(b)
Connect the electrical connector (1) to the transformer (2).
S 714-029
(2) Do a Test of the Transformer:
(a)
Supply electrical power (Ref 24-22-00/201).
(b)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
1) P6 Power Distribution Panel
a) 6L29 NAV LTS R WING
b) 6L28 NAV LTS L WING & CONT
(c)
Put the NAV switch on the P5 panel to the ON position.
(d)
Make sure that the navigation lights on the wingtips are on.
(e)
Put the NAV switch on the P5 panel to the OFF position.
F. Put the airplane back to its usual condition
S 094-015
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.
(1) Do this task: "Safety Lock Removal and Leading Edge Flap
Activation" (Ref 27-81-00/201).
S 864-023
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.
(2)
Do this task: "Leading Edge Flap Retraction" (Ref 27-81-00/201).
(3)
Remove the DO-NOT-OPERATE tag from the flap control.
(4)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
S 864-025
S 864-017
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WINGTIP NAVIGATION LIGHTS - MAINTENANCE PRACTICES
_________________________________________________
1. General
_______
A. This procedure contains these tasks:
(1)
A task for the removal of the navigation light lamp.
(2)
A task for the installation of the navigation light lamp.
(3)
A task for the replacement of the navigation light lens.
TASK 33-43-04-962-001
2. Wingtip Lamp Removal (Fig. 201)
____________________
A. References
(1)
24-22-00/201, Manual Control
(2)
SSM 33-43-10
B. Access
(1) Location Zone
538 Wingtip - Left
638 Wingtip - Right
C. Procedure
S 862-035
(1) Prepare for the removal:
(a) Open these circuit breakers and attach DO-NOT-CLOSE tags:
1) P6 Main Power Distribution Panel a) 6L29 NAV LTS WING-R b) 6L28 NAV LTS WING-L
WARNING: MAKE SURE THE STROBE LIGHTS ARE OFF WHEN YOU DO
_______ MAINTENANCE ON THE NAVIGATION LIGHTS. THE OPERATION OF THE STROBE LIGHT CAN CAUSE DAMAGE TO YOUR EYES.
(b)
Make sure that the STROBE switch on the P5 panel is in OFF.
(c)
Attach a DO-NOT-OPERATE tag to the STROBE switch.
S 012-036
(2) Do these steps to remove the light assembly:
(a) Open the access panel (1) below the light assembly (2).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
4. MOUNTING BOLT
1. ACCESS PANEL (3 LOCATIONS)
2. NAVIGATION
LIGHT ASSEMBLY
SEE A
11. WINGTIP 3. ELECTRICAL
LIGHT LENS CONNECTORS
INBD
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