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ATC Contingencies

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  1. 1. Actions During ATC Contingencies Arvind Kumar Singh 9/3/2016 1
  2. 2. Emergencies and Contingencies Unlawful Interference and Aircraft Bomb Threat . Fuel Dumping. Air-Ground Communications Failure. Emergency Descent Weather Deviation Procedures. Strayed VFR flights and VFR flights encountering adverse meteorological conditions. 9/3/2016 2
  3. 3. Emergency Separation Fuel Emergency & Minimum Fuel Procedures in regard to aircraft equipped with airborne collision avoidance systems (ACAS). Call Sign Confusion Emergencies and Contingencies 9/3/2016 3
  4. 4. General Monitor progress of an aircraft in emergency the aircraft passes out from the coverage of the ATS surveillance system Inform position to all ATS units which may be able to give assistance to the aircraft Transfer to adjacent sectors, when appropriate ADS-B emergency alert is observed & no other indication for nature of the emergency Attempt to establish communication with the aircraft to verify the nature of the emergency No response is received from the aircraft, ascertain if the aircraft is able to receive transmissions by requesting to execute a specified manoeuvre which can be observed on the situation display 9/3/2016 4
  5. 5. General When an emergency is declared by an aircraft, ascertain- Aircraft identification and type Type of emergency Intentions of the flight crew Position and level of the aircraft Decide the most appropriate type of assistance Enlist the aid of any other ATS unit Provide any other information such as details of suitable aerodromes, minimum safe altitudes, weather information; Obtain POB, Fuel, any hazardous materials Notify appropriate ATS units and authorities as per local instructions 9/3/2016 5
  6. 6. Unlawful Interference & Aircraft Bomb Threat Squawk 7500/7700 Promptly attend to requests. Anticipated needs of the aircraft Transmit, and continue to transmit, information pertinent to the safe conduct of the flight, without expecting a reply from the aircraft; Monitor and plot the progress of the flight with available means. Coordinate transfer of control with adjacent ATS units without requiring transmissions or responses from the aircraft. Inform, and continue to keep informed, appropriate ATS units, including those in adjacent FIRs, which may be concerned with the progress of the flight. ATMC 9 of 2012 and Contingency Plan to deal with Unlawful Interference 9/3/2016 6
  7. 7. If bomb or other explosive device has been placed on board- Advise the flight crew without delay by most expeditious means. Ascertain the intentions of the flight crew. Report intentions to other concerned ATS units. Handled in the most expeditious manner, the safety of other aircraft, personnel & ground installations are not put at risk. Aircraft in flight shall be given re-clearance to a requested new destination. Taxi route shall be selected with a view to minimizing any security risks. ATS units shall not provide any advice or suggestions concerning action to be taken by the flight crew in relation to an explosive device Unlawful Interference & Aircraft Bomb Threat 9/3/2016 7
  8. 8. Action by Recipient of a Bomb Threat Ask the Caller the Following Questions WHERE is the bomb? Asked first so that an evacuation can be planned. WHEN will it go off ? So that a time factor is known for the evacuation. WHAT does it look like ? To help in recognition of the device during a search. WHO are you ? To see if the caller is from a credible group. WHY are you doing this ? To build up a better picture of the incident and keep the caller on the line to assist in tracing the call. 9/3/2016 8
  9. 9. Action When Aircraft on Ground a) Aircraft has taxied out for departure: Aircraft to be directed to isolation bay b) Aircraft on bay with PIC in cockpit: Disembark pax/crew with their handbags immediately c) For pushed back aircraft with attached tow tractor/engine started : Bring back acft to same stand and disembark pax with their hand bags d) Coaches meant for pax should be kept at least 100 m away from the isolation bay/remote bay. e) At the same time, the rescue, fire fighting and security services should be alerted in accordance with the S.V.P. International Airport emergency plan. 9/3/2016 9
  10. 10. Action When Aircraft in Air Inform PIC complete details related to bomb threat, PIC of the acft will take the call considering on the various merits PIC decides to continue the flight: Treat acft as suspect and apply appropriate separation to ensure that other aircrafts are not endangered. Keep contiguous air traffic service units informed. PIC decides to land: Acft should be diverted to nearest civil or military airfield at which it can land safely. BTAC decision from departing station not received Direct acft to isolation bay after landing BTAC decision from departing station received as non specific Direct the affected aircraft to remote/isolation bay. 9/3/2016 10
  11. 11. Fuel Dumping In an emergency or other urgent situation to reduce to maximum landing mass in order to effect a safe landing. Route should be clear of cities and towns, preferably over water. Level should be not less than 6000 ft and duration of fuel dumping. Separation At least 10 NM horizontally, but not behind the aircraft dumping fuel; Vertical separation if behind the aircraft dumping fuel within 15 minutes flying time or at a distance of 50 NM by; at least 1 000 ft if above the aircraft dumping fuel at least 3 000 ft if below the aircraft dumping fuel. 9/3/2016 11
  12. 12. Fuel Dumping Radio silence during the fuel dumping operation. Information to other ATS units and non-controlled traffic Appropriate warning message for other traffic. A320 , B737 aircrafts dont have fuel dumping system 9/3/2016 12
  13. 13. Air-Ground Communications Failure Squawk 7600 Ascertain whether the aircraft is able to receive transmissions by requesting it to execute a specified manoeuvre. Aircraft fails to indicate that it is able to receive and acknowledge transmissions. Separation shall be maintained. In visual meteorological conditions: Continue to fly in visual meteorological conditions; Land at the nearest suitable aerodrome; Report its arrival by the most expeditious means to the appropriate air traffic control unit. 9/3/2016 13
  14. 14. In instrument meteorological conditions In procedural separation, maintain the last assigned speed and level, or MFA if higher, for a period of 20 minutes following the aircrafts failure to report its position over a compulsory reporting point and thereafter adjust level and speed in accordance with the filed flight plan. In airspace where an ATS surveillance system Maintain last assigned speed and level, or MFA if higher, for a period of 7 minutes following Time the last assigned level or minimum flight altitude is reached Time the transponder is set to Code7600. Aircrafts failure to report its position over a compulsory point. Whichever is later and thereafter adjust level and speed in accordance with the filed flight plan. Air-Ground Communications Failure 9/3/2016 14
  15. 15. Arrival at destination aerodrome: Proceed according to current FLP route as to designated navigation aid/fix Commence descent from the navigation aid or fix or EAT last received and acknowledged. If no EAT received and acknowledged than the estimated time of arrival. Complete a normal instrument approach procedure. Land, if possible, within 30 minutes after the estimated time of arrival or the last acknowledged EAT, whichever is later. Air-Ground Communications Failure 9/3/2016 15
  16. 16. Emergency Descent Immediately broadcast by means of the appropriate radio aids, or request for such broadcast. Aircraft receiving broadcast will clear the specified areas. Stand by on the appropriate radio frequency for further clearances. Immediately after emergency broadcast by ACC, APP, or TOWER concerned shall forward further clearances to all aircraft involved Inform any other ATS units and control sectors which may be affected Attention all aircraft in the vicinity of (or at) PRA emergency descent in progress from FL360 (followed as necessary by specific instructions, clearance, traffic information etc.). 9/3/2016 16
  17. 17. Weather Deviation When appropriate separation can be applied, issue clearance to deviate from track If conflicting traffic and unable to establish appropriate separation, Advise the pilot of inability to issue clearance for the requested deviation. Advise the pilot of conflicting traffic. Request the pilots intentions. Unable, Traffic West bound A320 F320 estimated PRA at 1020 call sign IGO 123 advise intentions. 9/3/2016 17
  18. 18. Strayed VFR flights and VFR Fights Encountering Adverse Meteorological Conditions A strayed aircraft- Deviated significantly from its intended track or which reports that it is lost Uncertain of its position Encountering adverse meteorological conditions, should be considered to be in a state of emergency. Any of the following information considered pertinent so as to better provide assistance: Aircraft flight conditions, Position (if known) and level, Airspeed and heading Pilot experience, SSR, ADS-B capability Departure and Destination aerodromes, POB, Endurance. Assistance to a VFR flight using an ATS surveillance system upon the request or concurrence and agreed by the pilot.. 9/3/2016 18
  19. 19. Emergency Separation Half the applicable vertical separation minimum may be used. 500 ft where 1000 Ft. vertical separation minimum. 1 000 ft where 2000 ft vertical separation minimum. Flight crews concerned shall be advised that emergency separation is being applied Informed of the actual minimum used Essential traffic information shall be provided 9/3/2016 19
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