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AIRCRAFT SYSTEMS
EQUIPMENT
FLIGHT DECK - ELECTRICAL SUPPLY
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A330/A340 FLEET DSC-25-10-90 P 2/2
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
EQUIPMENT
COCKPIT DOOR SECURITY SYSTEM - DESCRIPTION
A330/A340 FLEET DSC-25-11-10 P 1/4
FCOM 19 AUG 10
COCKPIT DOOR DESCRIPTION
Applicable to:
A forward-opening hinge door separates the cockpit from the passenger compartment. It has an
electric-locking latch, controlled by the flight crew. In normal conditions, when the door is closed, it
remains locked. When there is a request to enter the cockpit, the flight crew can authorize entry by
unlocking the door, that remains closed until it is pushed open.
When the flight crew does not respond to requests for entry, the door can also be unlocked by
the cabin crew, by entering a two to seven-digit code (programmed by the airline) on the keypad,
installed on the door post. The door is bulletproof and fully compliant with rapid decompression
requirements.
A mechanical override enables the flight crew to open the door from the cockpit side.
The evacuation and decompression panel enables the flight crew to evacuate the cockpit, in case of
an emergency, when the door is jammed or stuck.
This panel can only be removed from the cockpit side by kicking it open.
The panel also automatically falls open, in case of rapid cabin decompression (in case of rapid
decompression in the cockpit, the CDLS automatically unlocks the door).
In case of an electrical supply failure, the door is automatically unlocked, but remains closed.
A Circuit Breaker (C/B) box, is installed on the left-hand side of the door frame.
This C/B box has three C/Bs. Each C/B is connected to one cockpit door electrical latch.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
EQUIPMENT
COCKPIT DOOR SECURITY SYSTEM - DESCRIPTION
A330/A340 FLEET DSC-25-11-10 P 2/4
FCOM 19 AUG 10
COCKPIT DOOR DESCRIPTION
Applicable to: ,
A forward-opening hinge door separates the cockpit from the passenger compartment. It has an
electric-locking latch, controlled by the flight crew. In normal conditions, when the door is closed, it
remains locked. When there is a request to enter the cockpit, the flight crew can authorize entry by
unlocking the door, that remains closed until it is pushed open.
When the flight crew does not respond to requests for entry, the door can also be unlocked by
the cabin crew, by entering a two to seven-digit code (programmed by the airline) on the keypad,
installed on the door post. The door is bulletproof and fully compliant with rapid decompression
requirements.
A mechanical override enables the flight crew to open the door from the cockpit side.
The evacuation and decompression panel enables the flight crew to evacuate the cockpit, in case of
an emergency, when the door is jammed or stuck.
This panel can only be removed from the cockpit side by kicking it open.
The panel also automatically falls open, in case of rapid cabin decompression (in case of rapid
decompression in the cockpit, the CDLS automatically unlocks the door).
In case of an electrical supply failure, the door is automatically unlocked, but remains closed.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
EQUIPMENT
COCKPIT DOOR SECURITY SYSTEM - DESCRIPTION
A330/A340 FLEET DSC-25-11-10 P 3/4
FCOM 19 AUG 10
A deadbolt is installed at the level of the center latch area of the cockpit door. This deadbolt enables
to bolt the door from the cockpit side, in the event that more than one looking latch strike fails, or in
the case of a total CDLS failure.
A Circuit Breaker (C/B) box, is installed on the left-hand side of the door frame.
This C/B box has three C/Bs. Each C/B is connected to one cockpit door electrical latch.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
EQUIPMENT
COCKPIT DOOR SECURITY SYSTEM - DESCRIPTION
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A330/A340 FLEET DSC-25-11-10 P 4/4
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
EQUIPMENT
COCKPIT DOOR SECURITY SYSTEM -
COCKPIT DOOR LOCKING SYSTEM (CDLS)
A330/A340 FLEET DSC-25-11-20 P 1/6
FCOM 19 AUG 10
DESCRIPTION
Applicable to: ALL
The Cockpit Door Locking System (CDLS) provides a means of electrically locking and unlocking the
cockpit door. This system is mainly composed of :
A keypad, located in the forward ‐ cabin, near the cockpit door,
‐ A toggle switch, located on the center pedestal's Cockpit Door panel,
‐ A control unit and its CKPT DOOR CONT normal panel, located on the overhead panel,
　
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