(30)
 Install all the strut access and pressure relief doors (AMM 54-62-00/201).

 S 414-165

 (31)
 On outboard struts, install the outboard strut bracket assembly (Fig. 401).

 (32)
 On outboard struts, install the forward fairing no. 4.

 (33)
 Close the cover of the wing leading edge.

 S 414-102
 S 414-104
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A
747-400 MAINTENANCE MANUAL
 S 864-153
 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.
 WARNING:_______ YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
 LE FLAP SAFETY LOCK.  THE LE FLAPS CAN MOVE QUICKLY IF YOU DO
 NOT DO THE STEPS CORRECTLY.  THIS CAN CAUSE INJURY TO PERSONS

 OR DAMAGE TO EQUIPMENT.
 (34)
 Do this task:  "Safety Lock Removal and Leading Edge Flap Activation" (AMM 27-81-00/201).

 S 864-133

 (35)
 Do this task: "Leading Edge Flap Retraction" (AMM 27-81-00/201).

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747-400 MAINTENANCE MANUAL
 NACELLE STRUT - INSPECTION/CHECK
________________________________
 1.  General_______
 A.  This subject has two tasks. The first task is to examine the structure of the spring beam support. The second task is to do a check of the nacelle strut wear limits. The procedures to gain access to, and remove/ install the components, are referenced from this task.
 B.  To examine the structure of the spring beam support, it is necessary to do these steps:
 (1)  
The opening of the applicable access panels

 (2)  
The borescope inspection of the structural parts in the spring beam support for cracks

 (3)  
Ask Boeing for repair if cracks are found

 (4)  
Close the applicable access panels.

 C.  To do a check of the nacelle strut wear limits, it is necessary to do these steps:
 (1)  
Get access to the applicable components.

 (2)  
Remove and reinstall the applicable components as necessary.

 D.  For inspection of the strut when it overheats, refer to 5-51-32.
 TASK 54-51-01-206-001
 2.  Borescope Inspection of the Outboard Nacelle Strut (Fig. 601)__________________________________________________
 A.  Special Tools and Equipment
 (1)  The units that follow, can be used for borescope inspection (the equipment below is offered by Circon ACMI Div. of Circon Corp., 300 Stillwater Ave, P.O. Box 1971, Stamford, CT 06904-1971)
 (a)  
Light Source - High Intensity, Model LS-300

 (b)  
Flexible Borescope - 1 meter Superscope, Model F8AD10

 (c)  
Monitor - Color Videosystem, Model CVES-10, or B&W Videosystem, Model VES-10

 (d)  
Coupler - Video, Model CCTV-45

 B.  References
 (1)  
54-62-00/201, Nacelle Strut Access Panels

 (2)  
27-81-00/201, Leading Edge Flaps

 (3)  
IPC 54-51-01 Fig. 13

 C.  Access
 (1)  
Location Zone
 452 Nacelle Strut 1 - Torque Box
 482 Nacelle Strut 4 - Torque Box

 (2)  
Access Panel 454AL Left Trailing Edge Fairing Door - Nacelle Strut 1 454AR Right Trailing Edge Fairing Door - Nacelle Strut 1 521FT Wing Leading Edge Cover - Nacelle Strut 1 484AL Left Trailing Edge Fairing Door - Nacelle Strut 4 484AR Right Trailing Edge Fairing Door - Nacelle Strut 4 621FT Wing Leading Edge Cover - Nacelle Strut 4
　
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