777 AMM 飞机维护手册 Equipment and Furnishings(37)

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Functional Description
When the door opens in the armed mode, the escape slide girt puts pressure on the bottom edge of the bustle. The alignment fittings at the bottom of the bustle click open. This permits the door to continue opening while the escape slide drops.
Training Information Point
Release the alignment fittings and latches to remove the bustle from the door. Pull the bottom of the bustle inboard to release the alignment fittings. Open the levers to release the latches at the top of the bustle.
EFFECTIVITY BEJ ALL  25-66-00 
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D633W101-BEJ  Sep 05/2002 

 

777 AIRCRAFT MAINTENANCE MANUAL

DOOR-MOUNTED ESCAPE SYSTEM -BUSTLE

EFFECTIVITY BEJ ALL  25-66-00 
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D633W101-BEJ  Jan 05/2002 

DOOR-MOUNTED ESCAPE SYSTEM -FUNCTIONAL DESCRIPTION -DEPLOYMENT

Door Handle Moved to the Open Position
When you put the door mode selector in the armed position, the girt bar locks in the floor fittings. When you move the door handle to the open position, the door unlatches. The emergency power assist system (EPAS) starts to open the door. See the passenger entry doors section for more information on the EPAS (SECTION 52-11).
Tension on the Cover Release Cable
When the door opens far enough to put tension on the cover release cable, this sequence occurs:
*
Tension at the girt clicks the bustle open

*
The door continues to move open

*
The cover release cable pulls free of the release mechanism, so it can open

*
The lower lacing cover releases from the packboard

*
The escape slide pack falls from the packboard.

Tension on the Slide Inflation Cable
When the escape slide pack falls from the packboard, the weight of the pack applies tension to the slide inflation cable. This sequence occurs:
*
Tension on the inflation cable opens the inflation cylinder valve

*
The inflation cylinder uses air from the aspirators to inflate the slide.

Manual Inflation
Sometimes the slide pack hits the ground or water before it falls far enough to apply tension to the inflation cable. If that happens the slide does not inflate automatically. A handle on the girt end of the inflation cable lets you open the inflation valve manually. Pull the handle to inflate the slide.
EFFECTIVITY BEJ ALL  25-66-00 
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D633W101-BEJ  Sep 05/2002 

 

DOOR-MOUNTED ESCAPE SYSTEM -FUNCTIONAL DESCRIPTION -DEPLOYMENT

EFFECTIVITY BEJ ALL  25-66-00 
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D633W101-BEJ  Jan 05/2002 

DOOR-MOUNTED ESCAPE SYSTEM -FUNCTIONAL DESCRIPTION -SEPARATION

General
During ditching, when passengers and crew are aboard the rafts, the rafts must move away from the airplane.
The slide raft girt attaches to the girt bar with speed lacing. Open the cover at the girt and pull the lanyard. This removes the pin and releases the speed lacing so the slide/raft can move away from the airplane. The girt bar stays attached to the airplane.
A tether stowed in the girt keeps the raft attached loosely to the airplane. A hook knife is in the raft to cut the tether when necessary.
Training Information Point
After an inflation test, remove the slide/raft from the airplane this way:
*
Support the girt end of the slide/raft

*
Remove the girt bar from the floor fittings

*
Lower the girt end of the slide/raft to the floor.

EFFECTIVITY BEJ ALL  25-66-00 
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D633W101-BEJ  Sep 05/2002 

 

DOOR-MOUNTED ESCAPE SYSTEM -FUNCTIONAL DESCRIPTION -SEPARATION

EFFECTIVITY BEJ ALL  25-66-00 
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D633W101-BEJ  Jan 05/2002 

 

 

 

　
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