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EFFECTIVITY
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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DOORS - SERVICE - FORWARD ACCESS DOOR
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Location
The door is on the bottom of the fuselage, aft of the nose wheel
well.
General Description
The door is a plug-type door. It is a cast frame with aluminum
skins.
When the door opens, it slides upward and to the right. In the
fully open position it stows in the fuselage, to the right of the
door frame. You operate the door from outside the airplane.
The door has these parts:
* Door latch mechanism
* Door rollers
* Fuselage door roller tracks
* Door seal.
Door Latch Mechanism
A spring-loaded handle with a push-button release controls the
latch mechanism. The handle fairs with the fuselage skin until it
is released. The handle shaft turns a pinion gear in the door that
drives four rack gear latch pins. This causes the pins to engage
or disengage the latch pin fittings on the door frame. The latch
pins transmit the door pressure loads to the door frame.
The fittings have lugs that will transmit the pressure loads
safely even if the latch pins are unlatched.
Door Rollers and Fuselage Roller Tracks
The door has three sets of rollers that run in tracks attached to
fuselage structure. Together, the rollers and tracks control the
motion of the door as it slides open or closed.
Gravity detents in the tracks hold the door in place at the
partially open and the full open positions.
The inboard parts of the roller tracks fold to improve access to
the equipment racks. The tracks hinge near the right side of
door frame. A spring catch on the end of each track holds the
track in the folded or unfolded position.
Door Seal
A seal around the door prevents pressure loss.
Door Warning Switch
The door has an interface with the door warning system. It
shares the P5 panel EQUIP door warning light with the forward
equipment compartment door. The left latch pin operates the
door warning switch. The switch is outboard of the left latch pin
frame bushing.
DOORS - SERVICE - ELECTRONIC EQUIPMENT COMPARTMENT EXTERNAL ACCESS DOOR
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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When the door is latched, the latch pin pushes on the switch.
This opens the switch and removes a ground from the EQUIP
light and the light goes out.
When the door is unlatched, the latch pin releases the switch.
The switch closes to give a ground to the EQUIP light and the
light comes on.
DOORS - SERVICE - ELECTRONIC EQUIPMENT COMPARTMENT EXTERNAL ACCESS DOOR
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-020
DOORS - SERVICE - ELECTRONIC EQUIPMENT COMPARTMENT EXTERNAL ACCESS DOOR
DOORS - SERVICE - ELECTRONIC EQUIPMENT COMPARTMENT EXTERNAL ACCESS DOOR
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D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-020
Operation
You operate the electronic equipment compartment external
access door manually. You open and close the door from
outside of the airplane.
Open Door
The handle on the door fairs in a recess. A push-button trigger
releases the handle, and it comes out of fair by spring force.
Turn the handle counterclockwise to disengage the latch pins.
When the latch pins are free, you can push the door upward and
slightly to the right to the first detent. Then push the door to the
right to the fully open detent.
When the door is fully open, the roller tracks can be folded to
improve access to the equipment racks. A spring catch on the
end of each roller track holds the track in the folded or unfolded
position.
Close Door
Before you close the door, make sure the roller tracks are
extended and the door frame area is clear.
Pull the door out of the fully open detent and then restrain it as
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