B.  
References

 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AIPC 27-51-26, Fig. 1 (Flap Tracks No. 3 and 6)

 (3)  
AIPC 27-51-11, Fig. 2 (Flap Tracks No. 4 and 5)

 (4)  
AIPC 27-51-26, Fig. 2 (Fixed Fairings)

 C.  
Access

 (1)  
Location Zone 563 Outboard Flap Track Fairing, Inboard Flap, LH, (Track No. 3) 561 Inboard Flap Track Fairing, Inboard Flap, LH, (Track No. 4) 661 Inboard Flap Track Fairing, Inboard Flap, RH, (Track No. 5)

 663  Outboard Flap Track Fairing, Inboard Flap, RH, (Track No. 6)
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-26
 ALL  ú ú 01 Page 401 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
Access Panel

 (a)  
On the left side of the airplane: 563BB Outboard Flap Track Fairing, Inbd Flaps 563CB Movable Flap Track Fairing, Inbd Flaps 563DB Movable Flap Track Fairing, Inbd Flaps 563EB Movable Flap Track Fairing, Inbd Flaps 561AB Inboard Flap Track Fairing, Inbd Flaps 561BB Movable Flap Track Fairing, Inbd Flaps 561CB Movable Flap Track Fairing, Inbd Flaps 561DB Movable Flap Track Fairing, Inbd Flaps

 (b)  
On the right side of the airplane: 663BB Outboard Flap Track Fairing, Inbd Flaps 663CB Movable Flap Track Fairing, Inbd Flaps 663DB Movable Flap Track Fairing, Inbd Flaps 663EB Movable Flap Track Fairing, Inbd Flaps 661AB Inboard Flap Track Fairing, Inbd Flaps 661BB Movable Flap Track Fairing, Inbd Flaps 661CB Movable Flap Track Fairing, Inbd Flaps 661DB Movable Flap Track Fairing, Inbd Flaps

 D.
Prepare for the Removal

 S 864-002
 (1)  Pressurize hydraulic system No. 1 (AMM 29-11-00/201).
 S 864-032
 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.
 (2)  
Put the flap control lever in the 30-unit detent to extend the inboard flaps.

 (3)
Release the pressure in hydraulic system No. 1 (Ref 29-11-00/201).

 S 414-005

 (4)  
Remove the access panels as necessary:

 S 864-004
 -563BB, 563CB, 563DB and 563EB from track No. 3
 -561AB, 561BB, 561CB and 561DB from track No. 4
 -661AB, 661BB, 661CB and 661DB from track No. 5
 -663BB, 663CB, 663DB and 663EB from track No. 6.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-26
 ALL  ú ú 01 Page 402 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 E. Remove An Inboard Flap Track Fairing
 S 024-006
 (1)  Remove the fixed fairing (1) (Fig. 403).
 NOTE: Access to the movable fairing hinge bolts is better with
____
 the fixed fairing removed.

 (a)  
Remove the bonding jumper (4).

 (b)  
On fairings 4 and 5, remove the nut which attaches the lube fitting to the fixed fairing.

 (c)  
Remove the retainer (3) from the forward attach points.

 NOTE: There are two retainers on fixed fairings No. 3 and 6
____ and one retainer on fixed fairing No. 4 or 5.
 (d)  Remove the tiebolts (2) from the fixed fairing.
 NOTE: There are two tiebolts on fixed fairings No. 3 and 6 and
____ one tiebolt on fixed fairings No. 4 or 5.
 (e)  
Remove the bolts (6) from three adjustable rods (5) at the aft end of the fixed fairing.

 (f)  
Lower the fixed fairing from the airplane.

 (g)  
Remove the bushings (7) from the attach fittings on the adjustable rods.

 S 494-007
 (2)  Attach a bootstrap clamp to the flap track (Fig. 402).
 NOTE: Follow the instructions with the bootstrap clamp to install
____
 it.

 S 494-008
　
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