(c)
P414 Power Distribution Center - Left
1) 414A5 LE FLAP ELEC DRIVE 1
2) 414A2 LE FLAP ELEC DRIVE 4
(d)
P415 Power Distribution Center - Right
1) 415M35 LE FLAP ELEC DRIVE 2
2) 415B32 LE FLAP ELEC DRIVE 3
S 092-057
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT DO THE STEPS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5)
Do this task: "Safety Lock Removal and Leading Edge Flap Activation" (AMM 27-81-00/201).
(6)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
(7)
Do a check on the operation of the alternate electric motor:
S 862-058
S 712-059
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A
747-400
MAINTENANCE MANUAL
CAUTION: DO NOT ELECTRICALLY EXTEND OR RETRACT THE FLAPS MORE THAN
_______ ONE TIME IN 5 MINUTES. DAMAGE TO THE MOTOR CAN OCCUR IF THE MOTOR BECOMES TOO HOT.
(a)
Retract the flaps electrically: 1) Push the ALTN FLAPS ARM switch to put the flap system in
the alternate control. 2) Put the ALTN FLAPS EXT/RET switch to the RET position.
(b)
Make sure the LE flaps retract in 75-100 seconds after the inboard TE flaps retracted.
NOTE: The PDU will stop operation automatically.
____
(c)
To extend the LE flaps electrically, put the ALTN FLAPS EXT/RET switch in the EXT position.
(d)
Make sure the LE flaps extend approximately in 75-100 seconds.
NOTE: The indication system can help you find the operation
____
time.
(e) Make sure the PDU stop operation automatically.
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE
_______ LEADING EDGE FLAPS BEFORE YOU MOVE THE ALTN FLAPS ARM SWITCH. IF THE FLAP CONTROL LEVER MOVED DURING THE ALTERNATE OPERATION, THE LE FLAPS WILL MOVE AUTOMATICALLY WHEN THE ALTN FLAPS ARM SWITCH IS IN THE OFF POSITION. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(f)
Put the ALTN FLAPS EXT/RET switch to the OFF position.
(g)
Push the ALTN FLAPS ARM switch to put the system in the usual operation.
S 862-060
(8) Do this task if electrical power is not necessary : "Electrical Power Removal" (AMM 24-22-00/201).
TASK 27-81-03-002-061
6. Directional Control Servomotor Assembly Removal
_______________________________________________
A. Special Tools and Equipment
(1)
17MIT65B04017 Leading Edge Flap Drive Unit Lock
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 27-81-00/201, Leading Edge Flap System
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 36-00-00/201, Pneumatic System
(5)
AIPC 27-81-03, Fig. 1
(6)
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04, SSM 27-81-05, SSM 27-81-06
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A
747-400 MAINTENANCE MANUAL
(7)
WDM 27-51-21, WDM 27-51-22, WDM 27-81-11, WDM 27-81-12,
WDM 27-81-21, WDM 27-81-22, WDM 27-81-31, WDM 27-81-32,
WDM 27-81-41, WDM 27-81-42, WDM 27-81-81, WDM 27-81-82
C.
Access
(1) 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 7(108)
