00 Cockpit Door

AL

COURSETECHNICAL TRAINING MANUCOCKPIT DOOR

SINGLE AISLE A/C MAINTENANCE

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SINGLE AISLE A/C MAINTENANCE COURSETABLE OF CONTENTS

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TECHNICAL TRAINING MANUAL

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COCKPIT DOOR

Table Of ContentsCOCKPIT DOOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CO TECHNICAL TRAINING MANUAL

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COCKPIT DOORGE

Theprevdoo(buelecCKPIT DOOR

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NERAL

cockpit door divides the cockpit from the passenger cabin. It is installed to ent or delay forced access to the cockpit from the cabin. It has reinforced

r attachment fittings together with a intrusion and penetration resistant llet proof) door. It also has a Cockpit Door Lock System (CDLS) to open it trically.


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COCKPIT DOOR / GENERAL


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CKPIT DOOR


SCRIPTION

DOORThe cockpit door opens into the flight direction and a magnetic door stop keeps it in its fully open position.The cockpit door structure is a honeycomb core bonded between prepregnated sheets. Two aluminum plates with the same dcor as the passenger cabin lining are installed on each side to prevent damage.On the cockpit door there is an upper hinge which is attached with screws to the cockpit structure. The bottom of the cockpit door has an attachment fitting, which engages with the floor structure.It has a cutout section in the door structure for the door escape hatch. In case of emergency the cockpit crew can leave the cockpit through this door escape hatch. The door escape hatch structure is the same as the door. There are two pip-pin fitting installed on the inner side of the hatch. The two pip-pins engage with the related bracket of the door structure to keep the hatch in position.The manually operated three latch mechanism keeps the cockpit door in the closed position. It is installed on the inner side of the cockpit door. It has a spring-loaded D-ring assembly, which extends or retracts the three latch tenons. The tenons engage with the catch of the electrical release strikes installed opposite in the lavatory wall. A door handle and a spyglass are in the cockpit door.



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DE s, which operate if a rapid decompression artment. The microprocessor receives signals nd the keypad. It sends a signal to operate the ght, the green or red LED of the keypad and trical release strikes. If a fault occurs in the ated CHAN 1 or CHAN 2 LED comes on, and

es on, on the cockpit door panel. If a fault elease strikes, the related strike LED comes ight comes on, on the cockpit door panel.

mpression occurs, the door is blown open gh the aircraft.CKPIT DOOR


SCRIPTION (CONTINUED)

CDLSFor cockpit security, the cockpit door is equipped with an electro-mechanically operated release system: the Cockpit Door Lock System (CDLS).A keypad is installed on the Forward Attendant Panel (FAP) side. On the front face there are two red and green LEDs and twelve pushbutton switches with the legends 0 to 9, "*" and "#".A buzzer is installed in the ceiling panel of the cockpit. A signal from the control unit operates the buzzer for a minimum of 2 seconds.A toggle switch is installed on the cockpit door panel on the center pedestal. It is a three position switch (UNLOCK, NORM and LOCK). It is spring loaded so that it returns automatically to the NORM position. This is the neutral position in which the closed cockpit door is automatically locked.An indication light is installed on the cockpit door panel. The indication is an OPEN legend and a FAULT legend. The OPEN legend comes on amber when the cockpit door is opened. The FAULT legend also comes on amber when there is a malfunction in the CDLS.Three electrical release strikes are installed on the lavatory sidewall opposite the door latch mechanism. Each of the electrical release strikes have a microswitch which operates the solenoid when it receives a signal. Then, the plunger extends so that the catch is blocked, or it retracts so that the catch is free. The center electrical release strike has an additional microswitch, which monitors the condition of the center latch mechanism. When its tenon does not engage with the catch, this causes the OPEN indication light to come on.The control unit is installed on the overhead panel. It has the legends CKPT DOOR CONT, STRIKE TOP, MID and BOT and CHAN 1 and CHAN 2. This unit manages the fault indications, time delays and door access control of the Cockpit Door Lock System. It has two

internal pressure sensoroccurs in the flight compfrom the toggle switch abuzzer, the indication lithe solenoids of the elecpressure sensors, the relthe amber fault light comoccurs in the electrical ron and the amber fault l

NOTE: If a rapid decoby the flow of air throu



COCKPIT DOOR / DESCRIPTION (CONTINUED)


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OR OPENING

CABIN TO COCKPITPush the "#" pushbutton or enter a numbered pushbutton plus the "#" pushbutton on the keypad. Then the buzzer sounds to tell the flight crew that an access into the cockpit is requested.If the flight crew sets the toggle switch to the UNLOCK position:- The control unit energizes the solenoid of the release strikes. This causes the plungers to retract so that they do not block the catches.- The control unit sends a signal to the keypad so that the green LED comes on. It shows that cockpit door is unlocked and the access is available.- The buzzer stops.Push the cockpit door into the flight direction until the magnetic stop keeps it in its fully open position. Then the amber OPEN indication light on the cockpit door panel comes on. This shows that the cockpit door is open.If the flight crew sets the toggle switch to the LOCK position:- The control unit does not energize the solenoids of the release strikes. So the plungers remain extended and block the catches.- The control unit sends a signal to the keypad so that the red LED comes on. It shows that cockpit door is locked and the access to the cockpit is not given.- The buzzer stops.In this case, the operation of the keypad and the buzzer is prevented during a specific time (adjustable between 5 and 15 min.). The flight crew can cancel this function if they set the toggle switch from the LOCK position to the UNLOCK position.


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main extended and block the catches.sends a signal to the keypad so that its red LED s that cockpit door is locked and the access to the n..eration of the keypad and the buzzer is prevented me (adjustable between 5 and 15 min). The flight is function if they set the toggle switch from the the UNLOCK position.SINGLE AISLE A/C MAINTENANCE COURSEUM25D1000000001 01 - COCKPIT DOORUNFU000

COCKPIT DOOR / DESCRIPTION (CONTINUED)

CABIN TO COCKPIT (EMERGENCY)Enter the selected four digit code plus the "#" pushbutton on the keypad. This causes the buzzer to come on continuously and the green LED to flash. The OPEN indication light on the cockpit panel flashes in amber.If the flight crew does not operate the toggle switch within a specific time (between 15 s and 2 min) :- The control unit energizes the solenoids of the release strikes. This causes the plungers to retract so they do not block the catches for 5 s.- The control unit sends a signal to the keypad. This causes the green LED to comes on for 5 s. The green LED shows that the cockpit door is unlocked and access is possible.- The OPEN indication light comes on amber for 5 s.- The buzzer stops.Push the cockpit door into the flight direction until the magnetic stop keeps it in its fully open position. Then the amber OPEN indication light on the cockpit door panel comes on. This shows that the cockpit door is open.If the flight crew sets the toggle switch to the UNLOCK position within a specific time (between 15 s and 2 min) :- The control unit energizes the solenoids of the release strikes. This causes the plungers to retract so that the do not block the catches.- The control unit sends a signal to the keypad so that the green LED comes on. The green LED shows that the cockpit door is unlocked and access is possible.- The buzzer stops.Push the cockpit door into the flight direction until the magnetic stop keeps it in its fully open position. Then the amber OPEN indication light on the cockpit door panel comes on. This shows that the cockpit door is open.If the flight crew sets the toggle switch to the LOCK position within a specific time (between 15 s and 2 min) :- The control unit does not energize the solenoid of the release strikes.

So the plungers re- The control unit comes on. It showcockpit is not give- The buzzer stopsIn this case, the opduring a specific ticrew can cancel thLOCK position to

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COCKPIT DOOR / DOOR OPENING


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CKPIT DOOR


OR OPENING (CONTINUED)

COCKPIT TO CABINLift and turn the D-ring of the center latch mechanism through 90 degrees so that its internal spring-loaded tenons retract. The tenons are disengaged from the catches and the cockpit door will open.

COCKPIT TO CABIN (EMERGENCY)Lift and turn the D-ring of the center latch mechanism through 90 degrees so that its internal spring-loaded tenons retract. Because the tenons are disengaged from the catches of the electrical release strikes and you can open the cockpit door.If the door cannot be opened normally, you can remove the door escape hatch:- Disengage the two pip-pins from the pip-pin brackets of the cockpit door to release the door escape hatch.- Then push it to the rear direction so that the cutout section of the cockpit door is free.



COCKPIT DOOR / DOOR OPENING (CONTINUED)

AIRBUS S.A.S.31707 BLAGNAC CEDEX, FRANCE

AI/STDCREFERENCE UNF03221

MAY 2003PRINTED IN FRANCEAIRBUS S.A.S. 2002

ALL RIGHTS RESERVED

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00 Cockpit Door