S 432-036

 (5)  
Attach an applicable warning streamer to all the disconnected electrical connectors if the safety lock is not available.

 TASK 27-81-00-442-025
 11. Safety Locks Removal and Extended Leading Edge Flaps Activation_______________________________________________________________
 A. References
 (1)  
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04, SSM 27-81-05, SSM 27-81-06

 (2)  
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

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 27-81-00
 ALL  ú ú 01 Page 212 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 B. Access
 (1)  Location Zone 222 Control Cabin, RH 117 Electrical and Electronics Compartment - P414 Left
 Power Distribution Center 118 Electrical and Electronics Compartment - P415 Right
 Power Distribution Center
 512 Krueger Flap Inboard, LH
 523 Variable Camber Flap, LH
 525 Variable Camber Flap, LH
 535 Variable Camber Flap, LH
 612 Krueger Flap Inboard, RH
 623 Variable Camber Flap, RH
 625 Variable Camber Flap, RH
 635 Variable Camber Flap, RH

 C. Procedure
 S 082-028
 WARNING: DO NOT REMOVE THE SAFETY LOCKS WITH PNEUMATIC POWER APPLIED.
_______ THE FLAPS CAN RETRACT ACCIDENTALLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Remove the safety lock (receptacle and plug caps) from the
 disconnected electrical connectors.

 S 032-034

 (2)  
Remove the warning streamers, if they are installed.

 S 432-022

 (3)  
Connect the airplane system electrical plugs to the alternate and primary power receptacles on the PDU.

 S 862-067

 (4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6, Main Power Distribution Panel
 1) 6E3, PRI LE FLAP CONT GRP A AC
 2) 6E4, PRI LE FLAP CONT GRP A DC
 3) 6E5, PRI LE FLAP CONT GRP B AC
 4) 6E6, PRI LE FLAP CONT GRP B DC
 5) 6L21, LE FLAP ELEC CONT GRP B DRIVE 1
 6) 6L22, LE FLAP ELEC CONT GRP A DRIVE 2
 7) 6L23, LE FLAP ELEC CONT GRP A DRIVE 3
 8) 6L24, LE FLAP ELEC CONT GRP A DRIVE 4

 (b)  
P414, Left Power Distribution Center
 1) 414A5, LE FLAP ELEC DRIVE 1
 2) 414A2, LE FLAP ELEC DRIVE 4

 (c)  
P415, Right Power Distribution Center
 1) 415M35, LE FLAP ELEC DRIVE 2

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 ALL  ú ú 01 Page 213 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 2) 415B32, LE FLAP ELEC DRIVE 3
 TASK 27-81-00-862-001
 12. Leading Edge Flaps Extension with PDU Unserviceable (Alternate Drive Motor__________________________________________________________________________ Brake Serviceable)__________________
 A. General
 (1)  
This procedure is used if the PDU does not operate by pneumatic or electrical power, but the alternate electric motor brake does operate. In this procedure, all the leading edge flaps are extended but those with the unserviceable drive unit.

 B.
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 27-81-03/201, Flap Power Drive Unit and Installed Components

 (3)  
AIPC 27-81-03, Fig. 1

 (4)  
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04

 (5)  
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

 C.
Access

 (1)  
Location Zone
 512 Krueger Flap Inboard, LH
 523 Variable Camber Flap, LH
 525 Variable Camber Flap, LH
 535 Variable Camber Flap, LH
　
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