27-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
22) SRM-R FAIL or ADC-C > SRM-R BUS FAIL 23) ADC-L > SRM-R DATA FAIL 24) SRM-R FAIL or ADC-L > SRM-R BUS FAIL 25) ADC-R > SRM-R DATA FAIL 26) SRM-R FAIL or ADC-R > SRM-R BUS FAIL 27) ADC DATA DISAGREE (SRM-R) 28) SRM-R CHANNEL CODE FAULT (SRM-R) 29) FCU-L FLAP SIGNAL > SRM-R INTERFACE FAIL 30) FCU-C FLAP SIGNAL > SRM-R INTERFACE FAIL 31) FCU-R FLAP SIGNAL > SRM-R INTERFACE FAIL 32) SECOND FCU FLAP INPUT FAIL (SRM-R)
F. Put the Airplane Back to Its Usual Condition
S 865-185
(1)
Set the GND TEST switch to the NORM position.
S 865-184
(2)
Remove electrical power if no longer required (Ref 24-22-00/201).
S 865-056
(3)
If the mechanical operational test was done, remove hydraulic power if no longer required (Ref 29-11-00/201).
TASK 27-11-00-715-179
3. Aileron Override Protection System Operational Check
____________________________________________________
A. Access
(1)
Location Zone
221, 222 Control Cabin
B.
Do an Operational Check of the Dual Control Path of the Aileron Override Protection System
(1)
Supply hydraulic power if not already provided. (AMM 29-11-00/201)
(2)
Manually hold the captain's control wheel in the neutral position.
S 715-177
(3)
Turn the first officer's wheel quickly clockwise and counterclockwise.
S 715-178
(4)
Make sure you can turn the first officer's wheel approximately 90 degrees in each direction.
S 865-068
S 715-176
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
C. Put the Airplane Back to Its Usual Condition
S 865-069
(1) Remove hydraulic power if no longer required. (AMM 29-11-00/201)
TASK 27-11-00-705-007
4. Aileron and Aileron Trim Control System Operational Test
________________________________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
29-11-00/201, Pressurize Main Hydraulic System
(3)
IPC 27-11-00 Fig. 1 and 5
(4)
SSM 27-11-01
(5)
WDM 27-11-11, 27-11-21
B.
Prepare for Test
S 865-058
(1)
Do this task to supply systems No. 1 and 4, or 2 and 3 hydraulic power: "Supply Hydraulic Power" (Ref 29-11-00/201).
S 865-009
(2)
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).
S 865-010
(3)
Make sure the FLT CONTROL HYD POWER - WING VALVE switches No. 1, 2, 3 and 4 on the P461 Pilot's Overhead Maintenance Panel are in the NORM position.
C.
Do a Test of the Aileron and Aileron Trim Control System Operation
S 715-012
(1)
Do a test of the aileron trim actuator operation:
(a)
Move the trim switches to LEFT WING DOWN and hold the switches until the movement of the control wheels stops. 1) Make sure the control wheels turn counterclockwise 44 to 50
degrees.
NOTE: When necessary get the aid of one more person for
____ the steps that follow.
2) Make sure the left inboard aileron moves up and the right inboard aileron moves down.
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