*
Seals, pressurization and acoustic
*
Stop pins and pads, pressurization
*
Handle mechanism, interior and exterior
*
Latch and primary lift mechanism
*
Secondary lift mechanism
*
Vent Door mechanism
EFFECTIVITY BEJ ALL 52-11-00
Page 2
D633W101-BEJ Sep 05/2002
PASSENGER ENTRY DOOR SYSTEM -INTRODUCTION
*
Flight lock mechanism
*
Hinge and programing chain mechanism
*
Hold open mechanism
*
Mode select mechanism
*
Emergency power assist system (EPAS)
*
Girt bar mechanism
*
Floor fittings.
Linings cover the hinge and upper part of the door. A bustle covers the lower part of the door.
Seals for pressurization are on the top and the sides of the door cutout and on the bottom part of the door. Acoustic seals (not shown) for noise reduction are on the sides of the door.
Stop pins and pads (not shown) move the force of pressurization on the door into the fuselage. The pins are on the sides of the door and the stop pads are on the sides of the door cutout.
All doors have an escape/slide raft installed under the bustle. See the door-mounted escape slide section in the equipment and furnishings chapter for more information about the escape/ slide raft (SECTION 25-66).
Handles to unlock and unlatch or to latch and lock the door are on the inside and outside of the door.
The latch and primary lift mechanism (not shown) lowers and latches the door or unlatches and starts to lift the door when the door is unlocked. The mechanism has mechanical devices controlled by the interior and the exterior handles.
The secondary lift mechanism (not shown) lifts and holds the door up when you unlock the door. The mechanism has mechanical devices controlled by the latch and primary lift mechanism.
The vent Door mechanism vents cabin pressure when you unlatch a door and prevent door unlatching if cabin pressure is above safe limits (>.21 psid). The mechanism has mechanical devices controlled by the latch and primary lift mechanism.
Flight lock mechanism (not shown) prevents door unlatching when the airplane airspeed is above safe limits (=/>80 knots).
The hinge and programing chain mechanism attaches the door to the fuselage, controls door translation and the speed that the door opens or closes.
The hold open mechanism locks the door in the full open position. The mechanism is part of the door hinge.
EFFECTIVITY BEJ ALL 52-11-00
Page 3
D633W101-BEJ Sep 05/2002
PASSENGER ENTRY DOOR SYSTEM -INTRODUCTION
Mode select mechanism enables or disables the emergency power assist system (EPAS) and the deployment of the escape slide. The mechanism has mechanical and electrical devices that are controlled by the position of a mode select handle. The handle is on the inside of the door. A guard prevents accidental movement of the handle.
The mode select handle has these positions: AUTO and MANUAL. In the auto mode operation, when you move the internal door handle to the open position:
*
The emergency power assist system (EPAS) (not shown) moves the door to the open position.
*
The emergency escape slide/raft deploys (does not apply to doors that are over the wing).
Girt bar mechanism (not shown) is in the lover part of the door. The mechanism controls the position of the escape slide raft girt bar. The mechanism can lock the girt bar to the door or to the floor fittings.
Two floor fittings hold the girt bar and give visual indication when the girt bar is locked in the fittings.
All passenger entry doors have proximity sensors (not shown) that give door close, latched and lock information to the door warning system. See the door warning section for more information about the proximity sensors (SECTION 52-71).
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：777 AMM 飞机维护手册 Doors 舱门(5)
