(2)
Put a warning notice in position to tell persons not to operate the flight controls.
Subtask 27-51-00-010-060
B. Get Access
(1) Remove the applicable Position Pick-off Unit (PPU):
-
for the Asymmetry-Position Pick-Off Unit (APPU) (Ref. TASK 27-51-18-000-001)
-
for the Feed-Back Position Pick-Off Unit (FPPU) (Ref. TASK 27-51-19-000-001)
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-
for the Instrumentation Position Pick-Off Unit (IPPU) (Ref. TASK 27-55-11-000-001)
-
for the Asymmetry-Position Pick-Off Unit (APPU) (Ref. TASK 27-81-18-000-001)
-
for the Feed-Back Position Pick-Off Unit (FPPU) (Ref. TASK 27-81-19-000-001)
-
for the Instrumentation Position Pick-Off Unit (IPPU) (Ref. TASK 27-85-11-000-001).
4. Procedure
_________
(Ref. Fig. 501/TASK 27-51-00-991-003)
CAUTION : BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING
_______
EDGE:
-
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
-
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
-MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.
Subtask 27-51-00-820-050
A. Manual Adjustment of the Position Pick-Off Units
(1)
Unlock the locking plate of the drive shaft of the PPU.
(2)
Make sure that the drive shaft turns freely.
(3)
Turn the input shaft and align the drive gear zero mark and the orange zero indicator with the fixed pointers.
(4)
Make sure that the input shaft zero mark and the fixed zero mark are aligned.
NOTE : The mechanical zero position and the electrical zero position
____
are the same.
(5) If the PPU is not to be immediately installed:
(a)
Install a tie-wrap behind the locking plate.
(b)
Attach a label to the PPU to tell persons that the PPU is locked in the zero position.
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Position Pick-off Unit Figure 501/TASK 27-51-00-991-003
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5. Close-up
________
Subtask 27-51-00-410-058
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the applicable Position Pick-off Unit (PPU):
-
for the Asymmetry-Position Pick-Off Unit (APPU) (Ref. TASK 27-51-18-400-001)
-
for the Feed-Back Position Pick-Off Unit (FPPU) (Ref. TASK 27-51-19-400-001)
-
for the Instrumentation Position Pick-Off Unit (IPPU) (Ref. TASK 27-55-11-400-001)
-
for the Asymmetry-Position Pick-Off Unit (APPU) (Ref. TASK 27-81-18-400-001)
-
for the Feed-Back Position Pick-Off Unit (FPPU) (Ref. TASK 27-81-19-400-001)
-
for the Instrumentation Position Pick-Off Unit (IPPU) (Ref. TASK 27-85-11-400-001).
Subtask 27-51-00-942-076
B. Removal of Equipment
(1)
Remove the safety barriers.
(2)
Remove the warning notice(s).
(3)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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TASK 27-51-00-710-002
Operational Test of the Flap Interconnecting Strut and the Flap-Attachment Failure-Detection Sensors
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU_______ START A TASK ON OR NEAR: - THE FLIGHT CONTROLS - THE FLIGHT CONTROL SURFACES - THE LANDING GEAR AND THE RELATED DOORS - COMPONENTS THAT MOVE.
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