MD-11 Flight Crew Operations Manual
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Aircraft General -
Description and Operation
Agen.10.27
Cockpit Door
The cockpit door is manually operated by a standard door knob. If electrical power
is available, the door locks electricomagnetically by a door selector located on the
overhead panel. A totally independent dead bolt lock is installed on the cockpit
side, with a key lock on the cabin side. The cockpit door has decompression panels
and a viewing port is installed to provide a view of the cabin area. An Emergency
Access Panel at the cabin side can provide access to the cockpit. Entering an
Emergency Access Code on the 6-button keypad will unlock the cockpit door.
Lavatory Door
Lavatory doors are manually operated from inside the lavatory by a sliding bolt
lock. Position of the lock is indicated by VACANT/OCCUPIED sign on the cabin
side of door. Each door can be unlocked with a knob behind the hinged
LAVATORY sign.
Cabin Door
Passenger aircraft have eight cabin doors, four on each side, for normal passage
or emergency escape.
Each cabin door opens by moving slightly inboard and then sliding up into the
ceiling. The doors have interior and exterior controls for door operation. The two
forward cabin doors are not identical to the other cabin doors. They have different
interior controls and operating instructions.
The six remaining (mid, overwing, and aft) doors on passenger aircraft have
identical interior controls placarding and operating procedures.
A polarized viewport is installed on the upper portion of all cabin doors.
Polarization (clear to dark) can be adjusted by rotating a knob in the center of the
port.
Interior controls for normal operation consist of a slide arming lever located on the
structure adjacent to door and a door control switch . Escape slides must be
disarmed before the switch or switch-lights can be used to open or close door.
Exterior controls, placarding and operating procedures are identical for all cabin
doors. Exterior controls are located in a recess in the fuselage forward of door and
consists of a door control handle, a door control switch, and an auxiliary handle.
The door control handle arms and disarms the escape slide. The door control
switch opens and closes the door. An auxiliary handle used in conjunction with a
door control handle will close the door by free fall.
A socket drive fitting is installed for opening and closing the left forward cabin
door from outside with no electrical power on the aircraft. The socket drive fitting
may be operated manually or with a portable air/electric drive motor.
October 02, 2006
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