33-44-06
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEE A
ELECTRICAL POWER SUPPLY
CONNECTORS (2 PLACES)
MOUNTING BOLTS (4 PLACES)
FWD INBD
A
Wingtip White Anti-Collision Light Power Supply Installation
Figure 401
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747-400 MAINTENANCE MANUAL
(d) Put a DO-NOT-OPERATE tag on the flap control lever.
WARNING: DO NOT TOUCH THE POWER SUPPLY FOR 10 MINUTES AFTER YOU
_______ REMOVE POWER. AN ELECTRICAL SHOCK FROM THE HIGH VOLTAGE IN THE POWER SUPPLY CAN CAUSE INJURY TO PERSONS.
(e) Open this circuit breaker and attach a DO-NOT-CLOSE tag:
1) P6 Main Power Distribution Panel
a) 6L32 ANTI COLL LTS WHITE
S 024-024
(2) Do these steps to remove the power supply:
(a)
Disconnect the electrical connectors.
(b)
Remove the mounting bolts.
(c)
Remove the power supply.
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.
(d) Do this task: "Safety Lock Removal and Leading Edge Flap Activation" (Ref 27-81-00/201).
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE
_______ AND TE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(e)
Do this task: "Leading Edge Flap Retraction"
(Ref 27-81-00/201).
(f)
Remove the DO-NOT-OPERATE tag from the flap control lever.
(g)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
1) P6 Main Power Distribution Panel
a) 6L32 ANTI COLL LTS WHITE
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747-400 MAINTENANCE MANUAL
(h) Remove electrical power if it is not necessary (Ref 24-22-00/201).
TASK 33-44-06-404-007
3. Installation (Wintip Strobe Light Power Supply) (Fig. 401)_______________________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
27-81-00/201, Leading Edge Flap System
(3)
SSM 33-44-02
B. Access
(1) Location Zone
538 Wingtip - Left
637 Wingtip - Right
C. Procedure
S 864-030
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