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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-11-00-016
AILERON AND AILERON TRIM CONTROL SYSTEM - COMPONENT LOCATIONS 2
AILERON AND AILERON TRIM CONTROL SYSTEM - COMPONENT LOCATIONS 2
EFFECTIVITY
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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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
27-11-00-016
Purpose
The flight crew uses two control wheels for roll control
operation.
Location
The aileron control wheels are on the top of the two elevator
control columns.
Physical Description
The aileron control wheels are similar to control wheels in other
Boeing airplanes. The outboard side of each wheel contains the
stabilizer trim switches and the autopilot disengage switches.
The aileron trim indicator placard is on the top of the control
wheel.
Functional Description
When the pilot turns the control wheel, the control cables move.
Mechanical stops in the aileron control wheel drum and aileron
transfer mechanism keep the control wheel movement to a limit
of 107.5 degrees left and right.
AILERON AND AILERON TRIM CONTROL SYSTEM - AILERON CONTROL WHEEL
EFFECTIVITY
GUN ALL 27-11-00
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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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
27-11-00-004
AILERON AND AILERON TRIM CONTROL SYSTEM - AILERON CONTROL WHEEL
AILERON AND AILERON TRIM CONTROL SYSTEM - AILERON CONTROL WHEEL
EFFECTIVITY
GUN ALL 27-11-00
Page 17
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-11-00-004
Purpose
The aileron control wheel drum assembly connects the two
control wheels and the left body cables.
Location
The aileron control wheel drum is below the captain’s control
column. You get access through the forward equipment
compartment door.
Physical Description
The aileron control wheel drum assembly has these
components:
* Bus drum
* Crank
* Roll control wheel steering (CWS) force transducer
* Control drum
* Control wheel stops.
The bus drum and crank are part of the shaft. The control drum
is bearing mounted. The roll CWS force transducer connects the
crank and the control drum. The control wheel stops are on the
control drum and airplane structure.
Functional Description
When the pilot turns the control wheel, the shaft turns the crank.
The crank movement goes through the roll CWS force
transducer to the control drum. Mechanical stops give
protection if the roll CWS force transducer connection has a
failure. The left body cables move when the control drum
moves. Control wheel stops on the control drum limit the control
drum and control wheel movement.
See the autoflight chapter for more information on the roll CWS
force transducer operation. (SECTION 22-11)
AILERON AND AILERON TRIM CONTROL SYSTEM - AILERON CONTROL WHEEL DRUM
EFFECTIVITY
GUN ALL 27-11-00
Page 18
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-11-00-005
AILERON AND AILERON TRIM CONTROL SYSTEM - AILERON CONTROL WHEEL DRUM
AILERON AND AILERON TRIM CONTROL SYSTEM - AILERON CONTROL WHEEL DRUM
EFFECTIVITY
GUN ALL 27-11-00
Page 19
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-11-00-005
Purpose
The aileron transfer mechanism supplies a load path for roll
control. In normal operation, the mechanism lets either pilot
make the roll control commands. If the control wheel cannot
move, the transfer mechanism lets the pilot operate the other
control wheel. If the cable or a connection breaks, you can use
the other control wheel.
Location
The aileron transfer mechanism is below the first officer’s
control column. You get access through the forward equipment
compartment door.
Physical Description
The aileron transfer mechanism has a torsion spring and a lost
motion device.
The torsion spring connects the aileron control bus drum to the
shaft of the right control wheel.
The lost motion device has a crank and two lugs. The crank
attaches to the shaft of the right control wheel. The two lugs are
part of the spoiler control drum.
Functional Description
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