(2)  
Installing access doors consists of securing door to strut using screwdriver, adjusting door if necessary, and removing leading edge flaps, if installed.

 (3)  
Opening trailing edge fairing doors consist of releasing all latches, rotating door outward, and engaging support rod.

 (4)  
Closing trailing edge fairing doors consist of releasing support rod, rotating door inward, securing all latches, and adjusting door flushness, if necessary.

 TASK 54-62-00-002-001
 2.  Remove the Access Door (Fig. 201)______________________
 A.  References
 (1)  
AMM 27-81-00/201, Leading Edge Flaps

 (2)  
IPC 54-62-02 Fig. 1 and 4

 B.  Access
 (1)  Location Zone
 452 Nacelle Strut 1 - Torque Box
 462 Nacelle Strut 2 - Torque Box
 472 Nacelle Strut 3 - Torque Box
 482 Nacelle Strut 4 - Torque Box

 C.  Procedure
 S 492-002
 WARNING:_______LEADING EDGE FLAPS ARE FAST ACTING. LOCKS MUST BE INSTALLED TO PREVENT POSSIBLE INJURY DUE TO INADVERTENT OPERATION OF FLAPS.
 MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE LE FLAPS, TE FLAPS, AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, ELECTRICAL POWER WILL CAUSE THE FLAPS TO MOVE AUTOMATICALLY WHEN YOU MOVE THE FLAP CONTROL LEVER. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Make sure the leading edge flaps are retracted and the leading edge flap drive unit lock is installed (AMM 27-81-00/201).

 S 032-004

 (2)  
For access/pressure relief doors with pressure relief latches, insert screwdriver into latch handle slots and rotate screwdriver 90 degrees away from door to release latches.

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 54-62-00
 ALL  ú ú 02 Page 201 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
WING

NOTE: INBOARD STRUT SHOWN OUTBOARD STRUT SIMILAR
FAIRING DOOR
LATCH
(SHOWN CLOSED)

SKIN
OVER-CENTER LINKAGE LATCH

A-A
ACCESS/PRESSURE RELIEF DOOR
A
STRUT

ROTARY NUT

STRUT  ACCESS 
SKIN  DOOR 
ROTARY 

B  NUT LATCH 
A  B-B 
Access Doors - Opening and Closing 
Figure 201 

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 54-62-00
 ALL  ú ú 02 Page 202 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 032-005
 (3)  
For access doors with rotary nut latches, turn each latch screw 1/4 turn using phillips screwdriver, and remove door. Check latches for damaged flanges; replace latch if damaged.

 S 022-006

 (4)  
Remove door from access opening.

 TASK 54-62-00-402-007
 3.  Install the Access Door (Fig. 201)_______________________
 A. References
 (1)  
AMM 27-81-00/201, Leading Edge Flaps

 (2)  
AMM 54-62-02/501, Nacelle Strut Access Doors

 (3)  
IPC 54-62-02 Fig. 1 and 4

 B. Access
 (1)  Location Zone
 452 Nacelle Strut 1 - Torque Box
 462 Nacelle Strut 2 - Torque Box
 472 Nacelle Strut 3 - Torque Box
 482 Nacelle Strut 4 - Torque Box

 C. Procedure
 S 492-008
 WARNING:_______LEADING EDGE FLAPS ARE FAST ACTING. LOCKS MUST BE INSTALLED TO PREVENT POSSIBLE INJURY DUE TO INADVERTENT OPERATION OF FLAPS.
 MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE LE FLAPS, TE FLAPS, AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, ELECTRICAL POWER WILL CAUSE THE FLAPS TO MOVE AUTOMATICALLY WHEN YOU MOVE THE FLAP CONTROL LEVER. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Make sure the leading edge flaps are retracted and the leading edge flap drive unit lock is installed (AMM 27-81-00/201).
　
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