Airbus 52 A300 A310 Doors

MTT M540000/R3.4 16AUG01MTT M540000/R3.4 16AUG01For Training Purposes OnlyFor Training Purposes Only

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ATA 52ATA 52DoorsDoors


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General

Access to the various compartments of the aircraft can be gainedthrough the appropriate doors. According to their special function thedoors are used as entrance and exit for persons or for loading andunloading cargo and baggage; other doors are exclusively used formaintenance purposes.

Before any door in the pressurized area is to be opened from outside orinside, observe the following instructions:

WARNING: IF THE AIRCRAFT IS SUPPLIED WITH CONDITIONEDAIR, MAKE SURE THAT THE FOLLOWING CONDITIONSARE MET BEFORE YOU OPEN THE DOOR:- AT LEAST ONE FLT COMPARTMENT WINDOW OR

PASSENGER COMPARTMENT DOOR IS OPEN ANDREMAINS OPEN DURING SERVICING.

- IF THE AIRCRAFT IS PARKED OUTSIDE AND ISNOT PROTECTED FROM THE RAIN, ONEMAINTENANCE DOOR SUCH AS 134AR, 136AR, ORAVIONICS ACCESS DOOR 121BL IS OPEN ANDREMAINS OPEN DURING SERVICING.

WARNING: RESIDUAL PRESSURE COULD CAUSE THE DOOR TOOPEN WITH A SUDDEN FORCE AND INJURE PERSONSAND/OR DAMAGE THE AIRCRAFT.

Passenger/Crew DoorsTwo passenger/crew doors, one on each side, are provided for crew.The doors open outwards and can be operated from inside and outside.Each passenger/crew door is equipped with an emergency escape slide.

Cargo Compartment DoorsEach of the three lower cargo compartments is accessible through acargo door for loading and unloading cargo and baggage. FWD and AFTcargo compartment doors are opened outwards; bulk cargocompartment door is swung inwards. FWD and AFT cargo compartmentdoors can be operated from outside only. Bulk cargo compartment doorcan be operated from outside and inside. In the MAIN Deck cargocompartment is accessible through the MAIN Deck Cargo (MDC) door. Itcan be operated from inside and outside to open outwards.

A300/A310 Courier (Passenger/PAX) / Crew and Cargo Compartment Doors - GeneralA300/A310 Courier (Passenger/PAX) / Crew and Cargo Compartment Doors - General


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A300/A310 Courier (Passenger/PAX) / Crew and Cargo Compartment DoorsA300/A310 Courier (Passenger/PAX) / Crew and Cargo Compartment DoorsIdentification LocationIdentification Location


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General

Two Courier Passenger/Crew Doors (L1/R1), one on each side, areprovided for Courier / Passengers and Crew. The doors open outwards.They can be operated from inside and outside. Each CourierPassenger/Crew Door is equipped with an Emergency Escape Slide.

The L3/R3 Courier Passenger/Crew Doors (Emergency Exit Doors) havebeen deactivated for the FedEx Main Deck Cargo Compartmentconfiguration.

The L2/R2 Passenger/Crew Doors, are also deactivated, undergoperiodic inspections and door structural area checks for AirframeAirworthiness and Structural Integrity criteria per FAA requirements.

Passenger Compartment Emergency Exit Doors (L2/R2)In addition to the Courier (Passenger/PAX) / Crew Doors (L1/R!), thereare two Emergency Exits (L3/R3) Doors in the Main Deck CargoCompartment (MDCC). These Emergency Exits (L3/R3) Doors aredeactivated for FedEx Main Deck Cargo Configuration.

Cargo Compartment DoorsEach of the three Cargo Compartments is accessible through a CargoDoor for loading and unloading cargo and other types of shipment cargo.The FWD and AFT Cargo Compartment Doors are opened outwards.

The BULK Cargo Compartment Door opens inward into the Bulk CargoCompartment and can be latched to the compartment ceiling HoldLocking Mechanism which is mounted to the ceiling structural area.

The FWD and AFT Cargo Compartment Doors can be operated fromoutside of the aircraft only. The BULK Cargo Compartment Door can beoperated from either the outside or inside of the aircraft utilizing the DoorOperating Door Handle Mechanism and Door Handle.

The Airbus Freighter Configuration utilizes the previous PassengerCarrying Version Main Deck that has been converted into the Main DeckCargo Compartment (MDCC) for hauling Cargo Bins and PalletizedUnits for FedEx Express Cargo operations.

The Main Deck Cargo Compartment (MDCC) is accessible through theMDCC Door located on the forward LH Side of the Fuselage at theFuselage Water Line which can be operated from either the inside andoutside of the aircraft.

A310 Courier (Passenger/PAX)/Crew and Cargo Compartment Doors - GeneralA310 Courier (Passenger/PAX)/Crew and Cargo Compartment Doors - General


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In Place -In Place -DeactivatedDeactivated

A310 Passenger (PAX)/Courier/Deactivated L/R Doors 2 and 3/and CargoA310 Passenger (PAX)/Courier/Deactivated L/R Doors 2 and 3/and CargoCompartment Doors- Identification LocationCompartment Doors- Identification Location


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Exterior Doors - Operation Limitations

WARNING: SPECIAL PRECAUTIONS MUST BE FOLLOWEDBEFORE CARRYING OUT MAINTENANCE ON OR NEARCOURIER PASSENGER/CREW DOORS (REF. 52-10-00,P. BLOCK 301) OR CARGO DOORS (REF. 52-30-00, P.BLOCK 301).

NOTE: In following limitations, door operation is defined as opening,closing or holding the door in the open position.

The courier passenger/crew doors can be operated in normal conditionsin wind speeds gusting up to 60 (sixty) knots without structural damage,although extra personnel may be required to operate these doors in highwind speeds.

The emergency power system on the L1/R1 courier passenger/crewdoors is designed to open the doors in wind speeds gusting up to 40(forty) knots under the most adverse combinations of wind direction andaircraft attitude. In wind speeds above 40 (forty) knots manualassistance may be required.

The FWD and AFT cargo compartment doors are opened and closedhydraulically. Their operation is limited by wind speeds gusting up to 60(sixty) knots.

The bulk cargo compartment door opens inward, therefore there are nooperation limitations.

The MAIN DECK cargo door operation is limited by wind speeds gustingup to 40 (forty) Knots.

A300/A310 Exterior Doors - Operation LimitationA300/A310 Exterior Doors - Operation LimitationGusting or High Wind ConditionsGusting or High Wind Conditions


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MDCC Door -MDCC Door -Gusting up to 40 (forty) knotsGusting up to 40 (forty) knots

FWD and AFT Cargo Doors -FWD and AFT Cargo Doors -Gusting up to 60 (sixty) knotsGusting up to 60 (sixty) knots

BULK Cargo Door -BULK Cargo Door -Inward Opening-Inward Opening-

NO wind operational limitationsNO wind operational limitations

A300/A310 Exterior Doors - Operation LimitationsA300/A310 Exterior Doors - Operation LimitationsGusting and High Wind SpeedsGusting and High Wind Speeds


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Maintenance and Service Doors

For maintaining and servicing the various systems, compartments andequipment panels and doors of different sizes are installed. Theirpurpose can be derived from their designation.

These doors and panels are as follows:Door - Refuel/Defuel Panel 110VU (144DR)Doors - FWD Jacking Point Receptacle (121CL)Doors - Ground Serviced Conditioned Air Connection (135AL, 135BL)Door - FWD Potable Water Drain (136BR)Door - FWD Lavatory Service (121DL, 136CR, 172AR)Door - Green Hydraulic System (147AL) Ground Connector ServiceDoors - APU Access (315AL and 316AR)

Door - Equipment Compartment Access (312AR)Door - Equipment Compartment Access (313AL)Door - Avionics Compartment Access (121BL)Door - Air Fan ! Air Conditioning Control Valve Access (134AR,

136AR)Duct - Tail Cone (317AL)Door - Drain System - FWD Cargo Compartment (133AL)Door - Ground Air Conditioning and Air Starting (144BR)Door - Ground Electrical Power Receptacle (121EL)Door - Ground Oxygen Connection (122AZ)Doors - Cargo Compartment Control Panel Access (122CR, 152KR,

231AL)

Several panels and covers of different sizes are distributed over theaircraft for inspection of the structure, etc.

A300 Maintenance and Service Doors A300 Maintenance and Service Doors Location Description Location Description


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A300 Maintenance and Service Doors - LocationA300 Maintenance and Service Doors - Location


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Description

Maintenance and Service Doors

For maintaining and servicing the various systems, compartments andequipment panels and doors of different sizes are installed. Theirapplication can be derived from their designation.

These doors and panels are as follows:Doors - APU Access (315AL and 316AR)Door - Equipment Compartment Access (312AR)Door - Equipment Compartment Access (313AL)Door - Avionics Compartment Access (121BL)Door - Air Fan ! Air Conditioning Control Valve Access (134AR,

136AR)Duct - Tail Cone (317AL)Door - Drain System - FWD Cargo Compt. (135AL)Door - Ground Air Conditioning and Air Starting (144BR)

Door - Ground Electrical Power Receptacle (121EL)Door - Potable Water Service (136BR)Door - Ground Oxygen Connection (122AZ)Doors - Cargo Compt. Control Panel Access (122CR, 677CR)Door - Refuel/ Defuel Panel 110VU (144DR)Doors - FWD Jacking Point Receptacle (121CL)Doors - Ground Serviced Conditioned Air Connection (135BL)Door - FWD Lavatory Service (121DL)Door - FWD Potable Water Drain (136BR)Door - Landing Gear Door Ground Opening (148BR) Control Valve

Handle AccessDoor - Green Hydraulic System (147AL) Ground Connector ServiceSeveral panels and covers of different sizes are located over the aircraftfor inspection of the structure and other purposes.

Maintenance and Service DoorsMaintenance and Service Doors


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A310 Maintenance and Service Doors - LocationA310 Maintenance and Service Doors - Location


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Landing Gear Doors

With the landing gear retracted in flight the landing gears are covered bydoors. These doors close the wheel wells flush with the aircraft skin.The landing gear doors are hydraulically operated with the landinggears.Each main landing gear is covered by doors 734LH, 744RH attached tothe fuselage and 733 and 732LH, 743 und 742RH attached to the gearshock struts.The nose landing gear is covered by doors 713, 714, 715 and 716attached to the edge of the landing gear bay and an additional panel 712is attached to the landing gear shock strut.

A300/A310 Landing Gear Doors - Location DescriptionA300/A310 Landing Gear Doors - Location Description


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Front ViewFront ViewLooking AftLooking Aft

A300/A310 Landing Gear Doors - LocationA300/A310 Landing Gear Doors - Location


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Fixed Interior Doors

The various internal compartments are accessible through theappropriate doors. Their purpose can be derived from their designation.The following doors belong to this group:Door - Flight CompartmentDoors - Avionics Compartment Access (131AZ, 132AZ)Doors - Hydraulic Compartment Access (147DZ, 147CZ, 147BZ,

148CZ, 148DZ)Door - Aft Cabin Underfloor Compartment (162AZ)Doors - Vertical Stabilizer Access (311AZ/311BZ)

A300/A310 Fixed Interior Doors - Location DescriptionA300/A310 Fixed Interior Doors - Location Description


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A300/A310 Fixed Interior Doors - LocationA300/A310 Fixed Interior Doors - Location


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GeneralGeneralThere are two courier passenger/crew doors (L1/R1) installed on theLH and RH fuselage sides.FWD passenger/crew doors LH and RH at zones 831 and 841 are locatedbetween FR14 and FR16A.Both doors are structurally and mechanically similar and aredesigned to be used as emergency exits. The opening and closingoperations are accomplished by interior and exterior controlhandles, the doors opening outwards and parallel to the fuselage inthe direction of flight.Each door is comprised of the following major components:

Door Structure, Door Seal and Drain HolesDoor Structure, Door Seal and Drain HolesThe structure comprises an outer and an inner skin supported byintegral stringers, edge and cross members and milled longerons.The door seal, made from a rubber extrusion and installed roundthe inner edge of the outer skin is pressed into contact with asealing section of the fuselage door frame and inflated by cabinair pressure to form a pressure tight seal when the door isclosed.Holes are bored in the structure at the lowest collection pointsof longerons to allow liquids to drain from door interior.

Door SuspensionDoor SuspensionThe door suspension comprises a support arm in the form of alight alloy box section, with integral connection forks,attached to the door by connection links, the lower one beingalso attached to the lifting shaft of the door lockingmechanism. A door stay mechanism is installed in the support armwhich locks the door in the open position. The upper and lowerguide arms attached to the fuselage attachment fittings aremovable in two planes and cause the door to remain parallel tothe fuselage during opening and closing.

Door Lining and InsulationDoor Lining and InsulationThe door lining consists of panels which match the interiordecor of the main deck cargo compartment. A sound and heat matis installed between the door inner skin and lining.

Door Damper and Emergency Operation CylinderDoor Damper and Emergency Operation CylinderThe door damper and emergency operation cylinder is installed onthe support arm. It is comprised of a cylinder body, a dampingassembly and a gas cylinder and percussion device assembly witha manual safety lock. It limits the speed of the door duringnormal opening and closing operations and acts as a jack underemergency conditions.

DataData

Courier Passenger/Crew Door (L1/R1)Courier Passenger/Crew Door (L1/R1)Size : 1.930 x 1.070 m (76 x 42 in.)Weight with escape slide and door lining : 190 kg (419 lb.)Weight without escape slide and door lining : 125 kg (276 lb.)Weight with slide raft and door lining : 214 kg (472 lb.)

Component LocationComponent Location

SuspensionSuspension--------------------------------------------------------FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF-------------------------------------------------------- UPPER GUIDE ARM 831, FWD 841 52-11-12 LOWER GUIDE ARM 831, FWD 841 52-11-12 SUPPORT ARM 831, FWD 841 52-11-12 DOOR DAMPER AND EMERGENCY 831, FWD OPERATION CYLINDER 841 52-10-14 LOWER CONNECTION LINK 831, FWD 841 52-11-21 UPPER CONNECTION LINK 831, FWD 841 52-11-21

A300/A310 L1/R1 Courier Passenger/Crew Doors -A300/A310 L1/R1 Courier Passenger/Crew Doors -Door Suspension - Component LocationDoor Suspension - Component Location


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A300/A310 L1/R1 Courier Passenger/Crew Doors -A300/A310 L1/R1 Courier Passenger/Crew Doors -Door Suspension - Component LocationDoor Suspension - Component Location


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Door Locking MechanismDoor Locking MechanismTwo door handles rotating about a horizontal axisare installed for operation of the door lockingmechanism, one interior and one exterior. Thehandle shafts are coupled by a gearbox to permitindependent operation. The handles are connectedvia bellcranks and rods to a lifting shaft, alowering shaft and a locking shaft.

Locking MechanismLocking MechanismFIN FUNCTIONAL

DESIGNATIONPANEL ZONE ACCESS ATA

DOOR REFDOOR LATCHES 831, FWD

841 52-11-21RODS BETWEEN DOORLATCHES AND

831, FWD

BELLCRANK 841 52-11-21BELLCRANK ONLOCKING SHAFT

831, FWD

841 52-11-21LOCKING SHAFTS 831, FWD

841 52-11-21ROD BETWEENLOCKING SHAFT AND

831, FWD

GEAR BOX 841LOWERING SHAFT 831, FWD

841 52-11-21ROD BETWEENLOWERING SHAFT AND

831, FWD

GEAR BOX 841 52-11-21GEAR BOX 831, FWD

841 52-11-21INTERIOR CONTROLHANDLE

831, FWD

841 52-11-21EXTERIOR CONTROLHANDLE

831, FWD

841ROD BETWEEN GEARBOX AND TWIN

831, FWD

LEVER 841 52-11-21TWIN LEVER 831, FWD

841 52-11-21ROD BETWEEN TWINLEVER AND

831, FWD

LIFTING SHAFT 841 52-11-21ROD BETWEENLIFTING SHAFT AND

831, FWD

LOWER CONNECTIONLINK

841 52-11-21

LIFTING SHAFT 831, FWD841 52-11-21

ROD ASSY BETWEENLIFTING SHAFT

831, FWD

AND TORQUE SHAFT 841 52-11-21TORQUE SHAFT 831, FWD

841 52-11-21TORSION BAR SPRING 831, FWD

841 52-11-21

Door Locking MechanismDoor Locking Mechanism


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsLocking Mechanism - Component LocationLocking Mechanism - Component Location


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GeneralGeneral

Emergency Escape Slide Release MechanismEmergency Escape Slide Release MechanismThe mechanism consists of a two-position control handle, a compositelinkage, bellcranks and linkage guides and is connected to the doorstructure by bearings and guide fittings. The control handle is locatedadjacent to the interior door locking handle and can be set for flightin the fully forward position (armed position) or on the ground in thefully aft position (disarmed position). The mechanism can be manuallyoperated only and opening of the door using the exterior locking handlewill cause the mechanism to revert to the fully aft position.

Latch and Stop FittingsLatch and Stop FittingsBoth edge members of each door are fitted with eight stop fittings foreach of which mating fittings are mounted on the fuselage door frame.A lowering stop is installed on the forward side of the fuselage doorframe which contacts the lowering shaft when the door is closed. Theshaft rotates to unlock the gearbox and lower the door. Two rollerfittings are attached to the fuselage door frame which support thelifting shaft during the lifting movement as the door is being opened.Latch fittings attached to the fuselage door frame are fitted withrollers to receive the door latches. Four fittings with rollers areattached to the door edge members which run in corresponding guidefittings on the fuselage door frame when the door is being closed.

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- HANDLE 831, FWD 841 52-10-30 ECCENTRIC LEVER 831, FWD 841 52-10-30 STOP LEVER 831, FWD 841 52-10-30 ROD BETWEEN HANDLE AND BELLCRANK 831, FWD UNIT 841 52-10-30 BELLCRANK UNIT 831, FWD 841 52-10-30 ROD BETWEEN BELLCRANK UNIT AND LOCKING MECHANISM 52-10-30 LOCKING MECHANISM 831, FWD 841 52-10-30 GUIDE STRUT 831, FWD 841 52-10-30 ROD BETWEEN LOCKING MECHANISM 831, FWD AND BELLCRANK 841 52-10-30 BELLCRANK 831, FWD 841 52-10-30 LINKAGE GUIDE 831, FWD 841 52-10-30 SLIDERS 831, FWD 841 52-10-30 GIRT BAR 831, FWD 841 52-10-30 ROD BETWEEN BELLCRANK UNIT AND 831, FWD LINKAGE GUIDE 841 52-10-30 ROD BETWEEN BELLCRANK UNIT AND 831, FWD LINKAGE GUIDE 841 52-10-30 BELLCRANK UNIT 831, FWD 841 52-10-30

A300/A310 L1/R1 Courier Passenger/Crew Doors - EmergencyA300/A310 L1/R1 Courier Passenger/Crew Doors - EmergencyEscape Slide Release Mechanism - Component LocationEscape Slide Release Mechanism - Component Location


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A300/A310 L1/R1 Courier Passenger/Crew Doors - Emergency Escape SlideA300/A310 L1/R1 Courier Passenger/Crew Doors - Emergency Escape Slide Mechanism - Component Location Mechanism - Component Location


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsStructural Components - DescriptionStructural Components - Description

Description

Door Structure, Door Seal and Drain HolesThe outer skin of the FWD door together with the integral stringers aremilled from pre-stressed light alloy plate.The door structure between the inner and outer skins consists of lightsheet-metal edge and cross members and milled longerons. Adjustablestop fittings, which take the load when the main deck cargo compartmentis pressurized, are bolted to the ends of the longerons. A window isinstalled in the outer skin between longerons 4 and 5.The door seal consisting of a rubber extrusion with equally spacedpressurization holes ensures pressure-sealing of the door when thecompartment is pressurized. The seal is installed around the inner edgeof the outer skin and retained in-situ by retainers and screws. When thedoor is closed, the seal is pressed into contact with a sealing section ofthe fuselage door frame and is inflated by cabin air pressure to form apressure tight seal.Each door is equipped with two hoist fittings riveted to the structure andouter skin on the right and left above the door center. The fittings areprovided with threaded inserts to receive the hoisting lugs.Holes are bored in the structure at the lowest collection points oflongerons to allow liquids to drain from the door interior.


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsStructural Components - Component ViewStructural Components - Component View


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsGuide and Support Arm Suspension Links - DescriptionGuide and Support Arm Suspension Links - Description

Door SuspensionDoors are suspended by a support arm and two guide arms attached tothe fuselage structure. The support arm is a cast light alloy box sectionwith integral connection forks. Each connection fork is provided withstandardized, replaceable bushes.

Support Arm Connection LinksThe door is attached to the support arm by means of upper and lowerconnection links. The lower connection link is also connected to thelifting shaft of the door locking mechanism.


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Support ArmSupport Arm(Suspension Air)(Suspension Air)

A300/A310 L1/R1 Courier Passenger/Crew Doors - Guide and Support ArmA300/A310 L1/R1 Courier Passenger/Crew Doors - Guide and Support ArmConnection Links - Component LocationConnection Links - Component Location


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Lining and Insulation - DescriptionDoor Lining and Insulation - Description

Door Lining and InsulationThe door lining consists of panels, which match the interior decor of themain deck cargo compartment. A heat and soundproof insulation mat isprovided between the door inner skin and the lining.

Cut-outs are incorporated in both the lining and the insulation mat tofacilitate the installation of the locking and emergency escape sliderelease mechanisms, the interior control and emergency control handlesand the window and locking indicators.


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Lining and Insulation - Component ViewDoor Lining and Insulation - Component View


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Seal - General DescriptionDoor Seal - General Description

General Description

The door seal consisting of a rubber extrusion with equally spacedpressurization holes ensures pressure-sealing of the door when thecompartment is pressurized.The seal is installed around the inner edge of the outer skin and retainedin place by retainers and screws.When the door is closed, the seal is pressed into contact with a sealingsection of the fuselage door frame and is inflated by cabin air pressureto form a pressure tight seal.


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SealSealRound TypeRound Type

SealSealTubular TypeTubular Type

Some A300sSome A300s

Some A300s and A310sSome A300s and A310s

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew Doors Door Seal - Installation View Door Seal - Installation View


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Buffer and Stay Mechanism - DescriptionDoor Buffer and Stay Mechanism - Description

Door Buffer/Stay Mechanism/Guide Arms

An adjustable door buffer attached to the inner face of the support armacts as a limit stop and shock absorber when the door is fully open.

A door stay mechanism installed in the support arm locks the door in thefully open position. The mechanism comprises a release button,actuating rod and lever, bellcrank, spring-loaded rod and a locking hook.

The guide arms are located at the upper part of the door and attached tothe door and fuselage structure with fittings that permit parallel linkmotion for the door travel. On the FWD doors the upper guide arm isconnected to the door structure by means of a bellcrank fitted on aspring rod cylinder, damping sideways movement of the door.

Door stay mechanism will require replacement per A300/A310 AircraftMaintenance Manual (AMM) (Ref.: 52-11-12, Page Block 401, FWDPassenger/Crew Door).

For information on Inspection of Door Stay Mechanism, refer toA300/A310 AMM, 52-10-11, Page Block 501, FWD Passenger/CrewDoors - Adjustment/Test.

The Door Buffer (Door Stop) Gap “M”

Clearance between the buffer pad and fuselage skin surface is requiredto prevent chafing and/or fuselage skin damage/stress during normaland windy conditions

If adjustment is required, ref – A300/A310 AMM ATA 52-10-11, PageBlock 501, FWD Passenger/Crew Doors - Adjustment/Test.

Observe all Warnings. Special Precautions must be followed to preventinjury and/or damage to aircraft/equipment. Ensure Emergency EscapeSlide, Door Damper and Emergency Operation Cylinder and DoorWarning System are safetied prior to Buffer adjustment per A300/A310AMM (Ref: 52-10-00, Page Block 301.


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Buffer and Stay Mechanism - Component ViewDoor Buffer and Stay Mechanism - Component View


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A300/A310 L1/R1 Courier Passenger/Crew Doors - Damper and EmergencyA300/A310 L1/R1 Courier Passenger/Crew Doors - Damper and EmergencyOperation Cylinder - Component View/LocationOperation Cylinder - Component View/Location

Door Damper and Emergency Operation CylinderThe door damper and emergency operation cylinder is installed on thesupport arm. The hydraulically operated door damper is used to controlthe speed at which the door is opened and closed.During normal operating conditions, damping is effected by hydraulicfluid passing from one chamber to another via a calibrated diaphragmwhen the door is being opened, and via a restrictor in the piston whenthe door is being closed.In the event of emergency conditions, the door damper acts as a jack topush the door in the required direction. When the door is opened underemergency conditions, the diaphragm is ruptured by the percussiondevice mechanism and the nitrogen pressure thus released into thecylinder converts the damper into an actuator.

NOTE: After emergency operation, the percussion device assemblymust be removed in order to replace the diaphragm. (Ref. AMM52-10-14, P.Block 401).

NOTE: After emergency operation the door can be completely closedonly after the door damper and emergency operation cylinderhas been discharged.To permit door closing immediately after an emergency openingmanoeuvre, the actuating cylinder is automaticallydepressurized through calibrated vent holes in the cylinder bodywhich become free when the actuating cylinder is fully extended.The actuating cylinder is depressurized within a maximum of 3seconds.


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A300/A310 L1/R1 Courier Passenger/Crew Doors - Damper and EmergencyA300/A310 L1/R1 Courier Passenger/Crew Doors - Damper and EmergencyOperation Cylinder - Component View/LocationOperation Cylinder - Component View/Location


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A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Locking Mechanism - DescriptionDoor Locking Mechanism - Description

Door Locking MechanismThe door control handles which rotate about their horizontal axis areinstalled to facilitate operation of the door locking mechanism from boththe inside or outside of the door. The shafts of the two handles arecoupled via a gearbox thereby permitting independent operation. Rodsare connected to a bellcrank hinged on the gearbox and routed into thelower door section to the lifting shaft.

The lifting shaft is fitted with eccentrically mounted arms which areequipped with rollers sliding in door frame mounted roller fittings to liftthe door.

The shaft is also connected to a support arm via a rod, a lever and aconnection link, and to the torque shaft via a rod assembly and abellcrank. The torque shaft and torsion bar spring compensate for theweight of the door.


ATA 52ATA 52A300/A310A300/A310

52-52-3535

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Locking Mechanism - Component ViewDoor Locking Mechanism - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-3636

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Locking Mechanism - DescriptionDoor Locking Mechanism - Description

Description

Latches/Locking and Lowering Shafts/Gearbox

Similarly, rods are connected from the gearbox and hinged bellcrank tothe upper door section to the locking shaft which retracts or extends thedoor latches when the door is respectively opened or closed.The latches are connected by rods and bellcranks to the locking shaftand a spring rod cylinder, connected to each latch bellcrank, is attachedto the door structure. An arm on each bellcrank forms the lockingindicator.

A lowering shaft, also installed in the upper door section, acts via a rodon a locking hook to block the gearbox when the door is open. The doorcannot, therefore, be lowered when in the open position.The lifting, lowering and locking shafts all rotate in ball bearings. Fittings,complete with rollers, are installed on both sides of the door.They mate with corresponding guide tracks which are located on the LHand RH sides of the door frame parallel to the outer skin and vertical tothe door frame.


ATA 52ATA 52A300/A310A300/A310

52-52-3737

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Locking Mechanism - Component ViewDoor Locking Mechanism - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-3838

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew Doors Exterior Control Handle - General Exterior Control Handle - General

The exterior control handle is connected via a jaw to the emergencyescape slide mechanism, to disarm the system when the door isopened.The door locking mechanism actuates a limit switch of the Door WarningSystem. A second limit switch which is installed in the fuselage doorframe is actuated by the door latches.

The Exterior Control Handle consists of:• Control Handle• Cam• Stop• Flap

on the door handle assembly

Operation Check

• Open and then close the door with the Exterior Control Handle

• Check the Exterior Flush Handle is closed and flap is flush withcontour of Exterior Control Handle

• Check that Exterior Control Handle is in locked position

• Open door with Exterior Control Handle

• Fully open Exterior Control Handle

• Check automatic locking of Exterior Control Handle

• Close door with Interior Control Handle

• Check that Exterior Control Handle is closed and flap is flush withcontour of exterior handle

With the door closed (Ref: A300/A310 AMM 52-10-00, Page Block 301),the following operation of the Exterior Control Handle can be checked fordisarming the Interior Emergency Control Handle.

• Remove safety pin for Emergency Control Handle

• Set Emergency Control Handle to “ARMED” (fully forward) position

• Open door with Exterior Control Handle

• Check that Emergency Control Handle is in “DISARMED” (fully aft)position

• Insert safety pin with red streamer for Emergency Control Handle


ATA 52ATA 52A300/A310A300/A310

52-52-3939

Opening from Outside - Normal OperationOpening from Outside - Normal Operation

L1/R1 Door - Exterior Control HandleL1/R1 Door - Exterior Control Handle(Typical)(Typical)

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsExterior Control Handle - Component and LocationExterior Control Handle - Component and Location


ATA 52ATA 52A300/A310A300/A310

52-52-4040

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsEmergency Escape Slide Release Mechanism - DescriptionEmergency Escape Slide Release Mechanism - Description

Description

The Emergency Escape Slide Release Mechanism, located in the lowerdoor section, comprises a two-position control handle, compositelinkage, bellcranks and linkage guides. It is connected to the doorstructure by bearings and guides.The emergency control handle, which can be manually operated only, islocated adjacent to the interior control handle and can be set for flight infully forward position (ARMED) or on the ground in fully aft position(DISARMED).It is possible to safety the emergency control handle in the fully aft(DISARMED) position by using a safety pin. A mechanically operatedshutter (blanking device) blocks the safety pin hole when the emergencycontrol handle is not in the fully aft (DISARMED) position.The connection between the emergency control handle and the doorlocking mechanism is established by a cam disc and a roller locating inthe jaw of the exterior control handle.


ATA 52ATA 52A300/A310A300/A310

52-52-4141

A300/A310 L1/R1 Courier Passenger/Crew Doors - Emergency Escape SlideA300/A310 L1/R1 Courier Passenger/Crew Doors - Emergency Escape SlideRelease Mechanism - Component ViewRelease Mechanism - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-4242

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsRelease/Locking Mechanism - Component ViewRelease/Locking Mechanism - Component View

When the exterior control handle is operated to open the door, therelease mechanism for the emergency escape slide and emergencydoor opening is returned to the DISARMED position via the jaw androller.The door damper and emergency operation cylinder, which opens thedoor in the event of an emergency or damps the door under normalconditions, is installed on the support arm.The release lever of the emergency operation cylinder is operated by apivoting stop lever. The stop lever is connected to the emergencycontrol handle via a rod and a bellcrank unit.A rod connects the stop lever bellcrank unit to a locking mechanism toblock the emergency escape slide release mechanism when the door isopen.The rod is connected to a bellcrank loaded by a helical compressionspring and to a notched sleeve. When locked, a pawl in the notchedsleeve is connected via a guide strut and spring to the lifting shaft.


ATA 52ATA 52A300/A310A300/A310

52-52-4343

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsRelease/Locking Mechanism - Component ViewRelease/Locking Mechanism - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-4444

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsGirt Bar Mechanism - DescriptionGirt Bar Mechanism - Description

Description

An additional rod connects the bellcrank of the locking mechanism to thebellcrank unit of the linkage guide in the lower door section.The girt bar is suspended in sliders below the door. The conical pins ofthe linkage guide engage in the sliders when unlocked and disengagefrom the sliders in the locked position.The fuselage girt bar fittings receive the sliders in the locked positionand retain the girt bar connected by strips to the floor-mountedemergency escape slide.


ATA 52ATA 52A300/A310A300/A310

52-52-4545

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsGirt Bar Mechanism - Component ViewGirt Bar Mechanism - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-4646

Description

Latch and Stop Fittings

The two members of the door are equipped with eight stop fittings eachwith corresponding mating fittings mounted on the fuselage door frame.

All door stop fittings are adjustable.

An adjustable lowering stop is installed on the forward side of thefuselage door frame between the third and fourth stop fittings.

When the door is closed, the roller of the lowering shaft contacts thelowering stop causing the shaft to rotate to unlock the gearbox and lowerthe door.

Upper and lower guide fittings are attached to each side of the fuselagedoor frame. The upper fittings have an adjustable stop incorporated toenable final settings to be made to the door.

Roller fittings mounted on the fuselage door frame support the liftingshaft during the lifting movement of door opening.

On the FWD passenger/crew door, the rollers are installed on integrallugs in the upper fuselage door frame.

A total of four fittings with guide rollers are mounted on the edgemembers of the door in the upper and lower areas. The guide rollerslocate and run in the corresponding guide fittings on the fuselage doorframe when the door is being closed.

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew Doors Latch and Stop Fittings - Description - MEL Latch and Stop Fittings - Description - MEL


ATA 52ATA 52A300/A310A300/A310

52-52-4747

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsLatch and Stop Fittings - Component ViewLatch and Stop Fittings - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-4848

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsOpening from Outside - Normal Operation - Component ViewOpening from Outside - Normal Operation - Component View

Operation

OpeningFrom Main Deck Cargo Compartment - Normal Operation


WARNING: BEFORE SUPPLYING AIR BY EXTERNAL SOURCE ORAPU MAKE CERTAIN THAT:- AT LEAST ONE FLT COMPT WINDOW OR CABIN

DOOR IS OPEN AND REMAINS OPEN DURINGSERVICING.

- IF THE A/C IS PARKED OUTSIDE AND IS NOTPROTECTED FROM THE RAIN, ONE MAINTENANCEDOOR SUCH AS 134AR, 136AR, OR AVIONICSACCESS DOOR 121BL IS OPEN AND REMAINSOPEN DURING SERVICING.

WARNING: STOP THE OPENING PROCEDURE IF THE REDWARNING LIGHT FLASHES. RESIDUAL PRESSURECOULD CAUSE THE DOOR TO OPEN WITH A SUDDENFORCE AND INJURE PERSONS AND/OR DAMAGE THEAIRCRAFT.

WARNING: PRIOR TO OPENING THE DOOR DURING NORMALOPERATION THE EMERGENCY CONTROL HANDLEMUST BE SET TO THE FULLY AFT POSITION.

Lifting the interior control handle releases the door locking mechanism.The movement of the handle is transferred via the gearbox, bellcranksand rods to the lifting and locking shafts.The lifting shaft eccentrically mounted arms equipped with rollers slidingin the door latches are retracted by the locking shaft, the door can belifted clear of the stops and swung outwards.

When the locking shaft is rotated, the bellcranks mounted on it andconnected by spring rod cylinders are pulled into a dead-center position,the mechanism being forced to overcome a center of pressure duringthis process.The door is damped by the door damper and emergency operationcylinder, guided by the two guide arms and, carried by the support arm,it swings outward in the direction of flight until it contacts the door buffer.The door stay mechanism locks the door in the open position.

NOTE: During ground operation in hot climates, ensure access door136AR (oval shaped) on the lower fuselage area is open if allother areas are closed on the aircraft.Failure to open access door 136AR when ground pre-conditioned (air conditioning) air is connected to the lowpressure connector ports on the lower side of the fuselage,forward and to the LH side of the access door 136AR can resultin pressurizing the fuselage interior pressurized zone areas. Thisis a dange condition, especially with no electrical power onaircraft.

REASON: With no electrical power on aircraft, the L1/R1 CourierPassenger/Crew Doors will not provide residual pressurered warning light flashing illumination to warn of fuselageinterior area (pressurized areas) are pressurized during dooropening procedure.

Always ensure electrical power is applied to aircraft duringground pre-conditioned air operation and oval shaped door136AR or 134AR (forward of 136AR door/aft of nose gear areaon the lower fuselage are open. Be safe and evaluate situationas hand to maintain safe conditions.


ATA 52ATA 52A300/A310A300/A310

52-52-4949

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsOpening from Outside - Normal Operation - Component ViewOpening from Outside - Normal Operation - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-5050

Flight CrewFlight Crew

Maintenance CrewMaintenance Crew

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew Doors Residual Pressure Warning System - MEL Residual Pressure Warning System - MEL


ATA 52ATA 52A300/A310A300/A310

52-52-5151

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsResidual Pressure Warning System - Component ViewResidual Pressure Warning System - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-5252

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsOpening from Courier Compartment - Component LocationsOpening from Courier Compartment - Component Locations

Operation

From Outside - Normal Operation


WARNING: BEFORE SUPPLYING AIR BY EXTERNAL SOURCE ORAPU MAKE CERTAIN THAT:- AT LEAST ONE FLT COMPT WINDOW OR CABIN

DOOR IS OPEN AND REMAINS OPEN DURINGSERVICING.

- IF THE A/C IS PARKED OUTSIDE AND IS NOTPROTECTED FROM THE RAIN, ONE MAINTENANCEDOOR SUCH AS 134AR, 136AR OR AVIONICSACCESS DOOR 121BL IS OPEN AND REMAINSOPEN DURING SERVICING.

NOTE: When opening the door from the outside, the position of theemergency escape slide release mechanism is of noimportance. The exterior control handle automatically unlocksthe emergency escape slide release mechanism via the gearboxto place it in the fully aft position.

Push the flap of the exterior control handle and lift the handle upwards.A jaw in the control handle moves an eccentric lever. The cam and discmechanism then moves the emergency control handle to the fully aftposition and locks the girt bar to the door thereby prohibiting escapeslide operation.

Residual-Pressure Warning SystemWhen there is an existence of residual pressure in the cabin, a warningis visually given at the passenger/crew doors.The warning is visible inside and outside the aircraft as a flashing redlight when:• The escape slide is DISARMED,• Engines 1 or 2 are off,• The residual differential pressure is more than 0.0025 bar (0.0362

psi).

Flashing Unit/Warning LightEach Courier Passenger/Crew Door has one flashing unit (red warninglight). The red warning light begins to flash when the residual differentialpressure exceeds 0.0025 bar (0.0362 psi). The red warning lights aredeactivated when the escape slides are activated at the L1/R1 doorlocations.


ATA 52ATA 52A300/A310A300/A310

52-52-5353

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsOpening from Courier Compartment - Component LocationsOpening from Courier Compartment - Component Locations


ATA 52ATA 52A300/A310A300/A310

52-52-5454

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew DoorsDoor Damper and Emergency Cylinder - ServicingDoor Damper and Emergency Cylinder - Servicing

FWD L1/R1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER - SERVICING

WARNING : SPECIAL PRECAUTIONS MUST BE FOLLOWED BEFORE CARRYING OUT MAINTENANCE ON OR NEAR PASSENGER/CREW DOORS. (REF. 52-10-00, P. BLOCK 301).

NOTE : The LH and RH door damper and emergency operating cylinder are identical in design and function.

1. Reason for the Job Replacement of diaphragm in percussion mechanism after emergencyoperation.

2. Equipment and Materials -------------------------------------------------------------------------- ITEM DESIGNATION -------------------------------------------------------------------------- A. Access Platform, 4.6 m (15 ft.) B. 701-2978000 Pin Safety - Passenger Door Damper and Emergency Operation Cylinder C. Torque Wrench, 1.0 m.daN (88.49 lbf.in) D. Seals for Percussion Mechanism E. Diaphragm F. Pin for Percussion Mechanism G. Lockwire, Corrosion-Resistant Steel, Dia. 0,63 mm (0.025 in.) H. Material No. 11-008 Cleaning Agents (Ref. 20-31-00)

Referenced Procedures - 11-32-52, P. Block 1 Doors - Interior Placards and Markings - 52-10-00, P. Block 301 Passenger/Crew Doors - Special Precautions - 52-10-13, P. Block 401 FWD Door Lining and Insulation

3. Procedure

A. Job Set-Up (1)Position access platform.

WARNING : SPECIAL PRECAUTIONS MUST BE FOLLOWED.

(2)Safety emergency escape slide, door damper and emergency operation cylinder and door warning system (Ref. 52-10-00, P. Block 301). (3)Remove upper support arm lining (Ref. 52-10-13, P. Block 401). (4)Check bottle gage to ensure that no pressure exists in cylinder. Vent pressure through fill valve.

B. Removal (1)Diaphragm (a)Lock the door damper and emergency operation cylinder with safety pin (16) PN 701-2978200 of safety pin assy PN 701-2978000. (b)Cut and remove lockwire from knurled screw (1) and release lever (2). (c)Remove broken pieces of shear pin (15).

C. Preparation for Installation (1)Remove and discard seals (7),(8),(9). (2)Clean removed parts using brush, clean lint-free cloth and cleaning agent (Mat. No. 11-008). (3)Dry components using clean dry air.

D. Installation (1)Diaphragm

WARNING : MAKE SURE THAT YOU INSTALL THE CORRECT (ALUMINUM) SHEAR PIN ON THE DOOR DAMPER PERCUSSION DEVICE. INSTALLATION OF AN INCORRECT SHEAR PIN WILL PREVENT OPERATION OF THE ACTUATOR IN EMERGENCY MODE.

(a)Install new shear pin (15). (b)Install spacer (12), spring (11) and new diaphragm (10) in body (14). (c)Install new seals (7),(8),(9) and guide (6).

CAUTION : WITH SCREWS (3),(5) FULLY TIGHTENED, A CLEARANCE OF BETWEEN 0.3 AND 0.4 MM (0.012 AND 0.016 IN.) EXISTS BETWEEN GUIDE (6)AND BODY (14).

(d)Position percussion mechanism (4) and install screws (3),(5). (e)Loosen knurled screw (1), position release lever (2) in guide (17) and tighten knurled screw (1).

CAUTION : WHEN REFILLING A BOTTLE DO NOT EXCEED THE MAXIMUM PRESSURE INDICATED ON THE PLACARD.

(f)Charge nitrogen bottle via charging valve (13) with dry air or nitrogen to the pressure indicated on the placard (Ref. 11-32-52, P. Block 1). CAUTION : DO NOT APPLY MORE THAN THE SPECIFIED TORQUE TO THE NUT OF THE FILLING VALVE. OVERTORQUE WILL CAUSE DAMAGE TO THE VALVE, AND WILL THUS CAUSE LEAKAGE OF NITROGEN FROM THE CYLINDER. NOTE : Placard is situated on the top of support arm or on door frame lining forward of support arm. (g)TORQUE the nut of the filling valve (13) to 1.0 m.daN (88.49 lbf.in). (h)Secure knurled screw (1) to release lever (2) using lockwire.

E. Test (1)Open and close door and check for dry air or nitrogen leaks.

F. Close-Up (1)Make certain that work area is clean and clear of tools and miscellaneous items of equipment. (2)Install upper support arm lining. (Ref. 52-10-13, P. Block 401).

WARNING : SPECIAL PRECAUTIONS MUST BE FOLLOWED.


ATA 52ATA 52A300/A310A300/A310

52-52-5555

Percussion StrikerMechanism

CAUTION:Check Clearance aftertightening guide 6 andbody 14 -See AMM 52-10-14-3/Block Page 301

Charging Valve -Gaseous Nitrogen

Diaphragm (disk)

Shear Pin

Safety Pin

A300/A310 L1/R1 Courier Passenger/Crew DoorsA300/A310 L1/R1 Courier Passenger/Crew Doors Percussion Mechanism - Servicing Percussion Mechanism - Servicing

TEMP(F) DEG+122+103 + 85 + 69 + 49 + 32 + 13 - 4 - 23 - 41


ATA 52ATA 52A300/A310A300/A310

52-52-5656

A300/A310 Courier Passenger/Crew DoorsA300/A310 Courier Passenger/Crew DoorsDoor Warning and ECAM Activation - General DescriptionDoor Warning and ECAM Activation - General Description

Description

The door warning system electrically monitors the "open/not locked" and"closed/locked" positions of the FWD Passenger/Crew Doors.

A residual pressure warning system is also installed in the FWDPassenger/Crew Doors (LH and RH).

Incorporated in each door are warning switches which are open whenthe door is opened or unlocked. Displays are provided for the flight crewon the cockpit center pedestal. These comprise two MASTER CAUTIONpushbutton switches, two Cathode Ray Tubes (CRTs) and a selectioncontrol panel, all of which form part of the Electronic Centralized AircraftMonitoring (ECAM) system.

The FWD Passenger/Crew Doors (LH and RH) are monitored by twoswitches indicating "door open" and "door not locked.

The residual pressure warning lights installed in the FWDPassenger/Crew Doors are in the form of red flashing lights. Thewarning lights convey a visual warning that residual pressure is presentin the aircraft.


ATA 52ATA 52A300/A310A300/A310

52-52-5757

A300/Some A310 Courier Passenger/Crew DoorsA300/Some A310 Courier Passenger/Crew DoorsDoor Warnings and ECAM Activation - General ViewDoor Warnings and ECAM Activation - General View


ATA 52ATA 52A300/A310A300/A310

52-52-5858

Some A310 Courier Passenger/Crew DoorsSome A310 Courier Passenger/Crew Doors Door Warning and ECAM Activation - General Description Door Warning and ECAM Activation - General Description

The door warning system electrically monitors the "open/not locked" and"closed/locked" positions of the FWD Passenger/Crew Doors (L1/R1).

A Residual Pressure Warning System is also installed in the FWDPassenger/Crew Doors (LH and RH).

Incorporated in each door are warning switches which are open whenthe door is opened or unlocked. Displays are provided for the flight crewon the cockpit center pedestal. These comprise a Warning Light DisplayPanel (WLDP), two Cathode Ray Tubes (CRTs) and a selection controlpanel, all of which form part of the Electronic Centralized AircraftMonitoring (ECAM) system.

The FWD Passenger/Crew Doors (LH and RH) are monitored by twoswitches indicating "door open" and "door is not locked."

The Residual Pressure Warning Light installed in each door is in theform of a red flashing light. The warning lightss convey a visual warningthat residual pressure is present in the aircraft.


ATA 52ATA 52A300/A310A300/A310

52-52-5959

Some A310 Courier Passenger/Crew Doors - Door Warnings andSome A310 Courier Passenger/Crew Doors - Door Warnings andECAM Activation - General ViewECAM Activation - General View


ATA 52ATA 52A300/A310A300/A310

52-52-6060

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew DoorsEscape Slides - General DescriptionEscape Slides - General Description

General DescriptionREF: ATA Chapter 25-61-20-0

The courier area is provided with two double-width passenger/crewdoors. Each door is fitted with an automatically deployed and inflatedescape slide to facilitate the emergency evacuation of all persons in theshortest possible time. Both slides are of the inflatable type, usingcylinder-stored compressed gas.The escape slides are mounted on the door structure, armed/disarmedby the door emergency escape slide release mechanism, and activatedby the door opening process.The passenger/crew doors (Z831 and Z841) are each fitted with a dual-lane escape slide allowing for two abreast evacuation. Thepassenger/crew door girt bar retaining mechanism controls actuationand deployment of the dual escape slides.The doors are equipped with an emergency escape slide warningsystem. When the emergency control handle is placed in the ARMEDposition and the interior control handle is lifted to open a door, anelectrical warning system on the door is activated providing audio andvisual warning signals (Ref. 52-73-00).

GeneralThe passenger/crew doors are structurally and mechanically similar, andare designed to be used as emergency exits. The opening and closingoperations are accomplished by interior and exterior control handles.The doors unlock upwards, open outwards, move forward parallel to thefuselage and lock in the open position.


ATA 52ATA 52A300/A310A300/A310

52-52-6161

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew DoorsEscape Slides - General ViewEscape Slides - General View


ATA 52ATA 52A300/A310A300/A310

52-52-6262

A300 L1/R1 Courier Passenger/Crew DoorsA300 L1/R1 Courier Passenger/Crew DoorsDual Lane Escape Slide - General ComponentsDual Lane Escape Slide - General Components

GeneralThe passenger/crew door escape slides are the dual-lane type having an automaticdeployment mode. The door-mounted dual escape slides are non- handed and completelyinterchangeable from LH to RH locations. Each escape slide consists of the followingcomponents:• Inflatable• Inflation System• Packboard Assembly• Decorative Cover

The inflatable comprises a rectangular structure formed by a pair of longitudinal 'body'tubes connected by mitered intersections to the sill and runway tubes. An additionallongitudinal tube, centrally located, provides positive lane division. Additional intermediatecross tubes minimize body tube twist or 'roll' motions under load to prevent the slidinglanes from being formed into 'troughs' which would adversely affect evacuation rate. Theair holding structure is constructed of heat-reflective, urethane-coated nylon.The air-holding tube upper surfaces, which can be contacted by evacuees footwear, areprotected by floor fabric to avoid penetration of the air-holding chamber.The sliding surface (floor) of the slide is attached as a taut membrane commencing at thetop of the sill tube, extending to the top of the runway tube, and to the inside of thelongitudinal tubes at varying heights along their length. The floor surface is not coated,thus providing a color contrast to positively outline the sliding lanes. This compositetube/floor structure can handle up to four evacuees per lane at any one time withoutcollapsing.Approximately the lower one-fourth of the slide body is curved to form a 'hook' contour fortransitioning the angle of the sliding surface at the runway end. This transition supplementsthe braking action of the urethane-coated deceleration panels at the runway end. Thedeceleration panel provides positive deceleration to the evacuees that assures they arebrought to on upright position and are able to walk away from the slide. Side rail tubes,located along the body tubes at the sill end, provide effective evacuee containment.

Grasp LinesIn order to facilitate use of the slide as a flotation device, grasp lines are fitted for survivorsin the water. The grasp lines are constructed of nylon webbing and are permanentyattached at intervals around the perimeter of the unit.

Re-entry TapeThe re-entry tape is provided as an aid in reboarding the aircraft if necessary after anemergency evacuation. Constructed of white webbing, the tape is permanently attached atone end to the sill tube of the inflatable and retained at intervals with Velcro and snapfasteners along the left hand body tube.

Restraint DevicesRestraint devices are used to control the deployment sequence by res- training theinflatable so that it remains folded in thirds until it becomes sufficiently pressurized toassure that it is fully extended when it first contacts the ground. The primary restraintmechanism is a precision tension fuse, frangible link, which separates at a predeter- minedforce value. Supplemental Velcro panels are used in conjunction with the tension fuse toassure repeatable, reliable deployment charac- teristics. These supplemental panels aresewn to webbing straps which are permanently attached to the inflatable, adjacent to thefrangible link attach points.

Relief ValveA relief valve is installed on the underside of the inflatable at the lower intermediate crosstube to limit the maximum pressure, due to internal gas temperature changes, tomaximum operational pressure.

No-fail HandlesIn case of pressure loss within the inflatable, no-fail handles, constructed of webbing, arelocated on both outer body tubes at the runway-end to allow for the deflated slide to beutilized as a chute. The handles are grasped by persons standing on the ground and theslide is extended to form a hand-held evacuation chute.

Lighting SystemThe lighting system consists of an integral power unit, lamp harness assemblies, and built-in test circuitry and test connector. The system is used to provide directional guidance forevacuees, as well as general lighting of the sliding surface and immediate area at the baseof the inflatable.• The power unit is composed of multiple primary cells. The cell stack internal wiring,

test circuiting and activation switch are encapsu- lated in a tubular housing. Thepower unit is located on the underside of the inflatable in a nylon fabric pouchattached to the inflation reservoir sling. To allow for the power unit to be easilychecked and replaced without disturbing the packed inflatable, the pouch is attachedoff center to the left and reinforced with a plastic cylinder insert. The power unit hasthe capability to provide power to the lamps for a maximum of one hour and aminimum of 10 minutes at low ambient temperature.

• Two electrical lamp harness assemblies are attached to the slide. Each assemblyruns down either side of the sliding surface and across the runway tube of theinflatable. The harness assemblies consist of incandescent tubular lamps soldered inparallel to insulated, flat, dual-lead, copper cable.

• The lighting system is automatically actuated during the slide deployment sequenceby means of a nylon switch pin attached to the actuating lanyard. The switch pin iswithdrawn from the power unit by dis- tention of the inflatable.


ATA 52ATA 52A300/A310A300/A310

52-52-6363

A300 L1/R1 Courier Passenger/Crew DoorsA300 L1/R1 Courier Passenger/Crew DoorsDual Lane Escape Slide - General ComponentsDual Lane Escape Slide - General Components


ATA 52ATA 52A300/A310A300/A310

52-52-6464

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew Doors Escape Slide Inflation System - General Description Escape Slide Inflation System - General Description

Inflation System

ReservoirThe inflation reservoir is installed in a urethane-coated nylon fabric slingwhich is attached by webbing straps to the underside of the inflatable.The reservoir is a composite structure consisting of a seam- lessaluminum liner reinforced with overlapping Kevlar filaments bonded withepoxy resin.Valve/RegulatorA valve/regulator assembly is installed on the inflation reservoir,maintaining discharge pressure approximately constant throughout theinflation cycle. A ball-type valve section retains the gas charge, thenprovides full flow when the valve is opened by tensioning of the inflationcable assembly as the inflatable falls from the pack during door openingin the emergency mode. Installed in the pulley housing of the valve are afrangible disc relief device to limit excessive pressure build-up in thestorage reservoir and a filler valve for charging the inflation reservoir. Formaintenance purposes, the valve is safetied by use of the lock pin.The valve incorporates a direct-reading temperature-compensated gage,which indicates the gas charge in the inflation reservoir in relation toambient temperature. When the inflation reservoir is fully charged, theindicator needle is within the limits of the green 'GO' band. The 'GO'band moves as a function of temperature. The indicator pointer movesas a function of the reservoir pressure.Manual Inflation AssemblyA manual inflation handle assembly serves as a backup system shouldthe slide not inflate automatically when deployed over the door sill. Themanual inflation handle is triangular in shape, constructed of redwebbing and secured with Velcro to the girt assembly. The handle isconnected through a quick-disconnect to the inflation cable which isconnected to the valve/regulator.

AspiratorsAspirator assemblies (two per slide) are located in the upper end on thesides of the body tubes of the inflatable. They comprise an inlet housingsection, which contains a nozzle array, and a cylindrical diffuser/mixingtube. The inlet housing is equipped with one-way flappers in the ambientair inlet, which act as a check valve. The aspirator functions as a suctiondevice to draw ambient air by the induction effect from the expansion ofhigh pressure stored gas through the nozzle array. Thus, inflation time israpid, and reservoir size minimized.Hose AssemblyA flexible hose assembly interconnects the inflation reservoir with theaspirators. The hose assembly is equipped with swivel end-fittings at it'svalve/regulator and aspirator ends.


ATA 52ATA 52A300/A310A300/A310

52-52-6565

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew DoorsEscape Slide Inflation System - ComponentsEscape Slide Inflation System - Components


ATA 52ATA 52A300/A310A300/A310

52-52-6666

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew DoorsEscape Slide Escape Slide Packboard Packboard and Cover - General Descriptionand Cover - General Description

Packboard AssemblyThe packboard is of composite construction and serves as a mountingplatform for the ejection system components, the lacing cover withrelease mechanism, and mounting brackets which attach the system tothe passenger/crew door structure.The packboard assembly, in conjunction with the lacing cover, providesstructural support and retains the folded inflatable with inflation reservoir.The lacing cover assembly consists of an upper and a lower half, eachconstructed of yellow urethane-coated nylon fabric. The upper half isattached to the packboard top edge and laced to the lower half.The lower half is retained to the lower edge of the packboard by thelacing cover release assembly. The release assembly permits the lacingcover to be freed from the packboard to enable the inflatable to drop(deploy).An ejection system, to assure positive downward deployment of theinflatable, is mounted on the inside surface of the packboard. Theejection system consists of a high-pressure air reservoir manifolded via acable-actuated inflation valve to an ejector bag.The bag is constructed of lightweight yellow urethane-coated nylonfabric, and is attached to the packboard beneath the upper lacing coverhalf.Decorative CoverA decorative cover attaches to the packboard to enclose the packed in-flatable for appearance purposes. The cover is constructed of Kevlarreinforced phenolic and is color coordinated with the aircraft interior.Quick-release latches provide an expedient means for removal.The decorative cover has a pressure gage viewing window to permitmonitoring of the inflation reservoir gas charge pressure. The escapeslide system is so designed that the cover can not be installed if theinflation valve/ regulator lock pin is installed.


ATA 52ATA 52A300/A310A300/A310

52-52-6767

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew DoorsDual Escape Slide (Packed) - General FeaturesDual Escape Slide (Packed) - General Features


ATA 52ATA 52A300/A310A300/A310

52-52-6868

A300/Some A310s L1/R1 Courier Passenger/Crew Doors Escape SlideA300/Some A310s L1/R1 Courier Passenger/Crew Doors Escape SlideDeployment Ejection Mode - OperationDeployment Ejection Mode - Operation

Operation - Deployment SequenceActivationWith the door Emergency Control Handle (ECH) placed in the ARMEDposition, the girt bar is mechanically fastened to the aircraft floor girt barfittings. Lifting the door interior control handle then initiates thedeployment sequence.

EjectionDuring the door's outward movement, the ejector bag actuation andlacing cover release cable assembly, which is attached to the undersideof the girt assembly, is tensioned, first releasing the latch mechanism(pawl) by extracting the disc and allowing the shaft located along thelower edge of the packboard to rotate, permitting release of the lacingcover.Immediately after the lacing cover release, the ejector bag inflatoractuator lever pin punctures the reservoir, allowing the gas charge toinflate the ejector bag. As the ejector bag inflates, it exerts a downwardforce on the packed inflatable and inflation reservoir, assuring a positiveejection from the decorative cover and packboard assembly.


ATA 52ATA 52A300/A310A300/A310

52-52-6969

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew Doors Escape Slide Lacing Cover Release - Component View Escape Slide Lacing Cover Release - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-7070

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew Doors Escape Slide Inflation - General Description Escape Slide Inflation - General Description

Escape Slide InflationInflationFor automatic activation of the system, the reservoir assembly must dropa distance of at least 600 mm below the door sill.As the inflatable is ejected from the decorative cover and packboardassembly, the inflation cable is tensioned and pulls open thevalve/regulator assembly, allowing the stored gas within the reservoir tobe discharged into the aspirators through the hose assembly.As the stored gas is expanded through the nozzles in the aspirators, apartial vacuum is created within the mixing tube section, which in turninducts ambient air into the aspirator inlet housing. This mixture ofambient air/stored gas charge then flows through the diffuser section ofthe aspirator mixing tube into the inflatable. When gas pressure in theinflatable rises, back flow of the gas mixture is initiated (that is, theaspirator stalls). This condition causes the flappers to close and theremaining stored gas charge 'tops off' the inflatable automatically to itsoperating pressure. The relief valve in the inflatable preventsoverpressurization.

Emergency OperationManual InflationA red triangular pull-handle is mounted on the right-hand side of the girtassembly to operate the inflation system manually if the automaticinflation is not initiated.Floatation DeviceSeparation of the inflatable from the ditched aircraft to permit its use as aflotation device is accomplished by first raising the Velcro secured girtextension cover flap and then pulling the release handle.

The slide is now free to drift away from the aircraft. The re-entry tapemay be used as a hand-line to hold the slide near the aircraft.


ATA 52ATA 52A300/A310A300/A310

52-52-7171

A300/Some A310s L1/R1 Courier Passenger/Crew DoorsA300/Some A310s L1/R1 Courier Passenger/Crew DoorsEscape Slide Deployment Sequence - Operation ViewEscape Slide Deployment Sequence - Operation View


ATA 52ATA 52A300/A310A300/A310

52-52-7272

Some A310s L1/R1 Courier Passenger/Crew DoorSome A310s L1/R1 Courier Passenger/Crew DoorDual Lane Escape Slide - Component DescriptionDual Lane Escape Slide - Component Description

GeneralThe passenger/crew door escape slides are the dual-lane type having anautomatic deployment mode. The dual escape slides are completelyinterchangeable from left to right hand FWD door locations. Eachescape slide consists of the following components:• Inflatable Slide Assembly• Inflation System• Packboard Assembly• Decorative Cover

Inflatable Slide AssemblyThe inflatable is constructed from radiant heat reflective polyurethanecoated nylon fabrics, pattern cut and bonded together to form apneumatic tube assembly. The tube assembly is equipped with a reliefvalve to prevent overinflation.A non-flammable, heat-resistant fabric provides the evacuees with asliding surface in the slide mode, or floor when used as a flotationdevice. The assembly is attached to the airplane by a metal girt barinserted through the girt panel.This panel provides a smooth entry onto the sliding surface during landevacuation. In the event of overwater deployment, the panel maintainsthe slide at the doorway and can be manually released when use of theslide as a flotation device is desired.When functioning as a slide, deceleration panels are provided at the endof each sliding lane to retard speed and aid in positioning the evacueeupright.Lighting assemblies are provided along both sides of the sliding lanesand across the toe of the slide to guide evacuees to the ground in caseof evacuation in darkness. The lights are automatically actuated whenthe slide is deployed.


ATA 52ATA 52A300/A310A300/A310

52-52-7373

Some A310s L1/R1 Courier Passenger/Crew DoorSome A310s L1/R1 Courier Passenger/Crew DoorDual Lane Escape Slide - Component ViewDual Lane Escape Slide - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-7474

Some A310s L1/R1 Courier Passenger/Crew DoorsSome A310s L1/R1 Courier Passenger/Crew Doors Escape Slide Inflation System - General Description Escape Slide Inflation System - General Description

Inflation SystemThe inflation system consists of a Kevlar-wound reservoir for storing thenitrogen/carbon dioxide gas mixture, a regulator valve for con- trollingoutput of gas from the reservoir, and hose assemblies for transferringthe gas to the aspirator inlet fittings.A regulator valve is installed on the reservoir. This valve incorporates anactuator assembly that maintains the spring-loaded piston in a closedposition when 'cocked'. A lanyard is installed during the cocking opera-tion and is used to trigger the action, releasing the spring tension andallowing the piston to move into an open position.The inflation hoses are flexible and made from a rubber compound,covered with two plies of braided Dacron polyester fiber and incorporateanodized aluminum fittings.The aspirator has a fiber-reinforced plastic body which incorporates aninlet swivel fitting, nozzle ring, flapper valve, and a non-positive closuredevice.Packboard Assembly and Decorative CoverThe packboard assembly is constructed from a Kevlar reinforcedhoneycomb laminate and will accept a Kevlar decorative cover. It isdesigned to conform to the limited dimensions of the stowage area. Afabric soft cover restrains the pack and a trigger mechanism isincorporated to release the packed assembly during door operation inthe emergency mode.

OperationActivationWhen the slide is installed on the door, the girt bar is inserted throughthe girt panel. Retention straps at each end of the girt panel retain thegirt bar. With the door Emergency Control Handle (ECH) placed in theARMED position, the girt bar is mechanically fastened to the aircraft floorgirt bar fittings. Lifting the door interior control handle then initiates thedeployment sequence.DeploymentA temperature compensating green/red (Go/No-Go) gage is visible froma view port in the decorative cover to indicate readiness of theevacuation system for deployment.Deployment and inflation of the unit are automatically initiated when thedoor is opened in the emergency mode. Upon reaching their travel limits,the release pin lanyards, which are attached to the girt, release thepacked assembly from the release rails, which remain attached to thedoor. As the packed assembly falls below the door sill, the packboardspeed lacing releases and the unit falls from the packboard.The firing lanyard actuates the regulator valve upon reaching its travellimit. At this time, primary gas is supplied to the aspirators and theinflation is initiated. The slide is inflated to its operating pressure withinthree seconds after actuation of the firing lanyard. A red manual back-upinflation handle, located on the girt, can be pulled if the unit is notautomatically inflated during door opening.


ATA 52ATA 52A300/A310A300/A310

52-52-7575

Some A310s L1/R1 Courier Passenger/Crew DoorsSome A310s L1/R1 Courier Passenger/Crew DoorsDual Lane Escape Slide (Packed) - Component ViewDual Lane Escape Slide (Packed) - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-7676

Some A310s L1/R1 Courier Passenger/Crew DoorsSome A310s L1/R1 Courier Passenger/Crew DoorsGirt Bar Assembly - Component Location and ControlsGirt Bar Assembly - Component Location and Controls

Girt AssemblyThe inflatable is connected to the aircraft door sill by means of theescape slide release mechanism girt bar. The girt bar is installed througha sleeve in the girt extension and retained by clips. The girt extension isattached to the girt assembly by a series of interlocking nylon cord loops(daisy chain).This series of cord loops is retained by a parachute pin installed throughthe center cord loop and then breakaway tied. A pull handle/cableattached to the parachute pin permits the pin to be withdrawn, thuscausing the girt and girt extension to separate.This girt release arrangement, located under a protective flap, providesan expedient means of detaching the inflated slide from the aircraft (e. g.to facilitate removal after deployment or to permit the inflatable to beused as an auxiliary flotation device).

Emergency Control MechanismThe escape slide release mechanism functions to activate emergencyopening of the door and initiate the escape slide deployment process.The mechanism is manually operated by the two-position EmergencyControl Handle (ECH). The ECH is connected to the door lockingmechanism so that the handle can only be repositioned when the door isclosed and locked. A safety pin secures the ECH in the DISARMEDposition only. The ECH is connected by rods to the stop lever and thegirt bar control mechanism.


ATA 52ATA 52A300/A310A300/A310

52-52-7777

Some A310s L1/R1 Courier Passenger/Crew DoorsSome A310s L1/R1 Courier Passenger/Crew DoorsGirt Bar Control - Component LocationGirt Bar Control - Component Location


ATA 52ATA 52A300/A310A300/A310

52-52-7878

A300 L1/R1 Courier Passenger/Crew Doors - Emergency Door OpeningA300 L1/R1 Courier Passenger/Crew Doors - Emergency Door OpeningDamper and Operation Cylinder - GeneralDamper and Operation Cylinder - General

Door Damper and Emergency Operation CylinderThe door damper and emergency operation cylinder, installed on thedoor support arm, hydraulically forces the door open upon activation of apercussion device.The release lever of the percussion device is activated by the ECHcontrolled stop lever.For maintenance purposes, the percussion device must be safetied byinsertion of a safety pin and the release lever displaced.After emergency operation, the metal diaphragm within the percussiondevice must be replaced and the emergency operation cylinder must beserviced.


ATA 52ATA 52A300/A310A300/A310

52-52-7979

A300 L1/R1 Courier Passenger/Crew Doors - Percussion (Firing)A300 L1/R1 Courier Passenger/Crew Doors - Percussion (Firing)Device/Emergency Door Opening - Component ViewDevice/Emergency Door Opening - Component View


ATA 52ATA 52A300/A310A300/A310

52-52-8080

A300 L1/R1 Courier Passenger/Crew Doors - DoorA300 L1/R1 Courier Passenger/Crew Doors - DoorOperation Modes - General DescriptionOperation Modes - General Description

Door OperationNormal opening from insideFor normal operation, the ECH must be in the DISARMED position, withsafety pin installed. Lifting the door interior control handle releases thedoor locking mechanism verified by an UNLOCKED indication. The liftingshaft eccentrically-mounted arms rotate in the fuselage door framefittings to lift the door free of the stops.As the door is lifted, the retracted stop lever by-passes the door damp-er and emergency operation cylinder percussion mechanism releaselever, so that a damping action only results as the door is pushed open.The door stay mechanism, located on the support arm, locks the door inthe open position.Normal opening from outsideWhen opening the door from outside, the ECH is automatically placed inthe DISARMED position by a direct connection with the exterior controlhandle. The door opening then functions identically to the methoddescribed for normal opening from inside.

Emergency openingEmergency opening of the door is possible only from inside. Placing theECH in the ARMED position swivels the stop lever to a position immedi-ately beneath the percussion mechanism release lever andsimultaneously secures the girt bar to the floor fittings.Lifting the interior control handle initiates the opening sequence that issimilar to the normal opening, with the following differences:• As the door is lifted, the stop lever contacts the percussion device

release lever, forcing the striker to pierce a metal diaphragm,releasing compressed gas into the actuator. The actuator thenextends, forcing the door open.

• As the door, with escape slide attached and girt secured to the floor,opens outward, tension is applied to the escape slide release cableto initiate the deployment sequence.

ClosingPress door stay release button and simultaneously pull door, usingassist handles, towards the door frame. Pulling the interior controlhandle downwards lowers and locks the door. The locking indicatorschange from UNLOCKED to LOCKED.


ATA 52ATA 52A300/A310A300/A310

52-52-8181

A300 L1/R1 Courier Passenger/Crew Doors - Door Operation ModesA300 L1/R1 Courier Passenger/Crew Doors - Door Operation ModesGeneral View of Controls/MechanismsGeneral View of Controls/Mechanisms


ATA 52ATA 52A300/A310A300/A310

52-52-8282

A300/A310 Cargo Compartment Doors - General DescriptionA300/A310 Cargo Compartment Doors - General Description

General

LocationBULK, FWD and AFT cargo compartment doors are located on lower rightfuselage side:• FWD cargo compartment door is located in zone 811 between

STA1454/FR20A and STA1729/FR25A.• AFT cargo compartment door is located in zone 812 between

STA3977/FR59A and STA4176/FR63A.• BULK cargo compartment door is located in zone 813 between

STA4362/FR67 and STA4468/FR69.The Main Deck Cargo (MDC) door (zone 835) is located on the upper LH side ofthe fuselage between STA1446/FR20 and STA1817/FR33.

General DescriptionFWD and AFT Cargo Compartment DoorsThe FWD and AFT cargo compartment doors are mechanically and structurallysimilar, differing only in size and in the number of hinge arms and locking units.They are of conventional monocoque construction and consist mainly of frames,longerons, stringers and inner and outer skin.The cargo compartment doors open outward and upward and are mechanicallylocked and unlocked by means of the operating handles. They open or closehydraulically by means of door actuators pressurized by the electrically drivenpump of the yellow hydraulic system.An alternate procedure permits operation of the FWD and AFT cargocompartment doors by means of the hydraulic hand pump installed in the RHmain wheel well.When the operating handle is in the locked position, the limit switch of the doorcontrol system, located in the lower LH edge of each cargo compartment door,inhibits a hydraulic operation of the door actuator.This limit switch is activated by the rotation of the torque shaft. When the door silllatches are lowered, the associated limit switches inhibit the closing of the FWDand AFT cargo compartment doors.

The two limit switches of the door warning system, installed in each cargocompartment door and activated by the locking mechanism, send signals to theElectronic Centralized Aircraft Monitor (ECAM) system to indicate thelocked/unlocked condition of the FWD and/or AFT cargo compartment door inthe flight compartment.The red warning light, located near the operating handle, flashes when residualpressure is present in the FWD or AFT cargo compartment.

Main Deck Cargo (MDC) DoorThe MDC door structure is of conventional monocoque light alloy construction,consisting mainly of frames, longerons, stringers and inner and outer skins.The MDC door is manually locked/unlocked and hydraulically latched/ unlatchedby means of a latching actuator. It opens outwards and upwards and closes bymeans of the door actuator. Both actuators are pressurized by the electricallydriven pump of the yellow hydraulic system.An alternate procedure permits manual operation of the MDC door by means ofthe hydraulic hand pump installed in the RH main wheel well.The limit switches of the door warning system installed in the MDC door supply awarning signal to the ECAM system, when the MDC door is not locked orcorrectly closed.

NOTE: For detailed description of the MDC door refer 52-36-00.

DataFWD Cargo Compartment DoorSize : 2739 x 2385 mm (108 x 94 in.)Weight : 190 kg (419 lb.)AFT Cargo Compartment DoorSize : 1848 x 2400 mm (72 x 94.5 in.)Weight : 139 kg (306 lb.)BULK Cargo Compartment DoorSize : 1100 x 940 mm (43 x 37 in.)Weight : 32 kg (70.4 lb.)Upper Deck Cargo DoorSize : 3580 x 2560 (141 x 101 in.)Weight : 550 kg (1212.5 lb.)


ATA 52ATA 52A300/A310A300/A310

52-52-8383

A300/A310 Forward Cargo Compartment Door - Component LocationA300/A310 Forward Cargo Compartment Door - Component Location


ATA 52ATA 52A300/A310A300/A310

52-52-8484


-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- FWD CARGO COMPARTMENT DOOR 132 811 52-31-11 HINGE ARM 132 811 52-31-11 ACTUATOR ATTACHMENT FITTING 132 811 52-31-11 CARGO DOOR LINING 811AZ 132 811 52-30-13 CARGO DOOR LINING 811BZ 132 811 52-30-13 DRAIN VALVES 132 52-30-00 DOOR SEAL 132 811 52-30-18 ACCESS DOOR 811CR 52-30-00 ACCESS PANEL 811DR 52-30-00 ACCESS PANEL 811ER 52-30-00 ACCESS PANEL 811AR 52-30-00 ACCESS PANEL 811BR 52-30-00 HOISTING LUG 132 52-31-11 ROD 132 811AR 52-30-21 HANDLE SPRING UNIT 132 811DR, 811ER 52-30-21 OPERATING HANDLE 132 811CR, 52-30-21 TORQUE SHAFT 132 811AR, 52-30-21 811BR LOCKING UNIT 132 811AR, 52-30-21 811BR -SPRING UNIT 132 811AR, 52-30-21 811BR -BELLCRANK 132 811AR, 52-30-21 811BR -LINK 132 811AR, 52-30-21 811BR -LOCKING HOOK 132 811AR, 52-30-21 811BR -INDICATOR FLAG 132 811AR, 52-30-21 811BR SWITCH ACTUATING ASSEMBLY 132 811BR 52-30-21


ATA 52ATA 52A300/A310A300/A310

52-52-8585



ATA 52ATA 52A300/A310A300/A310

52-52-8686

A300 AFT Cargo Compartment Door - Component LocationA300 AFT Cargo Compartment Door - Component Location

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- AFT CARGO COMPARTMENT DOOR 152 812 52-32-11 HINGE ARM 152 812 52-32-11 ACTUATOR ATTACHMENT FITTING 152 812 52-32-11 CARGO DOOR LINING 812BZ 152 812 52-30-13 CARGO DOOR LINING 812CZ 152 812 52-30-13 SWITCH ACTUATING ASSEMBLY 152 812BR 52-30-21 DRAIN VALVES 152 52-30-00 DOOR SEAL 152 812 52-30-18 ACCESS DOOR 677FR 152 52-30-00 ACCESS PANEL 812DR 152 52-30-00 ACCESS PANEL 812ER 152 52-30-00 ACCESS PANEL 812AR 152 52-30-00 ACCESS PANEL 812BR 152 52-30-00 HOISTING LUG 152 812 52-30-00 ROD 152 812AR 52-30-21 HANDLE SPRING UNIT 152 812DR, 52-30-21 812ER OPERATING HANDLE 152 677FR 52-30-21 TORQUE SHAFT 152 812AR, 52-30-21 812BR LOCKING UNIT 152 812AR, 52-30-21 812BR -SPRING UNIT 152 812AR, 52-30-21 812BR -BELLCRANK 152 812AR, 52-30-21 812BR -LINK 152 812AR, 52-30-21 812BR -LOCKING HOOK 152 812AR, 52-30-21 812BR -INDICATOR FLAG 152 812AR, 52-30-21


ATA 52ATA 52A300/A310A300/A310

52-52-8787



ATA 52ATA 52A300/A310A300/A310

52-52-8888


-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- AFT CARGO COMPARTMENT DOOR 152 812 52-32-11 HINGE ARM 152 812 52-32-11 ACTUATOR ATTACHMENT FITTING 152 812 52-32-11 INSULATION MAT 812AZ 152 812 52-30-13 SWITCH ACTUATING ASSEMBLY 152 812BR 52-30-21 DRAIN VALVES 152 52-30-00 DOOR SEAL 152 812 52-30-18 ACCESS DOOR 677FR 152 52-30-00 ACCESS PANEL 812DR 152 52-30-00 ACCESS PANEL 812ER 152 52-30-00 ACCESS PANEL 812AR 152 52-30-00 ACCESS PANEL 812BR 152 52-30-00 HOISTING LUG 152 812 52-30-00 ROD 152 812AR 52-30-21 HANDLE SPRING UNIT 152 812DR, 52-30-21 812ER OPERATING HANDLE 152 677FR 52-30-21 TORQUE SHAFT 152 812AR, 52-30-21 812BR LOCKING UNIT 152 812AR, 52-30-21 812BR -SPRING UNIT 152 812AR, 52-30-21 812BR -BELLCRANK 152 812AR, 52-30-21 812BR -LINK 152 812AR, 52-30-21 812BR -LOCKING HOOK 152 812AR, 52-30-21 812BR -INDICATOR FLAG 152 812AR, 52-30-21 812BR


ATA 52ATA 52A300/A310A300/A310

52-52-8989



ATA 52ATA 52A300/A310A300/A310

52-52-9090


-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- AFT CARGO COMPARTMENT DOOR 152 812 52-32-11 HINGE ARM 152 812 52-32-11 ACTUATOR ATTACHMENT FITTING 152 812 52-32-11 INSULATION MAT 812AZ 152 812 52-30-13 SWITCH ACTUATING ASSEMBLY 152 812BR 52-30-21 DRAIN VALVES 152 52-30-00 DOOR SEAL 152 812 52-30-18 ACCESS DOOR 677FR 152 52-30-00 ACCESS PANEL 812DR 152 52-30-00 ACCESS PANEL 812ER 152 52-30-00 ACCESS PANEL 812AR 152 52-30-00 ACCESS PANEL 812BR 152 52-30-00 HOISTING LUG 152 812 52-30-00 ROD 152 812AR 52-30-21 HANDLE SPRING UNIT 152 812DR, 52-30-21 812ER OPERATING HANDLE 152 677FR 52-30-21 TORQUE SHAFT 152 812AR, 52-30-21 812BR LOCKING UNIT 152 812AR, 52-30-21 812BR -SPRING UNIT 152 812AR, 52-30-21 812BR -BELLCRANK 152 812AR, 52-30-21 812BR -LINK 152 812AR, 52-30-21 812BR -LOCKING HOOK 152 812AR, 52-30-21 812BR -INDICATOR FLAG 152 812AR, 52-30-21 812BR


ATA 52ATA 52A300/A310A300/A310

52-52-9191



ATA 52ATA 52A300/A310A300/A310

52-52-9292

A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsMajor Components LocationMajor Components Location

General Description

The FWD and AFT cargo compartment doors comprise the following majorcomponents:

Door Structure, Door Seal and Drain ValvesThe FWD and AFT cargo compartment doors are structurally similar, differingonly in size and in number of hinge arms and door frames.The inner and outer skins are manufactured from fabricated sheet metal withintegral vertical and horizontal edge members, frames and longitudinal beams.All parts are riveted together to form a torsion-resistant door.The door frames are milled to match the fuselage contour with the extendedframes forming the hinge arms at the upper ends. The lower ends are machinedto accommodate the door locking mechanisms.

The outer skin of each cargo compartment door is provided with a recess forinstallation of the operating handle. This recess is covered by an access panel.Hoisting lugs are installed in the outer skin of each cargo compartment door tofasten the sling used for removal/installation of the door by means of a crane.The attachment fitting of the door actuator is located on the inside of the cargocompartment door near the top horizontal edge member. Fittings, attached to theforward and aft door frames, permit the installation of support struts duringservicing procedures.Access panels and covers are provided at various locations on the outer skin ofeach cargo compartment door to facilitate removal/installation, adjustment/testand/or servicing of the locking mechanism and hydraulic components. The doorseal, made from special rubber hose, is attached on the inside of each cargocompartment door by means of retainers, screws and anchor nuts. When thecargo compartment door is closed, the door seal is pressed on a bulb sectioninstalled on the door frame of the fuselage, providing a pressure-tight interface.The FWD cargo compartment door is equipped with 11 flap-type drain valvesand the AFT cargo compartment door with 5 flap-type drain valves. These valvesare installed in the longeron near the outer skin. To allow liquid to escape, thedrain valves are open on the ground. During flight the valves are closed bydifferential pressure.

Door Lining and Insulation Pre S.B. 25-2052/Some A310sThe insulation on the FWD cargo compartment door comprises two insulationmats which are installed on the inside of the door by means of Velcro tape,washers and quick-release fasteners.The AFT cargo compartment door has one insulation mat secured to thedoor inner skin with Velcro tape, plastic press pins, washers and pins orquick-release fasteners.

Door Lining and Insulation Post S.B. 25-2052/Some A310sThe FWD and AFT cargo door linings comprise two parts attached withVelcro tapes and quick-release fasteners on the inner skin of theFWD and AFT cargo compartment door. Each cargo door lining consists ofa fire protection lining made of prepreg and a self-adhesive insulationfoam mounted on the inside of the lining.


ATA 52ATA 52A300/A310A300/A310

52-52-9393

A300/A310 FWD and AFT Cargo Compartment DoorA300/A310 FWD and AFT Cargo Compartment DoorInterlock Switch and Actuating MechanismInterlock Switch and Actuating Mechanism


ATA 52ATA 52A300/A310A300/A310

52-52-9494

A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment Doors Door Locking Mechanism Door Locking Mechanism

General

Door Locking MechanismThe locking mechanism is installed in the lower section of each cargocompartment door and is actuated by the operating handle. This handleis retained in a recess of the door outer skin by means of a catch.The locking mechanism operates locking hooks, the interlock switchmechanism of the yellow hydraulic system and the limit switch of thedoor warning system. The operating handle is connected via a rod to themulti-sectioned torque shaft. The torque shaft is joined via flexible discsto the flanged bearings, located in fork ends of each door frame.The torque shaft levers, parts of the flanged bearings, connect thetorque shaft to the locking units, each consisting of a spring unit,bellcrank, link, indicator flag and locking hook.A handle spring unit is installed between operating handle and doorframe. This spring unit secures the operating handle in its respectiveposition. The adjustable stop bolts are installed near the locking hooks tointerrupt the closing movement when the lower edge of the cargocompartment door is flush with the fuselage contour.


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A310A310

A300A300


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A300/A310 FWD and AFT Cargo Compartment DoorA300/A310 FWD and AFT Cargo Compartment DoorUnlocking/Opening OperationUnlocking/Opening Operation

Unlocking and Opening of FWD and AFT Cargo CompartmentDoorsWhen the pushbutton in the operating handle is pressed, a catch isreleased allowing the operating handle to move out slightly from itsrecess under the influence of the spring unit. A limit switch 16WS (FWD)or 34WS (AFT) actuated by the catch is opened to provide a signal tothe ECAM system and, on the A300 and some A310s, illuminates theMASTER CAUTION lamp located on the main instrument panel. Onsome A310s, the signal illuminates the DOOR lamp on the WarningLight Display Panel. Simultaneously, a single chime aural warningsounds.

As the operating handle is pulled down to its maximum extent, the rod,mounted on the operating handle, rotates the torque shaft which, in turn,releases the locking elements. When the operating handle is fullyextended, the handle spring unit moves overcenter, prohibiting thehandle movement up to dead-center position.The maximum operating handle movement is limited to approximately108 degrees by a stop located in the handle spring unit, at which positionthe locking hooks are clear of the fuselage fittings. The unlockingsequence occurs at the following approximate angles of operatinghandle movement:

11 degrees - Spring units attached to lever assemblies, which aremounted on the torque shaft, transfer torque shaftrotation via bellcranks and links to locking hooks.

36 degrees - Bellcranks and links move overcenter.44 degrees - Simultaneously, locking hooks start to clear fuselage

fittings and indicator flags start to project from door.102 degrees - Rotation of torque shaft, transferred via a switch

mechanism, operates limit switch 21MJ (FWD) or22MJ (AFT) to energize the electro-mechanicalselector valve 9MJ or 10MJ and permits hydraulicpressure to the door actuator when the selector ofmanual selector valve 15MJ (FWD) or 16MJ (AFT) isset to the OPEN position.

With the FWD or AFT cargo compartment door unlocked, setting theselector to the OPEN position will route 28 V DC via the series-connected limit switches to the electro-mechanical selector valve 9MJ or10MJ.Hydraulic pressure is then applied to the actuator, which extends to openthe FWD or AFT cargo compartment door. When the door is fully openand locked, the actuator limit switch 7MJ (FWD) or 8MJ (AFT) closesand the green indicator light on the selector panel comes on.The selector is spring-loaded to the STOP position and, therefore, mustbe held in the OPEN position during opening of the FWD or AFT cargocompartment door until the green indicator light comes on.


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NOTE: A310 ShownNOTE: A310 Shown

A300-600 identical to A310 Cargo DoorA300-600 identical to A310 Cargo DoorSystem / A310 AFT Cargo Door Fairing notSystem / A310 AFT Cargo Door Fairing not

installed on A300-600 AFT Cargo Doorinstalled on A300-600 AFT Cargo Door

FairingFairing


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsClosing/Locking OperationClosing/Locking Operation

General Description

Closing and Locking of FWD and AFT Cargo Compartment DoorsSetting the selector of manual selector valve 15MJ (FWD) or 16MJ(AFT) to the CLOSED position will cause the door actuator to retract andthe FWD or AFT cargo compartment door to close. The green indicatorlight goes off. The FWD or AFT cargo compartment door is locked byreturning the operating handle fully into its recess to latch it in position.During the movement of the operating handle, the sequence of eventsrelative to the approximate position of the operating handle is as follows:• 6 degrees - Rotation of torque shaft operates limit switch 21MJ

(FWD) or 22MJ (AFT) to de-energize the electro-mechanical selector valve 9MJ or 10MJ and to shut offhydraulic pressure to the door actuator.

• 64 degrees - Locking hooks engage with fuselage lock fittings andindicator flags are flush with cargo door surface.

• 72 degrees - Links and bellcranks move overcenter. Overcentertravel is limited by a stop.

• 97 degrees - Rotation of the torque shaft causes an operation inthe switch actuating mechanism, activating limit switch14WS (FWD) or 32WS (AFT) of the door warningsystem.

NOTE: Limit switch may be activated when the roller of the switch levercontacts the fuselage stop, producing a force which positionsthe stop of the switch lever with the roller of the limit switch andloads the torsion spring mounted on the lever assy.If the FWD or AFT cargo compartment door is not correctlyclosed but the operating handle is locked in the recess, this forcecannot be produced, because the roller of the switch lever is notin contact with the fuselage stop. The torsion spring thereforedisengages the stop of the switch lever from the contact of limitswitch.

When the operating handle of the FWD and/or AFT cargo compartmentdoor is returned to, and locked in the recess, limit switches 16WS (FWD)and 34WS (AFT) are activated.A ground signal is fed via limit switches 14WS and 16WS (FWD), 32WSand 34WS (AFT) to the ECAM system.When the cargo compartment doors are correctly closed and locked, theMASTER CAUTION lamp located on the main instrument panel (or theDOOR light on the Warning Light Display Panel on some A310s) goesoff.


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NOTE: A310 ShownNOTE: A310 Shown

A300-600 identical to A310 Cargo DoorA300-600 identical to A310 Cargo DoorSystem / A310 AFT Cargo Door FairingSystem / A310 AFT Cargo Door Fairingnot installed on A300-600 AFT Cargonot installed on A300-600 AFT Cargo

DoorDoor

FairingFairing

A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsNormal OperationNormal Operation


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsManual Opening/Closing with Hand PumpManual Opening/Closing with Hand Pump

General Operation

Opening and Closing of FWD and AFT Cargo Compartment Doors withHand PumpNOTE: A second person is required to operate the hand pump.In the event of non-availability of hydraulic power, the actuator can beextended and retracted by means of a hand pump located in the RHmain wheel well.Prior to opening or closing the door when utilizing the hand pump, makecertain that selector valves 9MJ (FWD) and 10MJ (AFT) in the RH mainwheel well are closed.To open the door, depress pushbutton on operating handle and pullhandle downwards to its stop. Make certain that all indicator flags areextended. Set the selector switch to the OPEN position and operate thehand pump until the cargo compartment door is fully open.NOTE: A considerable increase in force is felt on the hand pump handle

if the door actuator is in its extended, locked position.To close the door, set the selector switch to CLOSE and operate thehand pump until the door is closed. Lock the door by returning theoperating handle to its recess and lock it in position. Make certain that allindicator flags are returned and flush with the door.NOTE: When closing the door from an intermediate position, the door

will first move in the open direction until suffiecient pressure isbuilt up in the sequence valve to reach the changeover position;the door will then close.

Opening by Means of Hand Pump

NOTE: A second person is required to operate the hand pump.

• Open access panel 811CR (FWD) or 812CR (AFT).

WARNING: STOP THE OPENING PROCEDURE IF THE REDWARNING LIGHT FLASHES. RESIDUAL PRESSURECOULD CAUSE THE DOOR TO OPEN WITH A SUDDENFORCE AND INJURE PERSONS AND/OR DAMAGE THEAIRCRAFT.

• If the red warning light CABIN PRESSURE flashes, stop any airsupply to passenger compartment and wait until warning light goesoff.

• Depress pushbutton on operating handle and pull operation handledownwards from recess.

• Check that all indicator flags are extended.• Open access panel 122CR (FWD) or 152KR (AFT).• Set lever of selector valve 9MJ (FWD) and 10MJ (AFT) located in

RH main wheel well to manual operation.• Turn selector to open position and hold.• Operate hand pump located in RH main wheel well until the FWD or

AFT cargo compartment door is fully open and the green indicatorlight comes on.

• Release selector. Selector returns to STOP position.

Closing by Means of Hand Pump

NOTE : A second person is required to operate the hand pump.

• Make certain that lever of selector valve 9MJ (FWD) and 10MJ(AFT) located in RH main wheel well is set to manual operation.

• Turn selector to CLOSE position and hold.• Operate hand pump located in RH main wheel well until the FWD or

AFT cargo compartment door is closed and the green indicator lightgoes off.

• Release selector. Selector returns to STOP position.• Push operating handle upwards into the recess panel until it locks.• Check that all indicator flags are retracted and flush with cargo door.• Set lever of selector valve 9MJ (FWD) and 10MJ (AFT) located in

RH main wheel well to normal position.• Close access panels 811CR or 812CR and 122CR or 152KR.


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Opening by Means of Crane

NOTE : This procedure must be used in case of hydraulic system failureor in case of a defective door actuator.

• Attach cargo door sling PN 98A52307529001 to crane.• Peel off self adhesive patch (15) and remove hoisting lug (13) from

lower hoist fitting (14) and re-install hoisting lug (13) with eyeoutwards.

• Open access panel 811CR (FWD) or 812CR (AFT).

WARNING: STOP THE OPENING PROCEDURE IF THE REDWARNING LIGHT FLASHES. RESIDUAL PRESSURECOULD CAUSE THE CARGO COMPARTMENT DOOR TOOPEN WITH A SUDDEN FORCE AND INJURE PERSONSAND/OR DAMAGE THE AIRCRAFT.

• If the red warning light CABIN PRESSURE flashes, stop any airsupply to passenger compartment and wait until warning light goesoff.

• Depress pushbutton on operating handle and pull operating handledownwards from recess.

• If door actuator is still installed, proceed as follows:• Open access panel 122CR (FWD) or 152KR (AFT).• Turn selector to OPEN position and hold.• Attach fastener (12) of cargo door sling (11) to lower hoisting lug

(14) and lift cargo compartment door by means of crane to fully openposition.

• Release selector, if turned. Selector returns to STOP position. Closeaccess panel 122CR (FWD) or 152KR (AFT).

• Install support struts PN 98A52307523000 on cargo compartmentdoor.

• Replace defective door actuator (Ref. 52-33-18, P. Block 401).

Closing by Means of Crane (Ref. Fig. 009)

NOTE: This procedure must be used when the FWD or AFT cargocompartment door is in open position and cannot be closed in case of adefective door actuator or hydraulic system failure.

• Attach cargo door sling (11) PN 98A52307529001 to crane.• Peel-off self adhesive patch (15) and remove lower hoisting lug (13)

from hoist fitting (14) and re-install hoisting lug (13) with eyeoutwards.

• Attach fastener (12) of cargo door sling (11) to lower hoisting lug(14) and use crane until cargo door sling (11) is tight.

• Deactivate yellow hydraulic system (Ref. 29-10-00, P. Block 301).• Disconnect hydraulic pipes from defective component and blank off

open ends.

CAUTION: AFTER DISCONNECTION OF HYDRAULIC PIPES FROMFAILED COMPONENT, IT IS NECESSARY TO INSTALLPRESSURE BLANKS TO PIPE ENDS AND COMPONENTCONNECTIONS.

• Remove door actuator from cargo door fitting and from actuatorbeam of floor structure (Ref. 52-33-18, P. Block 401).

• Close cargo compartment door slowly by means of crane.• Remove cargo door sling (11) from cargo compartment door.• Remove lower hoisting lug (13) and re-install in hoist fitting (14) with

eye inwards. Blank off hoisting point with self adhesive patch (15).• Push cargo compartment door in fully closed position by means of

man power and push operating handle upwards into the recess untilit locks.

• Close access panel 811CR (FWD) or 812CR (AFT).


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Opening and Closing Procedure

CAUTION: WHEN WIND SPEED IS EXPECTED TO EXCEED 60KNOTS:- DO NOT OPEN FWD OR AFT CARGO

COMPARTMENT DOOR.- IF FWD OR AFT CARGO COMPARTMENT DOOR IS

OPEN, CLOSE IMMEDIATELY.

Opening by Means of Electric Hydraulic Pump• Make certain that the aircraft electrical network is energized and that

electronics racks ventilation is correct.• Open access panel 811CR (FWD) or 812CR (AFT).

WARNING: STOP THE OPENING PROCEDURE IF THE REDWARNING LIGHT FLASHES. RESIDUAL PRESSURECOULD CAUSE THE CARGO COMPARTMENT DOOR TOOPEN WITH A SUDDEN FORCE AND INJURE PERSONSAND/OR DAMAGE THE AIRCRAFT.

• (3)If the red warning light CABIN PRESSURE flashes, stop any airsupply to passenger compartment and wait until warning light goesoff.

• (4)Depress pushbutton on operating handle and pull operationhandle downwards from recess.

• (5)Check that all indicator flags are extended.• (6)Open access panel 122CR (FWD) or 152KR (AFT).• (7)Turn selector to OPEN position and hold until FWD or AFT cargo

compartment door is fully open and the green indicator light comeson.

• (8)Release selector. Selector returns to STOP position.

Closing by Means of Electric Hydraulic Pump

NOTE: Make certain that door sill latches are raised (Ref. 52-35-00, P.Block 1).

• (1)Make certain that the aircraft electrical network is energized andthat electronics racks ventilation is correct.

• (2)Turn selector to CLOSE position and hold until the FWD or AFTcargo compartment door is closed and the green indicator light goesoff.

• (3)Release selector. Selector returns to STOP position.• (4)Push operating handle upwards into the recess until it locks.• (5)Check that all indicator flags are retracted and flush with cargo

door.• (6)Close access panels 811CR or 812CR and 122CR or 152KR.


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A300/A310 FWD and AFT Cargo Compartment DoorA300/A310 FWD and AFT Cargo Compartment DoorHydraulic System -General and Component Hydraulic System -General and Component FINsFINs

1. General The FWD and AFT cargo compartment doors are mechanically locked or unlocked and hydraulically opened or closed. The hydraulic system of FWD and AFT cargo compartment door (door hydraulic system) is connected to the yellow hydraulic system. Operating pressure is 3000 psi (206 bar). If the electric pump fails, the system can be pressurized by a hand pump. WARNING : THE HYDRAULIC SYSTEM IS FILLED WITH HYDRAULIC FLUID ACCORDING TO NSA 307110 (SKYDROL LD4, HYJET IV ETC).

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- 3054 CHECK VALVE 3055 CHECK VALVE 3060 MANIFOLD 148 148XZ 29-13-37 3083 ELECTRIC PUMP CHECK VALVE 148 148XZ 29-24-13 3084 ELECTRIC PUMP DELIVERY FILTER 148 148XZ 29-24-12 3085 HAND PUMP 148 148XZ 52-33-11 3086 PRESSURE RELIEF VALVE 122 148XZ 52-33-22 3125 BRK YELLOW POWER ACCU 148 148RZ 32-44-11 3126 BRK YELLOW POWER ACCU 148 148RZ 32-44-11 3389 CHECK VALVE 132 811 52-33-13 3390 CHECK VALVE 152 812 52-33-14 3732 FILTER SCREEN 122 811 3733 FILTER SCREEN 152 812 3734 SEQUENCE VALVE 132 811 52-33-24 3735 SEQUENCE VALVE 152 812 7MJ DOOR ACTUATOR 132 811 52-33-18 8MJ DOOR ACTUATOR 152 812 52-33-18 9MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12


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General Description

NOTE: Designations in brackets refer to the AFT cargo compartmentdoor.

For operation of the FWD (AFT) cargo compartment door, a servicepanel covered by access door is installed forward of each cargocompartment door.The service panel consists of a selector, which is spring-loaded whenturned, and a green indicator light, which comes on when the internallocking mechanism of the door actuator 7MJ (8MJ) is engaged.The door actuator 7MJ (8MJ) is installed between the actuatorattachmant fitting of the cargo compartment door and the actuator beamof the fuselage structure. The internal locking mechanism of the dooractuator 7MJ (8MJ) retains the cargo compartment door in the openposition when the piston rod of the door actuator 7MJ (8MJ) is fullyextended.Setting the selector of control valve 15MJ (16MJ) to the OPEN orCLOSE position causes a pressurization of the cargo door hydraulicsystem by means of electric pump 25GX (normal operation). If hydraulicpower is not available from electric pump 25GX, hand pump 3085,located in the RH main landing gear well, can be used to pressurize thedoor hydraulic system manual (operation).

The electro-mechanical selector valves 9MJ and 10MJ, installed in theRH main landing gear well, are each equipped with a lever standing inup position during normal operation. Both levers must be set downwardswhen manual operation is required.A check valve 3055 (3054) is installed in the hydraulic line to keep thesystem pressurized during manual operation and to separate hydraulicpower from the hand pump line during normal operation.A sequence valve 3734 (3735) is installed between control valve 15MJ(16MJ) and door actuator 7MJ (8MJ) to avoid an uncontrolled doormovement caused by remaining air bubbles in the hydraulic system.When the selector of control valve 15MJ (16MJ) is set to CLOSEposition, the sequence valve 3734 (3735) initially pressurizes the fullactuator chamber and switches hydraulically and the piston rod of thedoor actuator starts to retract.Pressure relief valve 3086, installed at the pressure outlet of the handpump 3085, reduces excess pressure in the hand pump line.


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A300/A310 FWD and AFT Cargo Compartment DoorA300/A310 FWD and AFT Cargo Compartment Door Hydraulic System Schematic Hydraulic System Schematic


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General Description

NOTE: Designations in brackets refer to the AFT cargo compartmentdoor.

For operation of the FWD (AFT) cargo compartment door, a servicepanel covered by access door is installed forward of each cargocompartment door.The service panel consists of a selector, which is spring-loaded whenturned, and a green indicator light, which comes on when the internallocking mechanism of the door actuator 7MJ (8MJ) is engaged.The door actuator 7MJ (8MJ) is installed between the actuatorattachmant fitting of the cargo compartment door and the actuator beamof the fuselage structure. The internal locking mechanism of the dooractuator 7MJ (8MJ) retains the cargo compartment door in the openposition when the piston rod of the door actuator 7MJ (8MJ) is fullyextended.Setting the selector of control valve 15MJ (16MJ) to the OPEN orCLOSE position causes a pressurization of the cargo door hydraulicsystem by means of electric pump 25GX (normal operation). If hydraulicpower is not available from electric pump 25GX, hand pump 3085,located in the RH main landing gear well, can be used to pressurize thedoor hydraulic system manual (operation).


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment Doors Operating Handle/Service Panel and Door Actuator Operating Handle/Service Panel and Door Actuator


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If hydraulic power is not available from electric pump 25GX, hand pump3085, located in the RH main landing gear well, can be used topressurize the door hydraulic system manual (operation).

The electro-mechanical selector valves 9MJ and 10MJ, installed in theRH main landing gear well, are each equipped with a lever standing inup position during normal operation. Both levers must be set downwardswhen manual operation is required.

Pressure relief valve 3086, installed at the pressure outlet of the handpump 3085, reduces excess pressure in the hand pump line.


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ExtensionWhen hydraulic pressure is applied to the actuator at port A, the piston isforced along the internal bore of the actuator body exhausting the returnhydraulic fluid through port B. Towards the end of the piston travel, thepawls pass over a lock and then force the locking piston against itsspring in the locking cylinder. By returning the control handle which isspring-loaded to the STOP position, hydraulic pressure at port A is shutoff and the fully extended ram retracts slightly until the pawls are heldagainst the lock by spring pressure on the locking piston. The actuator isthus mechanically locked in its extended position.

RetractionWhen hydraulic pressure is applied to the actuator at port B, the lockingpiston is forced against its spring in the locking cylinder, allowing thepawls to pass over the lock, and the piston is forced along the internalbase of the actuator body, exhausting the return hydraulic fluid throughport A until the piston reaches the end of its travel and the actuator is inits fully retracted position.


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A300/A310 FWD and AFT Cargo Compartment DoorA300/A310 FWD and AFT Cargo Compartment DoorYellow Hydraulic System - Component Yellow Hydraulic System - Component FINsFINs

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- 3054 CHECK VALVE 3055 CHECK VALVE 3060 MANIFOLD 148 148XZ 3083 CHECK VALVE 29-24-13 3084 FILTER 148 148XZ 29-24-12 3085 HAND PUMP 148 148XZ 52-33-11 3086 VALVE-PRESSURE RELIEF 122 148XZ 52-33-22 3125 ACCU BRK YELLOW POWER 148 148RZ 32-44-11 3126 ACCU BRK YELLOW POWER 148 148RZ 32-44-11 3356 THERMAL RELIEF VALVE 132 811 52-33-23 3357 THERMAL RELIEF VALVE 152 812 52-33-23 3358 THERMAL RELIEF VALVE 132 811 52-33-23 3359 THERMAL RELIEF VALVE 152 812 52-33-23 3373 RESTRICTOR 811 811 52-33-17 3375 RESTRICTOR 812 812 52-33-17 3389 CHECK VALVE 132 811 52-33-13 3390 CHECK VALVE 152 812 52-33-14 7MJ DOOR ACTUATOR 132 811 52-33-18 8MJ DOOR ACTUATOR 152 812 52-33-18 9MJ ELECTRO MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 10MJ ELECTRO MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 15MJ CONTROL VALVE 122 811 52-33-15 16MJ CONTROL VALVE 152 812 52-33-15 25GX ELECTRIC PUMP 148 148XZ 29-24-11

Post SB 52-2006 For A/C 402-405,407-409,424-426,428-428,443-443,446-449, 453-499, -------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- 3054 CHECK VALVE 3055 CHECK VALVE 3060 MANIFOLD 148 148XZ 29-13-37 3083 ELECTRIC PUMP CHECK VALVE 148 148XZ 29-24-13 3084 ELECTRIC PUMP DELIVERY FILTER 148 148XZ 29-24-12 3085 HAND PUMP 148 148XZ 52-33-11 3086 PRESSURE RELIEF VALVE 122 148XZ 52-33-22 3125 BRK YELLOW POWER ACCU 148 148RZ 32-44-11 3126 BRK YELLOW POWER ACCU 148 148RZ 32-44-11 3373 RESTRICTOR/CHECK VALVE 811 811 52-33-17 3375 RESTRICTOR/CHECK VALVE 812 812 52-33-17 3389 CHECK VALVE 132 811 52-33-13 3390 CHECK VALVE 152 812 52-33-14 3732 FILTER SCREEN 122 811 3733 FILTER SCREEN 152 812 3734 SEQUENCE VALVE 132 811 52-33-24 3735 SEQUENCE VALVE 152 812 7MJ DOOR ACTUATOR 132 811 52-33-18 8MJ DOOR ACTUATOR 152 812 52-33-18 9MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 10MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 15MJ CONTROL VALVE 122 811 52-33-15 16MJ CONTROL VALVE 152 812 52-33-15 25GX ELECTRIC PUMP 148 148XZ 29-24-11


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A300 FWD and AFT Cargo Compartment DoorsA300 FWD and AFT Cargo Compartment DoorsComponent FIN InformationComponent FIN Information

1. General The electrical control system of the cargo compartment doors controls the sequence of the hydraulic operation during the opening and closing procedure of the FWD, AFT and Main Deck Cargo Compartment Doors. Each cargo compartment door has a separate control circuit.

2. Component Location -------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- 3MJ LIGHT-INDICATOR 122 122CR 52-35-12 4MJ LIGHT-INDICATOR 152 152KR 52-35-12 7MJ ACTUATOR-DOOR 132 52-33-18 8MJ ACTUATOR-DOOR 152 52-33-18 9MJ VALVE-ELECTRO-MECHANICAL SELECTOR 148 52-33-12 10MJ VALVE-ELECTRO-MECHANICAL SELECTOR 148 52-33-12 11MJ-2 SWITCH-LIMIT 922VU-2 134 25-52-00 12MJ-1 SWITCH-LIMIT 924VU-1 134 25-52-00 12MJ-2 SWITCH-LIMIT 924VU-2 134 25-52-00 12MJ-3 SWITCH-LIMIT 924VU-3 134 25-52-00 12MJ-4 SWITCH-LIMIT 924VU-4 154 25-52-00 15MJ VALVE-CONTROL 132 52-33-15 16MJ VALVE-CONTROL 152 52-33-15 21MJ SWITCH-LIMIT 811 811BR 52-35-13 22MJ SWITCH-LIMIT 812 812BR 52-35-13


ATA 52ATA 52A300/A310A300/A310

52-52-119119

A300 FWD and AFT Cargo Compartment Doors - Component LocationA300 FWD and AFT Cargo Compartment Doors - Component Location

Some A300s


ATA 52ATA 52A300/A310A300/A310

52-52-120120

A310 FWD and AFT Cargo Compartment DoorsA310 FWD and AFT Cargo Compartment DoorsDoor Electrical Control SystemDoor Electrical Control System

1. General The Cargo Compartment Door electrical control system provides electrical power via a number of series connected limit switches to an electro- mechanical operated limit selector valve and hence the door actuators to control the opening and closing of the FWD and AFT Cargo Compartment Doors. With the Cargo Compartment Door unlocked, selection of the door selector switch (control valve) on the control panel to the OPEN/CLOSED position will energize the circuit with 28VDC which is also routed to the Yellow Hydraulic system pump contactor. The hydraulic electro-mechanical selector valve is energized through contacts of the series connected door sill latches and the door locking shaft limit switch to operate the door actuators and the door will open. When the door is fully open and locked, the door actuator switch contacts will close to illuminate the green indicator lamp. The door sill latches must be lowered when cargo is being loaded or unloaded which involves the actuation of limit switches within the door control system (Ref. AMM 25-52-00) to open the contacts of the series connected limit switches. This, therefore, serves as a safety device to prevent the doors being closed when the door sill latches are lowered by disconnecting the 28VDC power supply to the electro-mechanical selector valve. The door is also prevented from closing by the door locking shaft limit switch if the compartment door operating handle is not in the fully unlocked position.

**ON A/C 415-415,

The Upper Deck Cargo (UDC) Door system control provides electrical power to operate selector control valve 32MJ (system selector valve - FWD Cargo Door or Upper Cargo Door) and electro-mechanical selector control valves 34MJ (serving the door locking actuator) and 33MJ (serving the door actuator). The door is controlled via pushbutton switches (P/BSW) and monitored by indicator lights located on door control panel 913VU. Limit switches, diodes and relays provide for circuit switching and safety interlocking during operation of the door.

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF --------------------------------------------------------------------------------

3MJ LIGHT-INDICATOR 122 122CR 52-35-12 4MJ LIGHT-INDICATOR 152 677DR 52-35-12 7MJ ACTUATOR-DOOR 132 52-33-18 8MJ ACTUATOR-DOOR 152 52-33-18 9MJ VALVE-ELECTRO-MECHANICAL SELECTOR 148 52-33-12 10MJ VALVE-ELECTRO-MECHANICAL SELECTOR 148 52-33-12 11MJ-1 SWITCH-LIMIT 922 VU-1 134 25-52-00 11MJ-2 SWITCH-LIMIT 922 VU-2 134 25-52-00 12MJ-1 SWITCH-LIMIT 924 VU-1 134 25-52-00 12MJ-2 SWITCH-LIMIT 924 VU-2 134 25-52-00 12MJ-3 SWITCH-LIMIT 924 VU-2 134 25-52-00 12MJ-4 SWITCH-LIMIT 924 VU-3 154 25-52-00 15MJ VALVE-CONTROL 132 52-33-15 16MJ VALVE-CONTROL 152 52-33-15 17MJ DIODE 122 18MJ DIODE 122 21MJ SWITCH-LIMIT 811 52-35-13 22MJ SWITCH-LIMIT 812 52-35-13


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A310 FWD and AFT Cargo Compartment DoorsA310 FWD and AFT Cargo Compartment DoorsDoor Electrical Control System - Component LocationDoor Electrical Control System - Component Location


ATA 52ATA 52A300/A310A300/A310

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A310 FWD and AFT Cargo Compartment DoorsA310 FWD and AFT Cargo Compartment DoorsDoor Electrical Control SystemDoor Electrical Control System

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF --------------------------------------------------------------------------------

3MJ LIGHT-INDICATOR 122 122CR 52-35-12 4MJ LIGHT-INDICATOR 152 677DR 52-35-12 7MJ ACTUATOR-DOOR 132 52-33-18 8MJ ACTUATOR-DOOR 152 52-33-18 9MJ VALVE-ELECTRO-MECHANICAL SELECTOR 148 52-33-12 10MJ VALVE-ELECTRO-MECHANICAL SELECTOR 148 52-33-12 11MJ-1 SWITCH-LIMIT 922 VU-1 134 25-52-00 11MJ-2 SWITCH-LIMIT 922 VU-2 134 25-52-00 12MJ-1 SWITCH-LIMIT 924 VU-1 134 25-52-00 12MJ-2 SWITCH-LIMIT 924 VU-2 134 25-52-00 12MJ-3 SWITCH-LIMIT 924 VU-2 134 25-52-00 12MJ-4 SWITCH-LIMIT 924 VU-3 154 25-52-00 15MJ VALVE-CONTROL 132 52-33-15 16MJ VALVE-CONTROL 152 52-33-15 17MJ DIODE 122 18MJ DIODE 122 21MJ SWITCH-LIMIT 811 52-35-13 22MJ SWITCH-LIMIT 812 52-35-13


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A310 FWD and AFT Cargo Compartment DoorsA310 FWD and AFT Cargo Compartment DoorsDoor Electrical Control Switches - Component LocationDoor Electrical Control Switches - Component Location


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Some A300/A310 FWD Cargo Compartment DoorSome A300/A310 FWD Cargo Compartment DoorDoor Control System ComponentsDoor Control System Components

Description

The series connected limit switches which control the operation of theelectro-mechanical selector valves are operated as follows:

• 11MJ-1 and 11MJ-2 by the YZ-latches of the manual door silllatches of the FWD Cargo Compartment 12MJ-1 and 12MJ-2 by theYZ-latches of the automatic door sill latches of the FWD CargoCompartment.

• 12MJ-3 and 12MJ-4 by the YZ-latches of the automatic door silllatches of the AFT Cargo Compartment.

Door locking shaft limit switch 21MJ is installed in the FWD and AFTCargo Compartment Doors respectively and are operated by the doorlocking mechanism.Limit switch 7MJ (FWD) is installed in the door actuator mechanism andclose to illuminate the green indicator lamps 3MJ (FWD) when the CargoCompartment Door is fully open and locked.The electro-mechanical selector valve 9MJ (FWD) is located in the RHmain wheel compartment and when energized, extend and retract thedoor actuator to open and close the Cargo Compartment Door.


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Some A300/A310 FWD Cargo Compartment DoorSome A300/A310 FWD Cargo Compartment DoorElectrical Door Control SystemElectrical Door Control System

**Some A300/A310Some A300/A310

**

**


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Description






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Some A300/A310 FWD Cargo Compartment DoorSome A300/A310 FWD Cargo Compartment Door Electrical Door Control System Electrical Door Control System


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Description







ATA 52ATA 52A300/A310A300/A310

52-52-129129

A300/A310 AFT Cargo Compartment DoorA300/A310 AFT Cargo Compartment Door Electrical Door Control System Electrical Door Control System


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52-52-130130

Some A310 FWD and AFT Cargo Compartment DoorsSome A310 FWD and AFT Cargo Compartment DoorsElectrical Control System Operational ModeElectrical Control System Operational Mode

NOTE: Components identifications in parenthesis are for FWD cargodoor electrical control system. FWD Cargo Compartment Doorhas one additional door sill latch (11MJ).

Opening - FWD/AFT Cargo Compartment DoorFully pulling out operating handle makes door locking shaft limit switchcontacts 22MJ (21MJ) removing inhibit from electro-mechanical selectorvalve 10MJ (9MJ).Manually operating control valve 16MJ (15MJ) starts YELLOW systempump motor 25GX through circuit breaker 7GX, 601PP FLT/GNDbusbar, diode 18MJ (17MJ) and contactor 24GX. Electro-mechanicalselector valve 10MJ (9MJ) energizes, pressurizing door actuator.When door is fully open, limit switch 8MJ (7MJ) makes circuit toilluminate green lamp 4MJ (3MJ) "DOOR OPEN AND LOCKED". Safetyprocedure during cargo loading requires door sill latches to be lowered,opening circuit to electro-selector valve 10MJ (9MJ) and preventing doorclosure.

**ON A/C 415-415

NOTE: The system is supplied from 28V bus 601PP via circuit breaker7GX.


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Some A310 FWD and AFT Cargo Compartment DoorsSome A310 FWD and AFT Cargo Compartment DoorsElectrical Control System - Schematic DiagramElectrical Control System - Schematic Diagram


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Some A310 FWD and AFT Cargo Compartment DoorsSome A310 FWD and AFT Cargo Compartment DoorsElectrical Control System Operational ModeElectrical Control System Operational Mode

Operation

Closing - FWD/AFT Cargo Compartment DoorWith door sill latches raised and control valve 16MJ (15MJ) set to closedposition, YELLOW system pump motor 25GX starts through circuitbreaker 7GX, 601PP FLT/GND busbar, diode 18MJ (17MJ) andcontactor 24GX.Electro-mechanical selector valve 10MJ (9MJ) energizes, pressurizingdoor actuator to close door and open limit switch 7MJ (8MJ)extinguishing indicator light 4MJ (3MJ). Stowing locking handle openslimit switch 21MJ (22MJ) inhibiting further solenoid operation.


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Some A310 FWD and AFT Cargo Compartment DoorsSome A310 FWD and AFT Cargo Compartment Doors Electrical Control System - Schematic Diagram Electrical Control System - Schematic Diagram

TO THE UPPER DECK CARGOCOMPARTMENT DOOR OR MDCC(MAIN DECK CARGO COMPARTMENT)DOOR SYSTEM


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsDoor Actuator Safety LocksDoor Actuator Safety Locks

Special PrecautionsSpecial Precautions

1. General This procedure must be carried out when the FWD and/or AFT cargo compartment door (referred as to cargo door) remains fully open during the maintenance procedure. The appropriate safety lock for the particular door actuator must be installed when the door actuator remains connected to the cargo door. The support struts must be installed before the door actuator is disconnected from the cargo door or from the fuselage structure.

2. Equipment and Materials -------------------------------------------------------------------------------- ITEM DESIGNATION -------------------------------------------------------------------------------- A. Access Platform, 2.7 to 3.0 m (9.0 to 10.0 ft.) B. N/A FEDEXN/A FEDEX C. 98A52307628000 (FEDEX TOOL)(FEDEX TOOL) Safety Lock - FWD and AFT Cargo Compartment Door Actuators (Actuator of Vendors FEINMECHANISCHE WERKE MAINZ and AIR EQUIPMENT) D. 98A52307523000 (FEDEX TOOL)(FEDEX TOOL) Support Struts - FWD and AFT Cargo Compartment Doors

Referenced Procedures - 24-41-00, P. Block 301 AC External Power Control - 52-30-00, P. Block 1 Cargo Compartment Doors

3. Procedure

A. Job Set-Up (1)Position access platform. (2)Connect the aircraft ground power unit and energize the aircraft electrical network (Ref. 24-41-00, P. Block 301). (3)Make certain that electronics racks ventilation is correct. (4)Before FWD or AFT cargo door is to be opened proceed as follows:

WARNING : STOP THE OPENING PROCEDURE IF THE RED WARNING LIGHT FLASHES. WARNING : STOP THE OPENING PROCEDURE IF THE RED WARNING LIGHT FLASHES. RESIDUAL PRESSURE COULD CAUSE THE DOOR TO OPEN WITH A SUDDEN RESIDUAL PRESSURE COULD CAUSE THE DOOR TO OPEN WITH A SUDDEN FORCE AND INJURE PERSONS AND/OR DAMAGE THE AIRCRAFT. FORCE AND INJURE PERSONS AND/OR DAMAGE THE AIRCRAFT.

(a)Open the access panel 811CR or 677CR and make sure that red warning light CABIN PRESSURE is not flashed. (b)If red warning light CABIN PRESSURE is flashing, stop any air supply to passenger compartment and wait until warning light stops flashing before you open door. (5)Fully open FWD or AFT cargo door (Ref. 52-30-00, P. Block 1).

B. Installation of Safety Lock (PN 98A52307628000)

(Ref. Fig. 301) NOTE : The safety lock PN 98A52307628000 is applicable for door actuators of vendors FEINMECHANISCHE WERKE MAINZ and AIR EQUIPMENT. (1)Remove knurled bolts (2) and open applicable safety lock (1). (2)Position safety lock (1) to the piston of door actuator (3) and close safety lock (1). (3)Install knurled bolts (2) and tighten to secure the safety lock (1).

C. Removal of Safety Lock (PN 98A52307567001 or PN 52307628000) (1)Make sure that cargo compartment door is fully opened hydraulically (Ref. 52-30-00, P. Block 1). (2)Remove knurled bolts (2), open safety lock (1) and remove it from piston of door actuator (3). (3)Close safety lock (1) and install knurled bolts (2). (4)Close and lock the cargo compartment door correctly (Ref. 52-30-00, P. Block 1), if necessary.


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment Doors Door Actuator Safety Locks Door Actuator Safety Locks


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsDoor Safety Support StrutsDoor Safety Support Struts

D. Installation of Support Struts (PN 98A52307523000) (Ref. Fig. 302) (1)Position lower end of support strut (15) to the fuselage frame and install the pip pin (16) in attachment hole. (2)Loosen jam nuts (13) to adjust length of support struts. (3)Position fork end of support strut (12) to attachment fitting (10). (4)Turn spindle (14) until holes of fork end (12) and attachment fitting (10) align. (5)Install pip pin (11) tighten jam nuts (13) to secure connection of support strut and fully opened cargo compartment door.

E. Removal of Support Struts (PN 98A5230753000) (1)Make sure that cargo compartment door is fully opened hydraulically (Ref. 52-30-00, P. Block 1). (2)Pull on ring of pip pin (11) and remove it to release connection of support strut and cargo compartment door. (3)Remove fork end of support strut (12) from attachment fitting (10). (4)Pull on ring of pip pin (16) and remove it together with support strut (15) from fuselage frame. (5)If necessary, close and lock cargo compartment door (Ref. 52-30-00, P. Block 1).

F. Close-Up (1)Make certain that work area is clean and clear of tools and miscellaneous items of equipment. (2)De-energize the aircraft electrical network and disconnect electrical ground power unit (Ref. 24-41-00, P. Block 301). (3)Remove access platform.


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A300/A310 FWD and AFT Cargo Compartment DoorsA300/A310 FWD and AFT Cargo Compartment DoorsDoor Safety Support StrutsDoor Safety Support Struts

NOTE NOTE

Two struts required onTwo struts required onForward and Aft Ends ofForward and Aft Ends ofDoor Assembly for SafetyDoor Assembly for SafetySupport of Door duringSupport of Door duringMaintenance OperationsMaintenance Operations

Support StrutSupport StrutPart Number 98A52307523000 -Part Number 98A52307523000 -Located in the FedEx AircraftLocated in the FedEx AircraftMaintenance Production ControlMaintenance Production ControlSystem Tooling CatalogSystem Tooling Catalog


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A300/A310 BULK Cargo Compartment Door System - GeneralA300/A310 BULK Cargo Compartment Door System - General

GeneralGeneral

The BULK cargo compartment door is located on the lower RH side of the fuselage, between STA4362(FR67) and STA4468(FR69) and provides access to the BULK cargo compartment.

The door is of the plug type and opens inwards, hinging about its upper edge. When closed and locked, the outer surface of the door is flush with the fuselage skin. The door can be opened, closed and locked from either inside or outside the aircraft.

Bulk Cargo Compartment Door Components -------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF. -------------------------------------------------------------------------------- BULK CARGO COMPARTMENT DOOR 162 813 52-34-00 HINGE ARM 162 813 52-34-11 HINGE ARM BRACKET 162 813 52-34-11 DAMPER 162 813 52-34-11 INSULATING MAT 162 813 52-34-00 INTERNAL HANDLE 162 813 52-34-21 SNAP HOOK ASSY 162 813 52-34-41 SPRING UNIT 162 813 52-34-41 LATCH ASSEMBLY 162 813 52-34-00 LOWER EDGE MEMBER 162 813 52-34-00 TORQUE SHAFT 162 813 52-34-21 INNER SKIN 162 813 52-34-00 CORNER SECTION 162 813 52-34-00 BARREL LOCK 162 813 52-34-00 BEAM 162 813 52-34-00 FORMER 162 813 52-34-00 SIDE EDGE MEMBER 162 813 52-34-11 OUTER SKIN 162 813 52-34-00 DOOR STOP FITTING 162 813 52-34-31 SEAL RETAINER 162 813 52-34-00 SEALING SECTION 162 813 52-34-11


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A300/A310 BULK Cargo Compartment Door System - General ArrangementA300/A310 BULK Cargo Compartment Door System - General Arrangement


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A300/A310 BULK Cargo Compartment Door System - GeneralA300/A310 BULK Cargo Compartment Door System - General

Structure• The door structure comprises aluminum-alloy components riveted

together. Major components are beams, edge members and anouter skin.

• Sealant is used during manufacture to ensure a pressure-tight sealat all joints and rivet holes.

Fittings• Adjustable stop fittings, with mating stop fittings on the fuselage

door frame, transfer pressurization loads to the aircraft structure.• Barrel locks, protruding from the forward and aft edge members,

form part of the door locking mechanism. When the door is in theclosed position, the barrel locks locate on latch spigots attached tothe fuselage door frame structure. The aft barrel lock trips the limitswitch, attached to the aft fuselage door frame, giving a door lockedindication in the flight compartment.

Sealing• The door seal is a rubber extrusion, with equally spaced

pressurization holes, secured to the door by retainers and screws.When the door is closed, the seal is compressed by a sealingsection on the fuselage frame and inflated by cabin air pressure toform a pressure-tight seal.

Drainage• On the lower edge member, between seal and outer skin, a drain

valve is installed. The drain valve is a flap assembly which covers a10 mm (0.39 in.) dia. hole in the lower edge member and isprotected by a retaining plate.

• At ground level, the drain valve is open to allow liquid to escape.During flight, the drain valve is closed by differential pressure.

Insulation• Attached to the interior of the door is an insulation mat retained in

position by Velcro tape. The mat is filled with a Skydrol-resistantmaterial which is sealed inside a Hypalon cover.


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A300/A310 BULK Cargo Compartment Door System - General FeaturesA300/A310 BULK Cargo Compartment Door System - General Features


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A300/A310 BULK Cargo Compartment Door SystemA300/A310 BULK Cargo Compartment Door SystemLocking and Latching Mechanism - GeneralLocking and Latching Mechanism - General

General

Locking MechanismThe locking mechanism is mounted in the lower half of the door and iscontrolled by the door handles. When the exterior door handle isreleased and moved to the OPEN position, the interior door handlemoves simultaneously to the OPEN position. With the exterior doorhandle secured in its recess, the interior door handle is free to bemoved, independently, from the LOCKED to the OPEN position.In the locked position the interior handle is horizontal. To open the doorthe handle must be rotated clockwise a quarter turn to the verticalposition.When either door handle is moved, rotation of the torque shaft isachieved through an operating rod. The rotation of the torque shaft, withthe door in the closed position, secures the barrel locks on to the latchspigots. With the door in the fully open position, and the door handles inthe CLOSED/LOCKED condition, the latch assembly will engage thelatch arrester, securing the door in the fully open position.With the door handles in the CLOSED/LOCKED position, a spring rodcylinder retains the complete locking mechanism in a positive lockedcondition

Operation

The exterior door handle is released by pressing the pushbuttonmounted in the door handle.

The door is opened by moving either door handle to the OPEN position.

With movement of the door handles, an operating rod rotates the barrellocks, via the torque shaft. The barrel locks release the latch spigotsmounted on the fuselage door frame, and the door is free to openinboard.

The door is opened partially, to clear the latch spigots, and the exteriordoor handle returned to the CLOSED and recessed position.

When the door is fully open, the latch assembly locates the latcharrester, mounted on the ceiling of the BULK cargo compartment. Duringopening, the weight of the door is compensated for by the balancemechanism.

The door will remain locked fully open with the door handles in theCLOSED/LOCKED position and the latch assembly engaged in the latcharrester.

Movement of the door handles to the OPEN position disengages thelatch assembly and initiates a downward swing of the door, controlled bythe balance mechanism.

After closure of the door the exterior door handle must be returned to therecessed position.


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A300/A310 BULK Cargo Compartment Door SystemA300/A310 BULK Cargo Compartment Door SystemLocking and Latching Mechanism - Component LocationLocking and Latching Mechanism - Component Location

Locking MechanismLocking Mechanism

Latch AssemblyLatch Assembly


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A300/A310 BULK Cargo Compartment DoorA300/A310 BULK Cargo Compartment DoorDoor Seal and Sealing - GeneralDoor Seal and Sealing - General

General

SealingThe door seal is a rubber extrusion, with equally spacedpressurization holes, secured to the door by retainers and screws.

When the door is closed, the seal is compressed by a sealingsection on the fuselage frame and inflated by Cabin Compartmentpressurized air pressure to form a pressure-tight seal.


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A300/A310 BULK Cargo Compartment DoorA300/A310 BULK Cargo Compartment DoorDoor Seal - Seal InstallationDoor Seal - Seal Installation


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A300/A310 BULK Cargo Compartment DoorA300/A310 BULK Cargo Compartment DoorBalance Mechanism and Hinge Pins - GeneralBalance Mechanism and Hinge Pins - General

Balance MechanismThe balance mechanism is mounted in the ceiling of the BULK cargocompartment in line with STA4415(FR68), and is attached to theinterior of the door via leaf springs.

Some A300s have either two or three leaf spring for the balancemechanism which depends on the aircraft effectivity code.

The A310 aircraft have two leaf springs installed on the airframe for thebalance mechanism.

Two hinge arms attach the door to the fuselage structure and doorassembly. Each arm is attached to the airframe structure with a hingepin and hardware lock bolts/washers.


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A300/A310 BULK Cargo Compartment DoorA300/A310 BULK Cargo Compartment DoorHinge Pins and Balance Mechanism - Component ViewHinge Pins and Balance Mechanism - Component View

DoorDoorHingeHingePinPin

A300 / Some A310Two Leaf Springs -Balance Mechanism

Connection


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A300/A310 Main Deck Cargo Compartment - General Description and FINA300/A310 Main Deck Cargo Compartment - General Description and FIN

2. Component Location(Ref. Fig. 001)

--------------------------------------------------------------------------------FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA

DOOR REF.--------------------------------------------------------------------------------

MAIN DECK CARGO DOOR 835 52-36-11DOOR SUSPENSION 835 52-36-12

3350 DOOR ACTUATOR 835 52-33-513351 LATCHING ACTUATOR 835 52-33-52

DOOR INSULATION 835 52-36-13DOOR LINING 835 25-58-22DOOR SEAL 835 52-36-18LOCKING MECHANISM 835 52-36-21ACCESS COVERS 835 52-36-00LATCHING MECHANISM 835 52-36-19LOCKING INDICATOR FLAGS 835 52-36-23CENTERING GUIDE 835 52-36-24INTERLOCK 835 52-36-25DOOR ACTUATING MECHANISM 835 52-36-27SWITCH BOX 835 52-36-28CARGO COMPARTMENT DOORS ELECTRICAL 835 52-35-00CONTROL SYSTEMDOOR WARNING SYSTEM 835 52-70-00CARGO COMPARTMENT DOOR HYDRAULIC 835 52-33-00SYSTEMVENT DOOR 835 52-36-22LATCH AND STOP FITTINGS 835 52-36-31

7LX WING SCAN LIGHT 835 33-49-00

GeneralGeneral The Main Deck Cargo (MDC) door installed in the Main Deck Cargo Compartment in the LH side of the fuselage between STA1446/FR20 and STA1817/FR27 permits loading and unloading of freight units. The MDC door opens outwards and upwards and provides a clearance width of 3.58 m (141 in.) and a clearance height of 2.56 m (101 in.). The cargo door weight is approx. 550 kg (1212.5 lb). The main deck cargo (MDC) door hydraulic system is connected to the yellow hydraulic circuit, upstream from the pressure line of the FWD cargo compartment door. It is possible to operate the FWD cargo compartment door in the lower deck area and the MDC door at the same time. The MDC door is mechanically/hydraulically locked or unlocked and hydraulically opened or closed. The MDC door can be opened to 70° or 145° positions. If the electric pump is not available, the MDC door hydraulic system can be pressurized by the hand pump. In the event of hydraulic system failure the MDC door can be opened and closed using a crane. WARNING: WHEN THE MDC DOOR IS OPENED BUT CARGO IS NOT TO BE LOADED, SECURE FUSELAGE

OPENING WITH THE MDC DOOR NET. System DescriptionSystem Description The main deck cargo (MDC) door structure is of a conventional monocoque light alloy construction and consists mainly of frames, longerons, stringers and outer and inner skin. A pressure seal fitted to the periphery of the MDC door ensures pressure-tight closing of the MDC door and prevents water from entering the fuselage. MDC door insulation and internal door linings are used for heat and sound insulation. The door upper edge is hinged to the fuselage by piano hinges. Eight hooks fitted to the door lower edge lock the door in the closed position, and are actuated via a link system and hydraulic actuator. A hydraulic door actuator located in the center of the door upper edge acts on a scissors-type actuating mechanism to open and close the MDC door. The MDC door opens when the actuator piston rod retracts and closes when the actuator piston rod extends. The electrical control system is operated via an inside and/or an outside operation panel. The inside operation panel is located at the left inner side of the fuselage between STA1315/FR17 and STA1340/FR18. The outside operation panel is located in the left outer side of the fuselage between STA1817/FR27 and STA1870/FR28. It is covered by an access door (231AL).


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A300/A310 Main Deck Cargo Compartment (MDCC) Door - General DescriptionA300/A310 Main Deck Cargo Compartment (MDCC) Door - General Description


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52-52-150150

A310 Main Deck Cargo Compartment - General Description and FINA310 Main Deck Cargo Compartment - General Description and FIN

2. Component Location A. Upper Deck Cargo Door (Ref. Fig. 001) -------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- UPPER DECK CARGO DOOR 835 52-36-11 DOOR SUSPENSION 835 52-36-12 3350 DOOR ACTUATOR 835 52-33-51 3351 LOCKING ACTUATOR 835 52-33-52 DOOR LINING AND INSULATION 835 52-36-13 DOOR SEAL 835 52-36-18 SAFETY MECHANISM 835 52-36-21 ACCESS COVERS 835 52-36-00 LOCKING MECHANISM 835 52-36-19 LOCKING INDICATOR 835 52-36-23 CENTERING GUIDE 835 52-36-24 INTERLOCK 835 52-36-25 INDICATOR AND SEAL BRACKET 835 52-36-26 DOOR ACTUATING MECHANISM WITH 835 52-36-27 3354 SWIVEL PIPE ASSY 835 3355 SWIVEL PIPE ASSY 835 SWITCH BOX 835 52-36-28 CARGO COMPARTMENT DOORS ELECTRICAL 835 52-35-00 CONTROL SYSTEM DOOR WARNING 835 52-70-00 CARGO COMPARTMENT DOOR HYDRAULIC 835 52-33-00 SYSTEM 3362 UDC SELECTOR CONTROL VALVE 232 232AW 52-33-53 3363 UDC SELECTOR CONTROL VALVE 232 232AW 52-33-53 3085 HAND PUMP 148 148XZ 52-33-11 9MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 10MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 PRESSURE RELIEF FLAP 835 52-36-22 LATCH AND STOP FITTINGS 835 52-36-31 7LX WING SCAN LIGHT 835 33-49-00

GeneralGeneral The Upper Deck Cargo (UDC) Door installed in the passenger compartment LH side of the fuselage between STA1446/FR20 and STA1817/FR27 permits loading and unloading of freight units. The cargo door opens outwards and upwards and provides a clearance width of 3.58 m (141 in.) and a clearance height of 2.56 m (101 in.). The cargo door weight is approx. 550 kg (1212.5 lb). DescriptionDescription The upper deck cargo door structure is of conventional monocoque light alloy construction and consists mainly of frames, longerons, stringers and outer and inner skin. A pressure seal fitted to the periphery of the door ensures pressure-tight closing of the door and prevents water from entering the fuselage. Cargo door insulation and internal linings are used for heat and sound insulation. The door upper edge is hinged to the fuselage by piano hinges. Eight hooks fitted to the door lower edge lock the door in the closed position, and are actuated via a link system and hydraulic actuator. A hydraulic door actuator located in the door upper edge center acts on a scissors-type actuating mechanism to open and close the door. The door opens when the actuator piston rod retracts and closes when the actuator piston rod extends. Normally the door is operated electro-hydraulically via a control panel. The control panel is hooked into a bracket near the FWD passenger/crew door LH and can be removed for operating the cargo door. If the electrical system fails, the door can be operated by means of a hand pump. In addition the door can be manually unlocked and opened or closed by means of a crane. Two opening positions at angles of 70ø and 145ø are provided. The cargo door can be stopped at any intermediate position. At the two opening positions the door is hydraulically locked and in addition mechanically secured by two catch hooks. At the 70ø position it can be additionally secured for maintenance purposes by two support struts, installed at STA1446/FR20 and STA1817/FR27. The 70ø opening angle gives sufficient clearance for loading or unloading pallets or containers. At the 145ø opening angle, cargo can be loaded or unloaded by a crane or ramp where clearance does not exist for the door at the 70ø opening angle. During opening or closing the door can withstand wind forces up to 40 knots and at the two opening positions up to 60 knots. The electrical control system is used for controlling the door hydraulic actuation system. Limit switches installed in the door supply a warning signal to the door warning system when the door is not fully closed and locked. A wing scan light is installed in the center of the lower part of the door. Mechanical locking indicators located at the bottom of the door inner surface indicate that the door is fully closed and locked, closed but not locked or locked but not closed. WARNING: WHEN THE UDC DOOR IS OPENED BUT CARGO IS NOT TO BE LOADED, PROTECT FUSELAGE

OPENING WITH SAFETY BARRIER PN 98A5230800500000.


ATA 52ATA 52A300/A310A300/A310

52-52-151151

A310 Main Deck Cargo Compartment - General Description and FINA310 Main Deck Cargo Compartment - General Description and FIN

NOTESome A310 Passenger Windows are eitherplugged with Aluminum Metal Plug Sheets,Exterior Skin Area covered with Aluminum MetalExterior Plates and/or Window Panes paintedover on the MDCC Door Assembly exteriorsurface areas.


ATA 52ATA 52A300/A310A300/A310

52-52-152152

A300/A310 Main Deck Cargo Compartment/Upper Deck Cargo DoorA300/A310 Main Deck Cargo Compartment/Upper Deck Cargo Door Door Opening/Closing Travel Ranges - General Door Opening/Closing Travel Ranges - General

If the electrical system malfunctions, the MDC door can be operated by means ofa hand pump. In addition the MDC door can be manually unlocked and then beopened or closed by means of a crane. Two opening positions at angles of 70°and 145° are given for normal loading. The MDC door can be stopped at anyintermediate position. In this case an acoustic signal comes on to warn persons.The acoustic signal goes off when the MDC door is moved hydraulically in thenormal opening or closing position.The movement of the MDC door stops automatically when the MDC door comesinto the 70° opening position. In this position (or in the 145° position) the dooractuator is hydraulically locked and in addition mechanically secured by therelated catch hook.

At the 70° position the MDC door can be additionally secured for maintenancepurposes by two support struts, installed at STA1446/FR20 and STA1817/FR27.The 70° opening angle gives sufficient clearance for loading or unloading palletsor containers. At the 145° opening angle, cargo can be loaded or unloaded by acrane or ramp.During opening or closing the MDC door can withstand wind forces up to 40knots and at the two given opening positions up to 60 knots.Limit switches installed in the MDC door supply a signal to the door warningsystem when the door is not fully closed and locked. A wing scan light is installedin the center of the lower part of the MDC door.Mechanical locking indicators located at the bottom of the door outer surfaceindicate that the door is correctly locked.


ATA 52ATA 52A300/A310A300/A310

52-52-153153

A300 Main Deck Cargo Compartment DoorA300 Main Deck Cargo Compartment DoorDoor Opening/Closing Travel Ranges - GeneralDoor Opening/Closing Travel Ranges - General


ATA 52ATA 52A300/A310A300/A310

52-52-154154

A300 Main Deck Cargo Compartment - Component DescriptionA300 Main Deck Cargo Compartment - Component Description

General Description

Door StructureThe door structure is formed by frames and longerons together with outer andinner skins and attaching parts.The milled frames have provisions at their lower ends for receiving the lockinghooks and associated linkage.Cutouts in the chemically milled outer skin accommodate:

• the wing scan light• the vent door• access covers for assembly and maintenance and• hoisting lugs used for removal/installation and for opening and closing the

cargo door by means of a crane.The outer and inner skins, frames, longerons, stringers, stiffeners and edgemembers are riveted together. The door is hinged to the fuselage by a multi-section stainless steel piano hinge and hinge pin attached by close tolerancebolts.In areas subjected to increased loads, i.e. at the door ends and in the dooractuator attachment area, the piano hinge sections are formed as reinforcedangular hinges.Fittings for attaching the door actuator are located in the door upper centerbetween STA1605/FR23 and STA1658/FR24.Drain holes to drain the water caused by condensation are integrated in framesand longerons. This drain water is directed via drain valves and drain hoses intothe door sill area and then emits from the aircraft.For the installation of door lining, brackets are riveted to the skin of the doorstructure. Additionally a base ring for fastening the lowerdoor lining is located atthe base of the MDC door.

Door SealThe door seal consists of primary and secondary seals.The primary seal is a lip-type seal made of silicone rubber reinforced with fabric.The seal is retained by a sectional metal sheet attached to the inner surface ofthe door edge. When the door is closed, the lip of the seal contacts the fuselagedoor frame.The secondary seal, fitted to the forward and aft edges of the door inner surface,consists of a lip-type seal at the door and a hose-type seal at the fuselage doorframe. Attachment of secondary and primary seals is similar.A bridging seal forms a connection between primary and secondary seals and isscrewed to the door structure.The primary seal together with the structure and locking mechanism ensure thedoor is pressure-tight when closed, while the secondary seal serves as aweather seal.An additional hose-type seal is fitted to the door lower edge.The pressure relief flap has a lip-type seal which is retained in the same manneras the primary and secondary seal.

Lining and InsulationInsulation packs which are made of glasswool, cover material and insulationplates made of polyethylene foam plates. The insulation packs are installed inthe small cavities between outer and inner skin and are retained with VELCROtapes.In larger interfaces of the door structure the insulation packs are attached withVELCRO tapes and additionally secured with stud assemblies.

To protect the internal door structure a door lining made of prepreg material isinstalled on the inner skin. The door lining consists of lining panels, edge liningsand dado linings.The lining panels are inserted in brackets and are secured with screws. Theedge and dado linings are mounted on brackets of door structure with screws.


ATA 52ATA 52A300/A310A300/A310

52-52-155155

A300 Main Deck Cargo Compartment Door - Component LocationA300 Main Deck Cargo Compartment Door - Component Location


ATA 52ATA 52A300/A310A300/A310

52-52-156156

A310 Main Deck Cargo Compartment - Component DescriptionA310 Main Deck Cargo Compartment - Component Description

GENERAL DESCRIPTION

DOOR STRUCTUREDESCRIPTIONThe door structure is formed by frames and longerons together withouter and inner skins and attaching parts.The milled frames have provisions at their lower ends for receiving thelocking hooks and associated linkage.

Cutouts in the chemically milled outer skin accommodate:• 5 windows• 1 wing scan light• 1 pressure relief flap• access covers for assembly and maintenance and• 3 hoisting lugs used for removal/installation and for opening and

closing the cargo door by means of a crane. An additional hoistinglug is located on the lower edge of the door between STA1658/FR24and STA1711/FR25.

The outer and inner skins, frames, longerons, stringers, stiffeners andedge members are riveted together. The door is hinged to the fuselageby a multi-section stainless steel piano hinge and hinge pin attached byclose tolerance bolts.

In areas subjected to increased loads, i.e. at the door ends and in thedoor actuator attachment area, the piano hinge sections are formed asreinforced angular hinges.

Fittings for attaching the door actuator are located in the door uppercenter between STA1605/FR23 and STA1658/FR24. The door frameincorporates drain holes, hoses and valves for draining condensation.Brackets attached to the inner surface of the door accommodate airconditioning components, overhead stowage compartments and liningwhich is removed and replaced by a simplified lining, when the aircraft isused in the cargo configuration.

DOOR SEAL

Description

The door seal consists of primary and secondary seals.The primary seal is a lip-type seal made of silicone rubber reinforcedwith fabric. The seal is retained by a sectional metal sheet attached tothe inner surface of the door edge. When the door is closed, the lip ofthe seal contacts the fuselage door frame.

The secondary seal, fitted to the forward and aft edges of the door innersurface, consists of a lip-type seal at the door and a hose-type seal atthe fuselage door frame. Attachment of secondary and primary seals issimilar.A bridging seal forms a connection between primary and secondaryseals and is screwed to the door structure.

The primary seal together with the structure and locking mechanismensure the door is pressure-tight when closed, while the secondary sealserves as a weather seal.

An additional hose-type seal is fitted to the door lower edge.The pressure relief flap has a lip-type seal which is retained in the samemanner as the primary and secondary seal.

LINING AND INSULATIONDESCRIPTION

Insulation packs are used for heat and sound protection. The insulationpacks are installed in the cavities between outer and inner skin and areretained with cord thread or quick-release fasteners. A lining is installedon the inner surface of the door.

When the aircraft is used in the cargo configuration, sections of thecargo door lining may be removed and replaced by a simplified lining.The simplified lining is a sectional monoshell GRP lining and is retainedwith quick-release fasteners and screws.


ATA 52ATA 52A300/A310A300/A310

52-52-157157

A310 Main Deck Cargo Compartment Door - Component LocationA310 Main Deck Cargo Compartment Door - Component Location

PLUGGED AND/OR PAINTED

Door Structure and Seal

PLUGGED AND/OR PAINTED


ATA 52ATA 52A300/A310A300/A310

52-52-158158

A300 Main Deck Cargo Compartment Door - Door Mechanism DescriptionA300 Main Deck Cargo Compartment Door - Door Mechanism Description

General Description Door Mechanism The door mechanism installed in the lower part of the MDC door comprises the primary components: • The locking mechanism • The latching mechanism • The locking indication system • The interlock mechanism. The parts of the locking mechanism are made of stainless steel or titanium. Parts subject to wear are additionally chromium plated. The locking shaft is actuated via manually-operated outside locking lever located in a recess near the forward outside edge of the MDC door. An additional inside locking lever is located at the inner forward edge.

In the LOCKED position, the outside locking lever is secured in the recess by a spring. Both locking levers are connected to the locking shaft via bellcranks and pushrods. The locking shaft is connected to the vent door via a pushrod and shaft. The vent door ensures that the MDC deck cargo compartment is at ambient pressure when opening or closing the MDC door. The vent door remains open until either of the locking levers are pushed fully home. An interlock mechanism consisting of a lever and roller, link, spring and pawl is incorporated to prevent operation of the latching mechanism when the MDC door is opened. The MDC door is latched in the closed position by eight latching hooks connected via bellcranks, levers and spring units to the hydraulically actuated latching shaft.


ATA 52ATA 52A300/A310A300/A310

52-52-159159

A300/A310 Main Deck Cargo Compartment Door - Door Latching MechanismA300/A310 Main Deck Cargo Compartment Door - Door Latching Mechanism


ATA 52ATA 52A300/A310A300/A310

52-52-160160

A300/A310 Main Deck Cargo Compartment Door - Locking Indication SystemA300/A310 Main Deck Cargo Compartment Door - Locking Indication System

The locking indicator flags are located at the outer lower edge of the cargo door above the latching hooks. They are connected to the locking shaft via adjustable push-rods.

The locking indicator flags provide an indication if the cargo door is not properly closed and locked. When the cargo door is closed and locked, the indicator flags must be flush with the outer skin of the MDC door.


ATA 52ATA 52A300/A310A300/A310

52-52-161161

A310 Main Deck Cargo Compartment Door - Centering Guide and Locking Indicator AssemblyA310 Main Deck Cargo Compartment Door - Centering Guide and Locking Indicator Assembly


ATA 52ATA 52A300/A310A300/A310

52-52-162162

A300/A310 Main Deck Cargo Compartment (MDCC) DoorA300/A310 Main Deck Cargo Compartment (MDCC) Door Door Operation - General Door Operation - General

Operation Door Opening To unlock the MDC door, push the hinge flap in and pull the locking lever out of the door recess and down to the UNLOCKED position. This causes the locking shaft to turn and the related safety cams move away from the recess of the latching hooks. At the same time the vent door opens and the locking indicator flags come in view. To get access to the outside operation panel, open the access door 231AL. When the door toggle switch of the operation panel is pushed to the 'UP' position and the residual pressure warning light is off, the latching actuator rotates the latching shaft. The latching hooks disengage from the eccentric bolts of the door sill area and the locking indicator flaps are moved via pushrods to indicate the unlocked condition. Then, the door actuator is hydraulically operated and opens the MDC door as required. NOTE : If the residual pressure warning light is on it is impossible to operate the cargo door until the cabin overpressure is equalized via the vent door. When the MDC door is opened, the lever roller of the interlock mechanism ceases to contact the fuselage fitting, permitting a spring to extend. Extension of the spring causes the lever to rotate and via a link moves the pawl into contact with a cam on the latching shaft thus preventing rotation of the latching shaft. The latching shaft is connected to the locking shaft by a telescopic unit which is fully compressed when the MDC door is unlatched and slightly open. The pawl engages with the latching shaft thus preventing a reverse movement of the latching shaft. NOTE : It is also possible to open the MDC door from the inside. In this case use: - the inside locking lever of the MDC door - the inside operation panel between STA1315/FR17 and STA1340/FR18

Door Closing NOTE : Before starting cargo door closing procedure, it is necessary to put the loading bridges in the door sill area into raised position. Otherwise the MDC door control circuit is interrupted. When the door toggle switch on the operation panel is pushed to the 'DOWN' position, the door actuator is hydraulically operated to close the MDC door. Before the MDC door closes fully the lever roller of the interlock mechanism runs on the related fuselage fitting, compressing the spring and releasing the latching shaft. When the MDC door is closed, the latching actuator is hydraulically operated and moves the latching shaft to cause the latching hooks to engage with the eccentric bolts of the door sill area. When the latching hooks are fully engaged the LATCHED indication lamp on the operation panel comes on. If the locking lever is pushed into the LOCKED position this causes the locking shaft to turn so that the vent door closes and the locking cams engage with the latching hooks. Simultaneously the locking indicator flags are retracted via pushrods so that they are flush with the outer skin of the MDC door.


ATA 52ATA 52A300/A310A300/A310

52-52-163163

A300/A310 Main Deck Cargo Compartment (MDCC)A300/A310 Main Deck Cargo Compartment (MDCC)Door Door Operation - GeneralDoor Door Operation - General

MDCC Door Operation PanelsMDCC Door Operation Panels1329VU / 1331VU1329VU / 1331VU

Door Latching MechanismDoor Latching Mechanism


ATA 52ATA 52A300/A310A300/A310

52-52-164164

A300/A310 Main Deck Cargo Compartment Door SystemA300/A310 Main Deck Cargo Compartment Door System Component Locations Component Locations

Component Location Component Location –– MDCC Door System MDCC Door System -------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- 3054 CHECK VALVE 3055 CHECK VALVE 3060 MANIFOLD 148 148XZ 29-13-37 3083 ELECTRIC PUMP CHECK VALVE 148 148XZ 29-24-13 3084 ELECTRIC PUMP DELIVERY FILTER 148 148XZ 29-24-12 3085 HAND PUMP 148 148XZ 52-33-11 3086 PRESSURE RELIEF VALVE 122 148XZ 52-33-22 3734 SEQUENCE VALVE 132 811 52-33-24 3735 SEQUENCE VALVE 152 812 7MJ DOOR ACTUATOR 132 811 52-33-18 9MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12 15MJ CONTROL VALVE 122 811 52-33-15 25GX ELECTRIC PUMP 148 148XZ 29-24-11 3054 CHECK VALVE 3055 CHECK VALVE 3060 MANIFOLD 148 148XZ 29-13-37 3083 ELECTRIC PUMP CHECK VALVE 148 148XZ 29-24-13 3084 ELECTRIC PUMP DELIVERY FILTER 148 148XZ 29-24-12 3085 HAND PUMP 148 148XZ 52-33-11 3086 PRESSURE RELIEF VALVE 122 148XZ 52-33-22 3389 CHECK VALVE 132 811 52-33-13 3732 FILTER SCREEN 122 811 3734 SEQUENCE VALVE 132 811 52-33-24 3735 SEQUENCE VALVE 152 812 7MJ DOOR ACTUATOR 132 811 52-33-18 9MJ ELECTRO-MECHANICAL SELECTOR VALVE 148 148XZ 52-33-12

-------------------------------------------------------------------------------- FIN FUNCTIONAL DESIGNATION PANEL ZONE ACCESS ATA DOOR REF -------------------------------------------------------------------------------- 3331 DOOR LATCHING ACTUATOR 835 835 52 -33-52 3350 DOOR ACTUATOR 835 835 52 -33-51 3354 SWIVEL PIPE ASSEMBLY 233 835 52 -36-27 3355 SWIVEL PIPE A SSEMBLY 233 835 52 -36-27 3396 MDC CHECK VALVE 232 232AW 52 -33-54 3397 MDC CHECK VALVE 232 232AW 52 -33-54 3398 RESTRICTOR 835 835 32MJ MDC SELECTOR CONTROL VALVE 134 811 52 -33-53 33MJ MDC SELECTOR CONTROL VALVE 232 232AW 52 -33-53 34MJ MDC SELECTOR CONTROL VALVE 232 232AW 52-33-53


ATA 52ATA 52A300/A310A300/A310

52-52-165165

A300/A310 Main Deck Cargo Compartment Door SystemA300/A310 Main Deck Cargo Compartment Door SystemComponent LocationsComponent Locations


ATA 52ATA 52A300/A310A300/A310

52-52-166166

A300/A310 Main Deck Cargo Compartment Door SystemA300/A310 Main Deck Cargo Compartment Door System Selector Control Valve Selector Control Valve

NOTE: The Selector Control Valve FIN 32MJis also known as the HydraulicPriority Valve.

NOTE: The MDCC Door Selector ControlValve 32MJ (3364) installed in theFuselage Structural area betweenSTA1817/FR27 and STA1870/FR28prevents simultaneous operation ofthe MDCC and FWD / AFTCargoCompartment Doors by blocking thelast actuated Door Hydraulic System.


ATA 52ATA 52A300/A310A300/A310

52-52-167167

A300/A310 Main Deck Cargo Compartment Door SystemA300/A310 Main Deck Cargo Compartment Door SystemDoor Selector Control Valve FIN 32MJDoor Selector Control Valve FIN 32MJ


ATA 52ATA 52A300/A310A300/A310

52-52-168168

A300 Main Deck Cargo Compartment DoorA300 Main Deck Cargo Compartment DoorDoor Opening Positions - GeneralDoor Opening Positions - General

For the operation of the MDC door there is an outboard operation panel. The inboard operation panel 1329VU is installed in the LH sidewall panel 231KX between STA1215/FR17 and STA1340/FR18. The outboard operation panel 1331VU is integrated in the outer ski n between STA1817/FR27 and STA1870/FR28 and covered by the access panel 231AL. The door actuator 3350 is installed at the top center of the MDC door between the trunnion yoke of the door structure and scissor mechanism. When the door actuator 3350 extends or retracts, the piston rod acts upon the scissor mechanism which closes or opens the MDC door. The opening and closing rate of the MDC door is determined by restrictors installed in the LH and RH valve block. Both valve blocks are attached on the piston rod side of the door actuator housing and have a direct hydraulic connection to the door actuator 3350 to retain the MDC door in each opening position. A pressure relief valve installed in the RH valve block, prevents overloading of the door actuator in case of high wind loads or thermal expansion of the hydraulic fluid. The catch hook assembly of the door actuator safeties the MDC door in the 70° - or 145° opening position (safe position). The catch hook assembly is operated by the spring-loaded pistons (part of the LH and RH valve blocks) via shackles and clevises. The pistons retract hydraulically before the door actuator is pressurized and extend as soon as the MDC door is in the "safe position".

The door actuator is pressurized by MDC selector control valve 34MJ (3363) installed behind lower sidewall panel between STA1393/FR19 and STA1449/FR20. The return line of this valve is provided with MDC check valve 3397. Access to MDC selector control valve 34MJ (3363) and MDC check valve 3397 is gained through a cutout of the lower sidewall panel 232AW. The latching actuator 3331 is installed between the trunnion yoke of the door structure and the latching shaft in the lower MDC door area at STA1472/FR20B. The latching actuator 3331 is pressurized by the MDC selector valve 33MJ (3362) installed behind lower sidewall panel between STA1393/FR19 and STA1449/FR20. Pressurizing of the latching actuator 3331 results in retraction or extension of the piston rod rotating the latching shaft of the latching mechanism and the MDC door is unlocked or locked. The MDC door latching/unlatching cycle is limited by the restrictor 3398. The return line of MDC selector valve 33MJ (3362) is provided with MDC check valve 3396. Access to MDC selector control valve 33MJ (3362) and MDC check valve 3396 is gained through a cutout of the lower sidewall panel. The swivel pipe assemblies 3354 and 3355 connect the pressure lines and return lines of the MDC door hydraulic system in the interface area fuselage/door structure. The MDC selector control valve 32MJ (3364) installed in the framework area between STA1817/FR27 and STA1870/FR28 prevents simultaneous operation of the MDC and FWD cargo compartment doors by blocking the last actuated system.


ATA 52ATA 52A300/A310A300/A310

52-52-169169

A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorDoor Opening PositionsDoor Opening Positions


ATA 52ATA 52A300/A310A300/A310

52-52-170170

A300/A310 Main Deck Cargo Compartment Door Hydraulic SystemA300/A310 Main Deck Cargo Compartment Door Hydraulic SystemDoor Operation DescriptionDoor Operation Description

For the operation of the MDC door there is an outboard operation panel. The inboard operation panel 1329VU is installed in the LH sidewall panel 231KX between STA1215/FR17 and STA1340/FR18. The outboard operation panel 1331VU is integrated in the outer ski n between STA1817/FR27 and STA1870/FR28 and covered by the access panel 231AL. The door actuator 3350 is installed at the top center of the MDC door between the trunnion yoke of the door structure and scissor mechanism. When the door actuator 3350 extends or retracts, the piston rod acts upon the scissor mechanism which closes or opens the MDC door. The opening and closing rate of the MDC door is determined by restrictors installed in the LH and RH valve block. Both valve blocks are attached on the piston rod side of the door actuator housing and have a direct hydraulic connection to the door actuator 3350 to retain the MDC door in each opening position. A pressure relief valve installed in the RH valve block, prevents overloading of the door actuator in case of high wind loads or thermal expansion of the hydraulic fluid. The catch hook assembly of the door actuator safeties the MDC door in the 70° - or 145° opening position (safe position). The catch hook assembly is operated by the spring-loaded pistons (part of the LH and RH valve blocks) via shackles and clevises. The pistons retract hydraulically before the door actuator is pressurized and extend as soon as the MDC door is in the "safe position".

The door actuator is pressurized by MDC selector control valve 34MJ (3363) installed behind lower sidewall panel between STA1393/FR19 and STA1449/FR20. The return line of this valve is provided with MDC check valve 3397. Access to MDC selector control valve 34MJ (3363) and MDC check valve 3397 is gained through a cutout of the lower sidewall panel 232AW. The latching actuator 3331 is installed between the trunnion yoke of the door structure and the latching shaft in the lower MDC door area at STA1472/FR20B. The latching actuator 3331 is pressurized by the MDC selector valve 33MJ (3362) installed behind lower sidewall panel between STA1393/FR19 and STA1449/FR20. Pressurizing of the latching actuator 3331 results in retraction or extension of the piston rod rotating the latching shaft of the latching mechanism and the MDC door is unlocked or locked. The MDC door latching/unlatching cycle is limited by the restrictor 3398. The return line of MDC selector valve 33MJ (3362) is provided with MDC check valve 3396. Access to MDC selector control valve 33MJ (3362) and MDC check valve 3396 is gained through a cutout of the lower sidewall panel. The swivel pipe assemblies 3354 and 3355 connect the pressure lines and return lines of the MDC door hydraulic system in the interface area fuselage/door structure. The MDC selector control valve 32MJ (3364) installed in the framework area between STA1817/FR27 and STA1870/FR28 prevents simultaneous operation of the MDC and FWD cargo compartment doors by blocking the last actuated system.


ATA 52ATA 52A300/A310A300/A310

52-52-171171

A300/A310 Main Deck Cargo CompartmentA300/A310 Main Deck Cargo CompartmentDoor Hydraulic System SchematicDoor Hydraulic System Schematic


ATA 52ATA 52A300/A310A300/A310

52-52-172172

A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorNormal Opening ProcedureNormal Opening Procedure

MAIN DECK CARGO (MDC) DOOR - MAINTENANCE PRACTICES 1. Equipment and Materials -------------------------------------------------------------------------------- ITEM DESIGNATION -------------------------------------------------------------------------------- A. Access Platform, 4.6 to 7 m (15 to 23 ft.) B. Lockwire, Corrosion Resistant Steel, Dia 0,8 mm (0.032 in) C. 98A52308006000 Hoisting Sling D. 98A52308002000 Support Struts Referenced Procedure - 24-41-00, P. Block 301 AC External Power Control - 52-30-00, P. Block 301 FWD and AFT Cargo Compartment Doors - Special Precautions 2. Procedure A. Job Set-Up (1)Connect electrical ground power unit and energize the aircraft electrical network (Ref. 24-41-00, P. Block 301). (2)Make certain that electronics racks ventilation is correct. (3)Make certain that the following circuit breakers are closed: -------------------------------------------------------------------------------- PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------- 101VU ELEC HYD PUMP 23GX GEN2/B08 133VU HYDRAULIC/ACCU PRESS CTL & 7GX 333/T51 CARGO DOOR PUMP (4)Put the access platform in position below the MDC door and access door 231AL. WARNING : STAY CLEAR OF DOOR MOVING AREA DURING OPENING AND CLOSING OF THE MDC DOOR. CAUTION : DO NOT OPERATE MDC DOOR WHEN WIND SPEED EXCEEDS 40 KNOTS. CLOSE MDC DOOR IMMEDIATELY WHEN WIND SPEED IS EXPECTED TO EXCEED 60 KNOTS. CAUTION : WHENEVER THE MDC DOOR REMAINS OPEN DURING DISCONNECTION OF COMPONENTS OF THE YELLOW HYDRAULIC SYSTEM, MAKE SURE THAT THE DOOR ACTUATOR IS FILLED WITH HYDRAULIC FLUID. IF NOT, BLEED ACTUATOR AND PRESSURIZE LINES BEFORE CLOSING MDC DOOR (REF. 52-30-00, P. BLOCK 301).

B. Normal Opening of the MDC Door NOTE : This procedure describes the normal opening procedure from the outside. For opening from the inside, use the inside locking lever and the inside operation panel near STA1313/FR17. (1)Open the access door 231AL to get access to the outside operation panel 1331VU. (2)Make sure that the warning light "RES PRESS" (4) is off. CAUTION : DO NOT OPEN MDC DOOR IF RESIDUAL PRESSURE WARNING LIGHT IS ON. (3)Push the handle flap (1) in and push the locking lever (2) away from the MDC door and down to the UNLOCKED position. (4)Push the door toggle switch (5) to "UP" position and hold until the MDC door stops automatically in 70ø opening position and the indicator light (7) comes on. NOTE : If necessary, the movement of the MDC door can be stopped at any intermediate position by releasing the door toggle switch (5). If the MDC door is in an intermediate position, two acoustic warning horns come on to warn persons. The acoustic signal stops as soon as the MDC door is moved to the 70ø position. (5)Release and operate the door toggle switch (5) again to move the MDC door in the 145ø opening position. NOTE : The movement of the MDC door stops in any intermediate position as soon as the door toggle switch (5) is released. In this case two warning horns come on to warn persons. The acoustic signal stops immediately when the MDC door is moved in the 70ø or 145ø opening position. (6)If necessary, set the light switch "AREA" (9) and/or light switch "COMPT" (3) to "ON" position.


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A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorNormal Operation - OpeningNormal Operation - Opening


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A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorNormal Closing ProcedureNormal Closing Procedure


C. Normal Closing of the MDC Door (Ref. Fig. 201) CAUTION : THE MDC DOOR SILL AREA MUST BE CLEAR OF ANY OBSTRUCTIONS. (1)Set the door toggle switch (5) to the DOWN position. NOTE : Initially the MDC door moves in the open direction for approximately 15 sec. so that the catch hook of the door actuator is released. Then the MDC door moves automatically in the close direction. (2)Hold the door toggle switch (5) in the DOWN position until MDC door is fully closed and the indicator light "LATCHED" (6) comes on. (3)Push locking lever (2) up to the LOCKED position so that it engages in the recess of the handle flap (1). (4)Check that the indicator light "LATCHED" (6) on the operation panel is off. (5)Check that all eight locking indicator flaps are flush with the door contour and the vent door is closed.


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A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorNormal Operation - ClosingNormal Operation - Closing


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A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorManual Opening ProcedureManual Opening Procedure


D. Manual Opening of the MDC Door NOTE : Two operators are required for this operation mode. (1)Push the handle flap in and pull the locking lever (2) at the MDC door down to the UNLOCKED position. (2)Manually position the levers (12) and (13) on the selector valves 9MJ and 10MJ located in the MLG compartment down to manual operation position. (3)To get access to the MDC selector control valves 3362 (33MJ) and 3363 (34MJ) proceed as follows: - disconnect the necessary quick-release fasteners of the smoke curtains to get access to the access cover, - remove the access cover from the RH sidewall panel located between STA1393/FR19 and STA1446/FR20. (4)Unlatch the MDC door as follows: - on the MDC selector control valve 33MJ (15) press and hold the pushbutton I (19), - operate the handpump (14) in the RH MLG well to pressurize the latching actuator, - on the MDC selector control valve 33MJ (15) release the pushbutton I (19) after approx. 30 sec. (5)Open the MDC door as follows: - on the MDC selector control valve 34MJ (16) press and hold the pushbutton I (17), - operate the handpump (14) to move the MDC door in the open direction, - on the MDC selector control valve 34MJ (16) release the pushbutton I (17) when the MDC door has reached the required opening position. (6)Set the levers (13) and (12) to up in the normal position. (7)Install the access cover on the RH sidewall panel located between STA1393/FR19 and STA1446/FR20 and reconnect the smoke curtain.


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E. Manual Closing of the MDC Door CAUTION : THE LOADING BRIDGES IN THE DOOR SILL AREA MUST BE IN RAISED POSITION BEFORE CLOSING THE MDC DOOR. NOTE : Two operators are required for this operation mode. (1)Manually position the levers (12) and (13) on the selector valves 9MJ and 10MJ in the RH MLG compartment down to the manual operation position. (2)To get access to the MDC selector control valves 3362 (33MJ) and 3363 (34MJ) proceed as follows: - disconnect the necessary quick-release fasteners of the smoke curtains to get access to the access cover, - remove the access cover from the RH sidewall panel located between STA1393/FR19 and STA1446/FR20. (3)If the MDC door rests in the catch hooks (34) of the door actuator (30), relatch them prior to closing the MDC door as follows: - press and hold the pushbutton I (17) on the MDC selector valve 34MJ (16) and operate the handpump (14) to lift the MDC door until the catch hook (34) is clear of the door actuator (30), - cut and remove the lockwire and remove the bolt (31) from the stowage position on the door actuator (30), - remove the blanking cap (33) from the bore (32) of the check valve block, - screw the bolt (31) into the bore (32) of the check valve block until the catch hook (34) is lowered so that the mechanical locking of the door actuator becomes ineffective. (4)If the MDC door is in the 145ø open position, proceed as follows: - on the MDC selector control valve 34MJ (16) press and hold the pushbutton I (17) to pressurize the door actuator, - operate the handpump (14) until a considerable increase of force is noticed on the handpump lever, - on the MDC selector control valve 34MJ (16), press and hold the pushbutton II (18) until the MDC door starts to close. - operate the handpump (14) until the MDC door moves beyond the dead center.


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A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorManual Closing ProcedureManual Closing Procedure

E. Manual Closing of the MDC Door - CONTINUED (5)To fully close the MDC door, remove the hydraulic locking device of the door actuator (30) by manual operation of the bypass/check valve (35) as follows: - turn the pivot (36) with a spanner and hold it so that the MDC door moves slowly downwards, - turn the pivot (36) back to the normal position when the MDC door is flush with the fuselage door frame. (6)If necessary, operate the handpump (14) until the MDC door is fully closed. (7)On the MDC selector control valve 33MJ (15) press and hold the pushbutton II (20) to pressurize the latching actuator. (8)Operate the handpump (14) until the MDC door is latched. (9)On the MDC selector control valve 33MJ (15) release the pushbutton II (20) and stop handpump (14) operation. (10)Push locking lever (2) up to the LOCKED position. (11)Position the levers (12) and (13) on the selector valves 9MJ and 10MJ up to the normal position. (12)Check that all eight locking indicator flags are fully retracted. (13)Install the access cover on the RH sidewall panel located between STA1393/FR19 and STA1446/FR20 and reconnect the smoke curtain.


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A300/A310 Main Deck Cargo Compartment DoorA300/A310 Main Deck Cargo Compartment DoorOpening Door with CraneOpening Door with Crane


F. Opening of the MDC Door with a Crane CAUTION : DO NOT OPEN MDC DOOR TO 145ø USING A CRANE. NOTE : Two operators are required for this operation mode. (1)Remove the access panel 835CL (24) to get access to the latching shaft (22). (2)Pull the locking lever (1) at the MDC door out of its grip recess down to the UNLOCKED position. (3)Turn the latching shaft (22) to the fully unlatched position, using the handpump lever with the extension (23) stowed in the RH MLG well. (4)Hook the MDC door hoisting sling PN 98A52308006000 (21) into the crane and connect it to the lower hoisting lug (29) of the MDC door. (5)Operate the crane until the MDC door reaches the 70ø position. (6)Install the support struts PN 98A52308002000 (27) to the MDC door as follows: - position the support struts (27) between the MDC door and the fixture points of the door fuselage frame, - adjust the strut length by turning the turnbuckle (25), - connect the support struts (27) to the MDC door and door fuselage frame. (7)Remove the hoisting sling (21) from the MDC door hoisting lug (29).


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G. Closing of the MDC Door with a Crane CAUTION : THE LOADING BRIDGE SECTIONS IN THE DOOR SILL AREA MUST BE IN THE RAISED POSITION BEFORE CLOSING THE MDC DOOR. NOTE : Two operators are required for this operation mode. (1)Hook the MDC hoisting sling PN 98A52308006000 (21) into the crane and connect it to the lower hoisting lug (29) of MDC door. (2)Connect the rope (28) which belongs to the hoisting sling (21) to the lower hoisting lug (29) of the MDC door. (3)To get access to the MDC selector control valves 3362 (33MJ) and 3363 (34MJ) proceed as follows: - disconnect the necessary quick-release fasteners of the smoke curtains to get access to the access cover, - remove the access cover from the RH sidewall panel located between STA1393/FR19 and STA1446/FR20. (4)If the MDC door rests in the catch hook (34) of the door actuator (30), release the catch hook (34) prior to closing the MDC door as follows: NOTE : This causes the mechanical locking mechanism of the door actuator (30) to become ineffective. - remove and discard the lockwire from bolt (31) and remove it from the stowage position, - remove the blanking cap (33) from the bore (32), - screw the bolt (31) into the bore (32) until the catch hook (34) is released. (5)If the MDC door is in the 145ø position, proceed as follows: - on the MDC selector control valve 34MJ (16) press and hold the pushbutton II (18) until the MDC door moves beyond the dead center, - operate the crane downwards and simultaneously pull down the MDC door with the rope (28) to move MDC door in the closing direction. (6)To fully close the MDC door, remove the hydraulic locking device of the door actuator (30) by manual operation of bypass/check valve (35) as follows: - cut and remove the lockwire from the bolt (36), - remove the bolt (36) from the first bore (38) of the fork and bore of the operating lever (39), - push the operating lever (39) in the direction of the valve body and install the bolt (36) in the second bore (3) of the fork and the bore of the operating lever (39). (7)On the MDC selector control valve 34MJ (16), release the pushbutton II (18) when the MDC door is flush with the fuselage door frame. NOTE : If the MDC door is not flush, operate the handpump until the MDC door is correctly closed.


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G. Closing of the MDC Door with a Crane - CONTINUED (8)Reselect the hydraulic locking device on the bypass/check valve to the normal position as follows: - remove the bolt (36) from the second bore (37) of the fork and bore of the operating lever (39), - place the operating lever (39) in the normal position and install the bolt (36) in the first bore (38) and the bore in the operating lever (39), - tighten the bolt (36) and safety it with lockwire. (9)Remove the access panel 835CL (24) to get access to the latching shaft (22). (10)If required, push the MDC door manually in the fully closed position and hold it. (11)If necessary, remove the access panel 835CL (24) to get access to the latching shaft (22). (12)On the MDC selector control valve 33MJ (15) press and hold the pushbutton II (20) to latch the MDC door. (13)Turn the latching shaft (22) to the latched position using the handpump lever with extension (23) stowed in the RH MLG well. (14)On the MDC selector control valve 33MJ (15) release the pushbutton II (20). (15)Push the locking lever (2) of the MDC door up to the LOCKED position so that it engages in the recess of the handle flap (1). (16)Check that all the locking indicator flags are fully retracted and that the vent door is closed. (17)Reset the catch hook (34) to normal position as follows: - remove the bolt (31) from the bore (32) and install it to the stowage position, - safety the bolt (31) with the lockwire, - install the blanking cap (33) to the bore (32). (18)Install the access panel 835CL (24) on the MDC door. (19)Install the access cover on the RH sidewall panel located between STA1393/FR19 and STA1446/FR20 and reconnect the smoke curtain. (20)Remove the hoisting sling (21) from the MDC door hoisting lug (30). H. Close-Up (1)Check that working areas are clear of tools and materials. (2)De-energize aircraft electrical network and disconnect the electrical ground power unit (Ref. 24-41-00, P. Block 301). (3)Remove access platform(s).


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A300/Some A310 Main Deck Cargo Compartment DoorsA300/Some A310 Main Deck Cargo Compartment DoorsDoor Warnings and ECAM Activation - General DescriptionDoor Warnings and ECAM Activation - General Description

General Description – Upper Cargo Door The door warning system electrically monitors the condition, that is, "open/not locked" and "closed/locked" positions of the following doors: • MAIN DECK, FWD, AFT and BULK Cargo Compartment Doors A residual pressure warning system is also installed in the MAIN DECK Cargo Compartment Doors. Incorporated in each door are warning switches which are open when the door is opened or unlocked. Displays are provided for the flight crew on the cockpit center pedestal. These comprise two MASTER CAUTION pushbutton switches, two Cathode Ray Tubes (CRTs) and a selection control panel, all of which form part of the Electronic Centralized Aircraft Monitoring (ECAM) system.

The MAIN DECK Cargo Compartment Door is monitored by two switches indicating "door open" and "door not locked": The residual pressure warning light installed in the outside operation panel 1331VU and inside operation panel 1329VU of the MAIN DECK Cargo (MDC) door is in the form of a red light. If this light illuminates, the MDC door can not be opened until the differential pressure between MDC compartment and aircraft environment is equal.


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A300/Some A310 Courier Passenger/Crew DoorsA300/Some A310 Courier Passenger/Crew DoorsDoor Warnings and ECAM Activation - General ViewDoor Warnings and ECAM Activation - General View


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Some A310 Main Deck Cargo Compartment DoorsSome A310 Main Deck Cargo Compartment DoorsDoor Warnings and ECAM Activation - General DescriptionDoor Warnings and ECAM Activation - General Description

General Description – Upper Cargo Door The door warning system electrically monitors the condition, that is, "open/not locked" and "closed/locked" positions of the following doors: • MAIN DECK, FWD, AFT and BULK Cargo Compartment Doors A residual pressure warning system is also installed in the MAIN DECK Cargo Compartment Doors. Incorporated in each door are warning switches which are open when the door is opened or unlocked. Displays are provided for the flight crew on the cockpit center pedestal. These comprise two MASTER CAUTION pushbutton switches, two Cathode Ray Tubes (CRTs) and a selection control panel, all of which form part of the Electronic Centralized Aircraft Monitoring (ECAM) system.

The MAIN DECK Cargo Compartment Door is monitored by two switches indicating "door open" and "door not locked": The residual pressure warning light installed in the outside operation panel 1331VU and inside operation panel 1329VU of the MAIN DECK Cargo (MDC) door is in the form of a red light. If this light illuminates, the MDC door can not be opened until the differential pressure between MDC compartment and aircraft environment is equal.


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Some A310 Courier Passenger/Crew DoorsSome A310 Courier Passenger/Crew DoorsDoor Warnings and ECAM Activation - General ViewDoor Warnings and ECAM Activation - General View


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Airbus 52 A300 A310 Doors

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