DOOR INDICATION AND CONTROL (CONT'D)
Baggage Door
Two proximity sensors monitor the door position and provide signals to the LGECU which in turn
provides the EICAS display.
Large Maintenance Doors
Two (optional third) separate large hinged and latched maintenance hatches, are monitored by the
LGECU. Each door is monitored by one proximity sensor to determine the door closed condition.
In each case, the proximity sensor is mounted on the airplane structure and monitors a sensor on
the hatch. The information is used by the LGECU for door position indication.
The LGECU combines the status of the aft equipment bay door with the status of the maintenance
hatches to produce a single EICAS indication.
The maintenance hatches that are monitored are:
•
Rear hydraulic system access door.
•
Refuel/defuel station door.
•
Optional belly fairing stowage access door.
Aft Equipment Bay Door
An electrical proximity sensor provides indication to the EICAS system when the door is properly
closed. The LGECU monitors the signals and provides the input to EICAS.
Small Service Doors
The LGECU monitors the signals and provides input to EICAS when any one of the access/small
service doors is not properly closed.
AIRPLANE GENERAL
Rev 12, Aug 14, 2006
Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
01−10−60
