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AIR/GROUND SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
GUN ALL 32-09-00
Page 4
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-09-00-001
AIR/GROUND SYSTEM - GENERAL DESCRIPTION
AIR/GROUND SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
GUN ALL 32-09-00
Page 5
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-09-00-001
Purpose
Two main landing gear compressed sensors on each main
landing gear supply main landing gear shock strut compressed
position signals to the air/ground system.
Physical Description
The landing gear compressed sensors are inductance type
sensors. Each sensor has a metal target and a sensor.
Location
The main landing gear compressed sensors are on the lower
area of the outer cylinder of the main landing gear. The targets
are on each side of the upper torsion link where the link
attaches to the outer cylinder of the main landing gear.
The sensor identification placards on the sensor bracket show
the sensor number. These are the main landing gear
compressed sensor numbers:
Sensor Number MLG Location
S1010 Right Outboard
S1011 Right Inboard
S1012 Left Outboard
S1013 Left Inboard
Junction boxes, one above each sensor, contain the sensor
wire connections.
Functional Description
The targets are near the sensors when the main landing gear
shock strut compresses and the airplane is on the ground. This
sends signals to the air/ground systems in the proximity switch
electronic unit (PSEU). The PSEU detects the change in sensor
inductance and considers the sensor status as target near. If the
target is outside the sensing range, the status of the sensor is
set to target far.
If the PSEU detects a failed sensor, the sensor status is set to
target far.
AIR/GROUND SYSTEM - MAIN LANDING GEAR COMPRESSED SENSORS
EFFECTIVITY
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Page 6
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-09-00-002
AIR/GROUND SYSTEM - MAIN LANDING GEAR COMPRESSED SENSORS
AIR/GROUND SYSTEM - MAIN LANDING GEAR COMPRESSED SENSORS
EFFECTIVITY
GUN ALL 32-09-00
Page 7
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-09-00-002
Purpose
Two nose landing gear compressed sensors supply nose
landing gear shock strut compressed position signals to the air/
ground system.
Physical Description
The landing gear compressed sensors are inductance type
sensors. Each sensor has a metal target and a sensor.
Location
The nose landing gear compressed sensors are on each side of
the upper torsion link where the link attaches to the outer
cylinder of the nose landing gear. The targets are on the lower
area of the outer cylinder of the nose landing gear.
The sensor identification placards on the sensor bracket show
the sensor number. These are the NLG compressed sensor
numbers:
Sensor Number Location
S1014 Left
S1015 Right
A junction box on the left wall of the nose landing gear wheel
well contains the wire connections for both compressed
sensors.
Functional Description
The targets are near the sensors when the nose landing gear
shock strut compresses and the airplane is on the ground. This
sends signals to the air/ground systems in the proximity switch
electronics unit (PSEU) when the nose landing gear is on the
ground. The PSEU detects the change in sensor inductance and
sets the sensor status as target near. If the target is outside the
sensing range, the status of the sensor is set to target far.
If the PSEU detects a failed sensor, the sensor status is set to
target far.
AIR/GROUND SYSTEM - NOSE LANDING GEAR COMPRESSED SENSORS
EFFECTIVITY
GUN ALL 32-09-00
Page 8
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-09-00-003
AIR/GROUND SYSTEM - NOSE LANDING GEAR COMPRESSED SENSORS
AIR/GROUND SYSTEM - NOSE LANDING GEAR COMPRESSED SENSORS
EFFECTIVITY
GUN ALL 32-09-00
Page 9
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
　
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