DOOR WARNING SYSTEM -PASSENGER ENTRY DOOR SENSORS
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DOOR WARNING SYSTEM -PASSENGER ENTRY DOOR SENSORS
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777 AIRCRAFT MAINTENANCE MANUAL
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52-71-00
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BOEING PROPRIETARY -Copyright # -Unpublished Work -See title page for details.
DOOR WARNING SYSTEM -LARGE CARGO DOOR SENSORS
Location of Large Cargo Door Sensors
There are three proximity sensors on the large cargo door that supply information for door status indications along the bottom of the door. These are the large cargo door status sensors:
*
Closed sensor
*
Latched sensor
*
Locked sensor.
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DOOR WARNING SYSTEM -LARGE CARGO DOOR SENSORS
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DOOR WARNING SYSTEM -SMALL CARGO DOOR SENSORS
Purpose
Two of the sensors on the door are for indication.
Location
The door closed sensor is near the inboard side of the aft rotary actuator.
The door latched and locked sensor is near the forward latch crank.
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DOOR WARNING SYSTEM -SMALL CARGO DOOR SENSORS
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DOOR WARNING SYSTEM -BULK CARGO DOOR SWITCH
Location
The bulk cargo door closed, latched and locked switch is in the latch on the forward side of the door cutout.
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DOOR WARNING SYSTEM -BULK CARGO DOOR SWITCH
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DOOR WARNING SYSTEM -ACCESS DOOR SENSORS
Location of Forward Access Door Warning Sensors
The forward access door proximity sensor that supplies door status information is adjacent to the door latch in the cutout.
Location of Main Equipment Center (MEC) Access Door Warning Sensors
The electrical/electronics access door proximity sensor that supplies door status information is adjacent to the door latch in the cutout.
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777 AIRCRAFT MAINTENANCE MANUAL
DOOR WARNING SYSTEM -ACCESS DOOR SENSORS
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DOOR WARNING SYSTEM -FUNCTIONAL DESCRIPTION
Functional Description
These components give door status information to the PSEU:
*
A switch on the bulk cargo door
*
Proximity sensors on all of the other doors that go through the pressurized structure of the airplane.
The PSEU monitors information about door positions and about the sensors/switches used to monitor door positions. The PSEU sends the information to the AIMS through the left and right ARINC 629 buses.
AIMS shows the information on these displays:
*
EICAS
*
STATUS
*
DOOR SYNOPTIC
*
MAT.
The AIMS supplies passenger entry door information from the PSEU to the cabin services system (CSS). The CSS shows door LOCKED/NOT LOCKED information on the cabin door status screen.
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