moisture content (3) Stable conditions and high moisture content (4) Unstable conditions and high atmospheric pressure ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 909 - ID 1984 What is the minimum speed for a wind to be classified as a jet stream? (1) 70 kt. (2) 50 kt.

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(3) 100 kt. (4) 60 kt. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 910 - ID 12856 Which thunderstorms generally produce the most severe conditions, such as heavy hail and destructive winds? (1) Nocturnal air mass thunderstorms. (2) Warm front thunderstorms. (3) Daytime air mass thunderstorms. (4) Squall line thunderstorms. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 911 - ID 222 In temperate latitudes what weather conditions may be expected over land during the summer in the centre of a stationary high pressure zone ? (1) NS. (2) CB.TS. (3) Calm winds, haze. (4) TS, SH. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 912 - ID 232 Where is a squall line to be expected? (1) In front of an active cold front. (2) Behind a cold front. (3) At the surface position of a warm front. (4) In front of a cold front occlusion at higher levels. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 913 - ID 10956 When fog is reported, the visibility is below (1) 1 km (2) 3 km (3) 1.5 km (4) 0.8 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 914 - ID 4262 What is the name of the wind or air mass which gives to the main part of India its greatest proportion of precipitation? (1) South-west monsoon. (2) Indian, maritime tropical air mass. (3) South-east trade wind. (4) Winter monsoon. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 915 - ID 1560 What name is given to the jet stream lying across India (A) ? (1) Tropical jet stream. (2) Polar front jet stream. (3) Arctic jet stream. (4) Sub-tropical jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 916 - ID 13660 At which height and at what time of the year can an aircraft be affected by the equatorial jet stream? (1) FL400 during the winter in the northern hemisphere. (2) FL400 during the winter in the southern hemisphere. (3) FL 500 from November to February. (4) FL 500 from June to August.

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 917 - ID 4144 Freezing fog consists of (1) supercooled water droplets (2) ice crystals (3) frozen water droplets (4) frozen minute snow flakes ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 918 - ID 2241 The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10*C lower than a standard atmosphere. What is the QNH? (1) 1016 hPa (2) Less than 1016 hPa (3) More than 1016 hPa (4) It is not possible to give a definitive answer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 919 - ID 0 In the northern hemisphere the gradient wind of a cyclonic pressure distribution is 350/24, over the sea the surface wind would approximate (1) 340/20 (2) 340/28 (3) 030/28 (4) 030/20 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 920 - ID 1102 What conditions are most likely to lead to the formation of hill fog? (1) Humid stable air mass, wind blowing towards the hills. (2) Precipitation which is lifted by the action of moderate winds striking the range (3) Clear skies, calm or light winds, with relatively low humidity (4) High relative humidity and an unstable air mass ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 921 - ID 10909 Over which areas can tropical cyclones occur ? (1) India, Arabic Sea, Atlantic Ocean at 2°S (2) Caribbean Sea, Gulf of Bengal, Indian Ocean east of Madagascar (3) Caribbean Sea, Indian Ocean at 20°S, Pacific Ocea n at 2°N (4) Australia, Gulf of Bengal, Atlantic Ocean at 20°S ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 922 - ID 4139 In the vicinity of industrial areas, smoke is most likely to affect surface visibility when (1) cumulus clouds have developed in the afternoon (2) the surface wind is strong and gusty (3) a rapid moving cold front has just passed the area (4) there is a low level inversion ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 923 - ID 12830 Which statement is correct for an absolutely unstable atmosphere? (1) the dry adiabatic lapse rate is more than 1°C /100 m (2) visibility is good between showers (3) clouds are mainly of the stratiform type (4) the environmental lapse rate is less than 1°C /100 m ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 924 - ID 129 In which layer is most of the atmospheric humidity concentrated ? (1) Stratopause. (2) Troposphere. (3) Stratosphere. (4) Tropopause. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 925 - ID 4087 The morning following a clear, calm night when the temperature has dropped to the dewpoint, is likely to produce (1) good clear weather (2) radiation fog (3) a cold front (4) advection fog ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 926 - ID 2508 Which FL corresponds with the 500 hPa pressure level ? (1) FL160 (2) FL390 (3) FL180 (4) FL100 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 927 - ID 1220 Which one of the displayed cloud forms is representative of altocumulus castellanus? (1) 1. (2) 4. (3) 2. (4) 3.

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 928 - ID 12816 Why do tropical revolving storms tend to develop mostly in the western parts of the tropical oceans? (1) Because they are areas in which there is a strong progressive wind shear with increase of height (2) Because the gulf formation of the coastlines triggers a strong rotary circulation (3) Because there is a maximum of humidity as a result of the trade winds long sea passage (4) Because there is a maximal temperature difference between land mass and sea ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 929 - ID 10857 An aircraft flies into supercooled rain in an area with a temperature below CTC. The type of icing it will most likely encounter is (1) granular frost (2) hoar frost (3) rime ice (4) clear ice ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 930 - ID 3735

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Which of the following statements is true ? (1) ONH can be equal to QFE (2) ONH is always equal to QFE (3) ONH is always lower than QFE (4) ONH is always higher than QFE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 931 - ID 4176 Which of the following statements concerning trade winds is correct? (1) They reach up to the tropopause and are more pronounced over the continents (2) They occur only in the lower part of the troposphere and more pronounced over the oceans (3) They reach up to the tropopause and are more pronounced over the oceans (4) They occur only in the lower part of the troposphere and are more pronounced over the continents ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 932 - ID 4177 In the central part of the Atlantic Ocean between 1CTN and 2CTN the prevailing winds are (1) NE trade winds (2) SE trade winds (3) NE monsoon in winter and SW monsoon in summer (4) SW winds throughout the whole year ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 933 - ID 1206 How, if at all, is the relative humidity of an unsaturated air mass influenced by temperature changes? (1) It is not influenced by temperature changes. (2) It decreases with increasing temperature. (3) It is only influenced by the amount of water vapour. (4) It increases with increasing temperature. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 934 - ID 12845 The air masses that are observed most frequently over western Europe are: (1) polar air and tropical air. (2) arctic air and tropical air. (3) polar air and equatorial air. (4) arctic air and polar air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 935 - ID 1593 How does freezing rain develop? (1) Rain falls through a layer where temperatures are below CTC (2) Through melting of ice crystals (3) Through melting of snow grains (4) Snowfalls through a layer where temperatures are above CTC ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 936 - ID 3741 The diurnal variation in temperature is largest when (1) the sky is overcast and the wind is weak (2) the sky is overcast and the wind is strong (3) the sky is clear and the wind is weak (4) the sky is clear and the wind is strong ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 937 - ID 5536 An isohypse (contour)

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(1) indicates the true altitude of a pressure level (2) indicates the altitude of the zero degree isotherm (3) is the limit between two air masses of different temperature (4) is the longest slope line of a frontal surface ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 938 - ID 4132 The decrease in temperature, per 100 metres, in an unsaturated rising parcel of air is (1) 0.65°C (2) re (3) 2°C (4) 0.5°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 939 - ID 4996 Which is true of the temperature at the tropopause? (1) It is higher in equatorial regions than in polar regions (2) There is no significant difference with change of latitude (3) It is higher in polar regions than in equatorial regions (4) It is highest in mid-latitudes ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 940 - ID 1230 What is the strong relatively cold katabatic wind, blowing down the northern Adriatic coast, mainly during the winter and spring called? (1) Scirocco. (2) Mistral. (3) Bora. (4) Ghibli. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 941 - ID 10854 After a prolonged VMC descent in very cold air, you penetrate a humid air mass. What type of icing will you encounter? (1) Smooth icing (2) Clear ice (3) Hoar frost (4) Rime ice ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 942 - ID 2567 Of the four radio soundings, select the one that indicates low stratus: (1) 3 (2) 2 (3) 4 (4) 1

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 943 - ID 5011 The following statements deal with precipitation, turbulence and icing. Select the list containing the most likely alternatives for NS cloud: (1) Precipitation and icing are usually nil. Turbulence is rarely more than moderate. (2) Precipitation may be snow, sleet or rain. Icing and turbulence are frequently severe. (3) Precipitation is frequently in the form of hail. Icing and turbulence are frequently severe. (4) Precipitation may be snow, sleet or rain. Icing is probable and may range between light and severe. Turbulence is rarely more than moderate. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 944 - ID 12846 What is the lowest visibility forecast for approach into Geneva (ETA 1200 UTC)? TAF LSGG 020900Z 021019 18007KT 9999 SCT020 BKN100 BECMG 1114 8000 RASCT010 OVC020 PROB30 TEMPO 1018 VRB10G25KTTSRASCT005 BKN015CB= (1) 10 km (2) 6NM (3) 8NM

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(4) 8 km ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 945 - ID 4118 A microburst with its damaging winds at the surface (1) has a diameter up to 4 km (2) has a life time of more than 30 minutes (3) is always associated with thunderstorms (4) occurs only in tropical areas ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 946 - ID 2260 An aircraft is flying over the sea at FL 100, with a true altitude of 10000 feet; local ONH is 1003 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying ? (1) There is insufficient information to come to any conclusion (2) It is warmer than ISA (3) It is colder than ISA (4) Its average temperature is about ISA ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 947 - ID 2597 In which of the following METAR reports is the probability of fog formation in the coming night the highest? (1) 201850Z 06018G30KT 5000 -RAOVC010 04/01 O1024NOSIG= (2) 201850Z 15003KT6000 SCT120 05/04 01032 BECMG 1600 BR= (3) 201850Z 25010KT 4000 RABKN012 OVC030 12/10Q1006 TEMPO 1500= (4) 201850Z21003KT8000 SCT250 12/m08 Q1028 NOSIG= ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 948 - ID 3718 The tropopause is lower (1) in summer than winter in moderate latitudes (2) over the North Pole than over the equator (3) over the equator than over the South Pole (4) south of the equator than north of it ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 949 - ID 1364 Which typical weather situation is shown on the weather chart ? (Spacing of the isobars: 5 hPa) (1) Warm south wind condition (Foehn). (2) Cutting wind. (3) Flat pressure pattern. (4) West wind condition. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 950 - ID 10872 Cold air pools (1) can easily be recognized on synoptic surface charts (2) are most evident in the temperature and wind fields of the upper levels (3) only occur at mid-latitudes (4) only occur in winter ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 951 - ID 2539 What does the term TREND signify? (1) It is the actual weather report at an aerodrome and is generally issued at half-hourly intervals (2) It is a landing forecast added to the actual weather report (3) It is a warning of dangerous meteorological conditions (4) It is a flight forecast, issued by the meteorological station several times daily

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 952 - ID 2703 Judging by the chart, on which of these routes can you expect to encounter moderate CAT at FL 300? (1) Madrid - Bordeaux (2) London - Zurich (3) Zurich - Athens (4) Zurich - Stockholm Please select A, B, C or D from above. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 953 - ID 2703 Judging by the chart, on which of these routes can you expect to encounter moderate CAT at FL 300? (1) Madrid - Bordeaux (2) London - Zurich (3) Zurich - Athens (4) Zurich - Stockholm ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 954 - ID 2044 What jet streams are likely to be crossed during a flight from Stockholm to Rio de Janeiro (23*S) at FL 350 in July ? (1) A subtropical jet stream followed by a polar front jet stream. (2) A polar front jet stream followed by one or two subtropical jet streams. (3) One subtropical jet stream. (4) A polar front jet stream followed by a subtropical jet stream and later, a second polar front jet stream. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 955 - ID 10870 Between mean sea level and a height of 20 km, the lowest temperature in the ICAO Standard Atmosphere (ISA) is: (1) -100°C (2) -56.5°C (3) -44.7°C (4) -273°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 956 - ID 4065 In an area of converging air in low level (1) clouds can be formed (2) stratified clouds can be dissolved (3) convective clouds can be dissolved (4) clouds can not be formed ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 957 - ID 1212 Which of the following are favourable conditions for the formation of freezing rain? (1) Water droplets falling from cold air aloft with a temperature below CTC into air with a temperature above CTC. (2) Cold air aloft from which hail is falling into air that is warm. (3) An isothermal layer aloft with a temperature just above CTC through which rain is falling. (4) Warm air aloft from which rain is falling into air with a temperature below CTC. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 958 - ID 41 The stable layer at some height in the low troposphere of an older high pressure area in the mid-latitudes is called (1) radiation inversion (2) subsidence inversion (3) friction inversion (4) trade wind inversion ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 959 - ID 1678 Flight Zurich to Rome, ETD 1600 UTC, ETA 1800 UTC. At what flight level would you first expect to encounter clear air turbulence on the climb out from Zurich? (1) FL160 (2) FL140 (3) FL320 (4) FL220

---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 960 - ID 13612 The presence of ice pellets at the surface is the evidence that: (1) after take-offyou can climb to a higher altitude without encountering more than light icing conditions. (2) there are thunderstorms in the area. (3) a cold front has passed. (4) temperatures are above freezing at some higher altitudes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 961 - ID 4160 Assume that an aircraft is flying in the northern hemisphere at the 500 hPa pressure surface on a heading of 270 degrees. Which of the following statements is correct?

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(1) If in this pressure surface the wind comes from the direction 090 degrees, then true altitude is increasing (2) If in this pressure surface the wind comes from the direction 270 degrees, then true altitude is increasing (3) If in this pressure surface the wind comes from the direction 180 degrees, then true altitude is increasing (4) If in this pressure surface the wind comes from the direction 360 degrees, then true altitude is increasing ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 962 - ID 10966 Which of the following statements concerning the variation in wind speed between summer and winter on the North Atlantic between FL 300 and FL 400 is most correct? (1) The average westerly component is greater in the summer than in the winter. The latitude of the axis of greatest wind speed is also further north in summer than in winter (2) The average westerly component remains the same but the axis of greatest speeds moves south in winter (3) The average westerly component remains the same but the altitude of greatest wind speed reduces in winter (4) The average westerly component is greater in the winter than in the summer. The latitude of the axis of greatest seasonal wind speed is further south in winter than in summer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 963 - ID 1094 Frontal depressions can be assumed to move in the direction of the 2000 feet wind (1) in the warm sector (2) in front of the warm front (3) behind the cold front (4) at the apex of the wave ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 964 - ID 2706 On which of these routes would you not need to worry about icing at FL 170? (1) Madrid - Vienna (2) London - Stockholm (3) Zurich - Athens (4) Paris - Lisbon

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 965 - ID 234 Which weather phenomena are typical for the northern side of the Alps with strong winds from the south (Foehn)? (1) Good visibility, turbulence. (2) Continuous precipitation, severe turbulence. (3) Icing, huge mass of clouds. (4) Decrease in temperature, moderate to severe icing. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 966 - ID 2505 What is the technical term for an increase in temperature with altitude? (1) Subsidence (2) Advection (3) Inversion (4) Adiabatic ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 967 - ID 13811 The dewpoint temperature (1) can not be equal to the air temperature (2) can be reached by lowering the pressure whilst keeping temperature constant

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(3) can not be lower than the air temperature (4) can be reached by cooling the air whilst keeping pressure constant ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 968 - ID 1211 Clouds, fog or dew will always be formed when: (1) relative humidity reaches 98%. (2) water vapour is present. (3) temperature and dew point are nearly equal. (4) water vapour condenses. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 969 - ID 10855 After a sunny day, followed by a long clear night, you take-off from an airfield at mid-latitudes an hour before sunrise. The field is not situated close to the coast. Though the pressure gradient is rather large, the easterly surface wind is weak and makes (1) a sudden strong increase in wind speed and strong veering of the wind a short time after take-off (2) little increase in wind speed and little veering of the wind up to an height of 5000 FT (3) a squally wind up to great heights (4) large but gradual increase in wind speed and large but gradual veering of the wind up to a height of 5000 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 970 - ID 1575 Which one of the following statements applies to the tropopause? (1) It indicates a strong temperature lapse rate (2) It separates the troposphere from the stratosphere (3) It is, by definition, an isothermal layer (4) It is, by definition, a temperature inversion ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 971 - ID 13637 Clouds will mainly consist of supercooled water droplets when the temperature is: (1) between 0° C and -15° C. (2) between-30° C and -40° C. (3) below-40° C. (4) between-5° C and-30° C. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 972 - ID 2693 If you are flying from Zurich to London at FL 240, what conditions can you expect at cruising altitude? (1) CAT for the first half of the flight (2) Prolonged severe turbulence and icing throughout the flight (3) Flight largely in cloud; no turbulence (4) Moderate or severe turbulence and icing ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 973 - ID 4199 Isobars on a surface chart are lines of equal (1) QFF (2) QNH (3) QNE (4) QFE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 974 - ID 2710 Which typical weather condition is shown by the design for northern Italy? (1) Westerly wind (2) Easterly wind (3) High pressure

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(4) Warm southerly wind ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 975 - ID 10904 Of what does lenticular cloud provide evidence? (1) Stratospheric inversions (2) Jet streams (3) Areas of high level clear air turbulence (4) Mountain waves ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 976 - ID 2259 An aircraft is flying over the sea at FL 120, with a true altitude of 12000 feet; local ONH is 1013 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying ? (1) It is colder than ISA (2) It is warmer than ISA (3) Its average temperature is the same as ISA (4) There is insufficient information to come to any conclusion ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 977 - ID 5021 The arrows labelled "u" represent the tracks of tropical revolving storms which occur mainly from (1) December to April and are called tornadoes (2) May to July and are called cyclones (3) July to October and are called typhoons (4) January to March and are called willy-willies

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---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 978 - ID 1257 With what type of clouds are showers most likely associated? (1) Stratus. (2) Cumulonimbus. (3) Nimbostratus. (4) Stratocumulus. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 979 - ID 1282 During which seasons are hurricanes most likely to appear in the northern hemisphere? (1) Winter and spring. (2) Summer and autumn. (3) Winter. (4) All seasons. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 980 - ID 2554 With what type of cloud is "DZ" precipitation most commonly associated? (1) CB (2) cc (3) ST (4) cu ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 981 - ID 1991 Tropical revolving storms do not occur in the southeast Pacific and the south Atlantic mainly because (1) the southeast trade winds cross over into the northern hemisphere. (2) of the low water temperature. (3) of the strong southeast wind. (4) there is no coriolis force present. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 982 - ID 1982 What name is given to the low level wind system between the subtropical high pressure belt and the equatorial trough of low pressure (ITCZ) ? (1) Westerly winds. (2) Doldrums. (3) Monsoon. (4) Trade winds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 983 - ID 1691 Refer to the TAF for Bordeaux airport.; FCFR31 281400; LFBD 1524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT 8000 +SHRA BKN015CB PROB30 TSRA =; Flight Lisbon to Bordeaux, ETA 1800 UTC. What type of precipitation is forecast on the approach to Bordeaux ? (1) Moderate snow showers (2) Continuous moderate rain (3) Light drizzle and fog (4) Heavy rain showers ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 984 - ID 12800 Where, as a general rule, is the core of the polar front jet stream to be found? (1) In the polar air mass. (2) Just below the cold-air tropopause. (3) In the tropical air mass. (4) Just above the warm-air tropopause. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 985 - ID 4256 A small supercooled cloud droplet that collides with an airfoil will most likely (1) freeze immediately and create clear ice. (2) travel back over the wing, creating rime ice. (3) freeze immediately and create rime ice. (4) travel back over the wing, creating clear ice. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 986 - ID 1563 What is the approximate ratio between height and width for a jet stream cross section? (1) 1/1 (2) 1/10 (3) 1/1000 (4) 1/100 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Question n° 987 - ID 1270 Where is the coldest air to be found, in an occlusion with cold front characteristics? (1) At the junction of the occlusion. (2) Behind the front. (3) Ahead of the front. (4) At the surface position of the front. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 988 - ID 1236 Whilst flying at FL 180 on the northern hemisphere an aircraft experiences right drift. What effect, if any, will this have on the aircraft's true altitude ? (1) It increases. (2) It remains constant. (3) It decreases (4) Without knowing the pressure change this question cannot be answered. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 989 - ID 4046 Clouds, classified as being low level are considered to have bases from (1) 500to1000FT (2) 100 to 200 FT (3) 1000 to 2000 FT (4) the surface to 6500 FT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 990 - ID 13659 Air masses which are being cooled from below are often characterized by: (1) uniform temperature, good visibility. (2) fog, poor visibility and layered clouds. (3) continuous rain and freezing temperatures. (4) strong winds, cumulus clouds, good visibility. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 991 - ID 3730 An air mass is called stable when (1) the vertical motion of rising air tends to become weaker and disappears (2) the temperature in a given air mass decreases rapidly with height (3) the pressure in a given area is constant (4) the environmental lapse rate is high, with little vertical motion of air currents ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 992 - ID 13809 The Foehn wind is a (1) cold anabatic wind (2) warm katabatic wind (3) cold katabatic wind (4) warm anabatic wind ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 993 - ID 13815 The amount of water vapour which air can hold largely depends on: (1) the dew point. (2) relative humidity. (3) air temperature. (4) stability of air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 994 - ID 1610

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Which wind systems converge on the ITCZ, when it lies at the equator? (1) SE trade winds and NE trade winds (2) SW monsoon and NW trade winds (3) NW monsoon and SW trade winds (4) SW monsoon and NW monsoon ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 995 - ID 0 Frontal fog is most likely to occur (1) in summer in the early morning (2) in winter in the early morning (3) in advance of a warm front (4) in rear of a warm front ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 996 - ID 2572 Which constant pressure altitude chart is standard for FL 300? (1) 500 hPa (2) 700 hPa (3) 200 hPa (4) 300 hPa ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 997 - ID 0 In the northern hemisphere the wind at the surface blows (1) clockwise around, and away from the centre of, a low pressure area (2) counter-clockwise around, and toward the centre of, a low pressure area (3) from a low pressure area to a high pressure area (4) counter-clockwise around, and away from the centre of, a high pressure area. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 998 - ID 1234 Generally northern hemisphere winds at 5000 FT/AGL are south-westerly while most of the surface winds are southerly. What is the primary reason of difference between these two wind directions? (1) Friction between the wind and the surface. (2) A strong pressure gradient at higher altitudes. (3) Stronger Coriolis force at the surface. (4) The influence of warm air at the lower altitude. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 999 - ID 12835 What winds and air mass characteristics are mainly associated with the winter monsoon in the monsoon regions of the Indian sub-continent? (1) South-westerly winds carrying warm and humid air. (2) North-easterly winds bringing dry and hazy air. (3) South-easterly winds carrying warm and humid air. (4) North-westerly winds bringing dry and hazy air. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1000 - ID 1988 In the month of August you prepare a flight (cruising level FL 370) from Bombay (19°N- 73°E)to Bangkok (13°N- 100°E). What wind conditions can you expect? (1) Light winds diagonal to the route. (2) Strong northerly winds. (3) Headwinds. (4) Tailwinds. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1001 - ID 2246

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The QFF at an airfield in California located 69 metres below sea level is 1030 hPa. The air temperature is 10*C lower than a standard atmosphere. What is the ONH? (1) 1030 hPa (2) More than 1030 hPa (3) Less than 1030 hPa (4) It is not possible to give a definitive answer ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1002 - ID 4057 When isobars, for an area in the mid-latitudes on a weather map, are close together, the wind is most likely to be (1) blowing perpendicular to the isobars (2) changing direction rapidly (3) strong (4) light ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1003 - ID 4136 On the European continent METARs of main airports are compiled and distributed with intervals of (1) 0.5 hour (2) 1 hour (3) 3 hours (4) 2 hours ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1004 - ID 4178 Along the West coast of India the prevailing winds are the (1) SE monsoon in July and a SW monsoon in January (2) SW monsoon in July and a NE monsoon in January (3) SW monsoon in July and a SE monsoon in January (4) NE monsoon in July and a SW monsoon in January ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1005 - ID 2596 Which of these four METAR reports suggests that a thunderstorm is likely in the next few hours? (1) 201350Z34003KT0800 SN W002 M02/M04 01014 NOSIG = (2) 201350Z 04012KT 3000 BR OVC012 04/03 Q1022 BECMG 6000 = (3) 201350Z 16004KT8000 SCT110 OVC220 02/M02 Q1008 NOSIG = (4) 201350Z21005KT9999 SCT040CB SCT100 26/18 Q1016 TEMPO 24018G30KTTS = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1006 - ID 1090 The geostrophic wind is greater than the gradient wind around a low pressure system because the (1) centrifugal force is added to the pressure gradient (2) coriolis force opposes to the centrifugal force (3) coriolis force is added to the pressure gradient (4) centrifugal force opposes the pressure gradient ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1007 - ID 4113 Which of the statements is true concerning squall lines ? (1) Severe squall lines always move from northwest to southeast (2) For severe squall lines a SIGMET is issued (3) Severe squall lines only occur in the tropics (4) For severe squall lines a TAF is issued ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1008 - ID 3734 ONH is defined as

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(1) QFE reduced to MSL using the values of the standard atmosphere (2) pressure at MSL in the actual atmosphere (3) QFE reduced to MSL using the values of the actual atmosphere (4) pressure at MSL in the standard atmosphere ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1009 - ID 13631 What is a characteristic phenomenon for a stable atmosphere? (1) Many vertical currents. (2) Stratified clouds. (3) Weak wind. (4) No precipitation. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1010 - ID 1235 Friction between the air and the ground results in the northern hemisphere in: (1) backing of the wind and decrease of wind speed at the surface. (2) backing of the wind and increase of wind speed at the surface. (3) veering of the wind and increase of wind speed at the surface. (4) veering of the wind and decrease of wind speed at the surface. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1011 - ID 4021 A layer can be (1) stable for saturated air and unstable for unsaturated air (2) unstable for unsaturated air and conditionally unstable (3) unstable for unsaturated air and neutral for saturated air (4) stable for unsaturated air and unstable for saturated air ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1012 - ID 2557 With what type of cloud is "+TSRA" precipitation most commonly associated? (1) NS (2) AS (3) CB (4) sc ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1013 - ID 10910 Refer to the following TAF message. LF>o< 180800Z 180918 22020KT6000 SCT015 SCT080 BECMG 1214 24025KT2000 RABKN009 OVC070= At 1400 UTC, the lowest cloud base will be (1) between 900 and 1500 feet AMSL (2) between 900 and 1500 feet AGL (3) at 1500 feet AGL (4) at 900 feet AGL ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1014 - ID 4133 The cloud base, reported in the METAR, is the height above (1) the pressure altitude of the observation station at the time of observation (2) mean sea level (3) the highest terrain within a radius of 8 km from the observation station (4) airfield level ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1015 - ID 10330 During summer, a weak pressure gradient covers a coastal airfield in Eastern England resulting in mainly clear skies. The surface wind at dawn was calm. If the alignment of the coastline in the vicinity of the airfield is predominantly north/south, the surface wind direction is likely to

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become (1) easterly to southeasterly and increase in velocitiy by afternoon (2) westerly and then southerly by evening (3) easterly and then westerly by afternoon (4) westerly and increase in velocity by afternoon ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1016 - ID 12850 What is, approximately, the temperature at 20000 FT in the ICAO Standard Atmosphere? (1) -30°C (2) -25°C (3) -20°C (4) -15°C ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1017 - ID 1594 What type of cloud can produce hail showers? (1) AC (2) CB (3) NS (4) cs ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1018 - ID 10930 The temperature at the surface is given as +15*C and at 4000 FT it is +9*C, the state of this layer is said to be: (1) absolutely unstable (2) conditionally unstable (3) unstable (4) stable ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1019 - ID 2561 What will be the effect on the reading of an altimeter of an aircraft parked on the ground as an active cold front is passing? (1) It will fluctuate up and down by about +/- 50 feet. (2) It will first increase then decrease. (3) It will first decrease then increase. (4) It will remain unchanged. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Question n° 1020 - ID 2561 What will be the effect on the reading of an altimeter of an aircraft parked on the ground as an active cold front is passing? (1) It will fluctuate up and down by about +/- 50 feet. (2) It will first increase then decrease. (3) It will first decrease then increase. (4) It will remain unchanged. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------