777 AIRCRAFT MAINTENANCE MANUAL
PASSENGER ENTRY DOOR SYSTEM -OPERATION
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PASSENGER ENTRY DOOR SYSTEM -SYSTEM TESTS
General
ATA 52 Passenger Door Flight Locks has this systems test:
* Passenger entry doors, flight lock control test.
Passenger Entry Doors, Flight Lock Control Test
In this test, the proximity sensor electronics unit 1 (PSEU 1) sets the flight lock on all the passenger entry doors. See the proximity sensor system section for more information about proximity sensors (SECTION 32-08).
You must operate each passenger entry door to make sure that the flight lock is set. When you finish, you must select stop on the MAT or PMAT. No pass/fail shows for this test.
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PASSENGER ENTRY DOOR SYSTEM -SYSTEM TESTS
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777 AIRCRAFT MAINTENANCE MANUAL
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52-30-00
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CARGO DOORS -INTRODUCTION
Purpose
Cargo doors give access to the forward, aft, and bulk cargo compartments.
Location
The cargo doors are on the right side of the airplane.
General Description
The forward and aft cargo doors lets the crew load cargo on pallets and in containers.
The bulk cargo door lets the crew load smaller cargo that is not on pallets or in containers.
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777 AIRCRAFT MAINTENANCE MANUAL
CARGO DOORS -INTRODUCTION
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FORWARD LARGE CARGO DOOR SYSTEM -INTRODUCTION
Purpose
The forward large cargo door system gives access to the forward cargo compartment.
Location
The door is forward of the wing on the right side of the airplane.
General Description
The large cargo door provides a clear opening of 106 inches
(269.2 cm) wide and 67 inches (170.2 cm) high. The dimensions of the door lets cargo handlers load and unload pallets and containers.
The door is a non-plug type of door. Door latches hold the door closed against cabin pressure loads.
The door opens outward and upward. You can operate it electrically from inside or outside the cargo compartment. You can operate it manually from outside the cargo compartment.
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FORWARD LARGE CARGO DOOR SYSTEM -INTRODUCTION
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FORWARD LARGE CARGO DOOR SYSTEM -COMPONENT LOCATIONS -1
Components on the Outside of the Door
The lift manual drive sockets are on the upper, forward corner of the door.
The lock handle is on the lower half of the door, near the center. You can see the latch manual drive socket when you release the handle to the open position.
There are eight witness ports along the bottom edge of the door.
There are three sling attach points.
There are seven component access panels.
Training Information Point
Use the lock handle to lock and unlock the door. It connects to the lock mechanism on the inside of the door. Also, you enable electrical operation of the door when you release the lock handle.
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