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时间:2011-04-11 09:23来源:蓝天飞行翻译 作者:航空
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 (c)  
Put the BEACON switch on the P5 panel to LWR.

 (d)  
Make sure the light flashes.

 (e)  
Put the BEACON switch on the P5 panel to OFF.

 (f)  
Make sure the light is off.


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747-400 MAINTENANCE MANUAL
 (g)  Remove electrical power if it is not necessary (Ref 24-22-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
 LOWER ANTI-COLLISION LIGHT - REMOVAL/INSTALLATION
_________________________________________________
 1.  General________
 A. This procedure contains these tasks.
 (1)  
A task for the removal of the light.

 (2)  
A task for the installation of the light.


 TASK 33-44-03-004-001
 2.  Light Assembly Removal (Fig. 401)______________________
 A. References
 (1)  
6-09-03/201, Access Doors and Panels

 (2)  
IPC 33-44-03

 (3)  
SSM 33-44-01


 B. Access
 (1)  Location Zone
 100 Lower Half of Fuselage, Exterior

 C. Procedure
 S 864-050
 (1)  Open this circuit breaker and attach a DO-NOT-CLOSE tag:
 (a)  P6 Main Power Distribution Panel
 1) 6L31 ANTI COLL LTS - RED

 S 024-060
 (2)  Do these steps to remove the light assembly:
 (a)  Open the panel, 192HR, in the air conditioning bay (Ref 6-09-03/201) to get access to the top of the light.
 WARNING: DO NOT TOUCH THE LIGHT ASSEMBLY FOR 10 MINUTES AFTER YOU
_______ REMOVE POWER. AN ELECTRICAL SHOCK FROM THE HIGH VOLTAGE IN THE LIGHT CAN CAUSE INJURY TO PERSONS.
 (b) Remove the lockwire from the electrical connector.
 NOTE:____Identify the position of the electrical connector. When you replace the light, you must connect the electrical connector in the same position.
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A

747-400
MAINTENANCE MANUAL

ANTI-COLLISION LIGHT SEE B
SEE A
AIRPLANE SKIN 
(REF) 
A  FWD 
FASTENER 
(4 LOCATIONS) 

LENS FASTENER (5 LOCATIONS)  LENS ASSEMBLY  FWD 

Figure 401 Lower Anti-Collision Light Installation 

G47683
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747-400
MAINTENANCE MANUAL

 (c)  
Disconnect the electrical connector.

 (d)  
Remove the nut that hold the bonding jumper.

 (e)  
Remove the bonding jumper.

 (f)  
Remove the lens assembly retaining screws.

 (g)  
Remove the lens assembly.

 (h)  
Remove the light subassembly retaining screws.

 (i)  
Remove the light subassembly.


 TASK 33-44-03-404-013
 3. Installation (Lower Beacon Light) (Fig. 401)
_________________________________
 A. Parts ~.............................................................................. | AMM | | AIPC | ................. ...........................| | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ...............................................................................| | 401 | 1 | Light Assembly Mounting Fasteners | 33-44-03 | 02 | 190 | | | 2 | Light Assembly | | | 200 | | | 3 | Bonding Jumper | | | 185 | | | 4 | Electrical Cable | | | 195 | 2......…........…...................................…...........….....…........1
 
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