53-50-00
ALL ú ú 01 Page 3 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WING-TO-BODY FAIRINGS - DESCRIPTION AND OPERATION
_________________________________________________
1. General (Fig. 1)_______
A. Wing-to-body fairings extend from fuselage station 750 aft to station 1700. In the overwing area forward of the wing front spar, they are attached to the wing surfaces and the fuselage skin. In the overwing area aft of the front spar, the fairing is attached to the fuselage only. The faying surface between the airplane structure and the fairing is coated with a teflon-filled paint that acts as a rubstrip. Under the wing, they are attached to structure supported from the wing lower surface. They provide an aerodynamically smooth surface in the wing-to-fuselage join area.
B. Construction is of fiberglass sandwich with reinforced nomex honeycomb core. The exterior surface of the panels below the wing surfaces are flame-sprayed aluminum then painted with enamel. The panels above the wing have a conductive coating beneath the enamel.
C. All fairings are readily removable. Attachment is by countersunk screws with dimpled washers in the periphery of the panel (Section A-A). Doors in the lower fairing allow access for air conditioning systems and potable water. Anti-collision lights and antennas are housed in or supported by the fairings.
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53-51-00
ALL ú ú 01 Page 1 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
STA
STA 750
1700
STA
STA
1000
880
EXAMPLE FAIRING ATTACHMENT
A-A
Wing-to-Body Fairings Figure 1
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53-51-00
ALL ú ú 01 Page 2 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WING-TO-BODY FAIRING - REMOVAL/INSTALLATION
___________________________________________
1. General_______
A. This procedure has these tasks:
(1)
Lower Half Wing-to-Body Fairing Removal.
(2)
Upper Half Wing-to-Body Fairing Removal.
(3)
Lower Half Wing-to-Body Fairing Installation.
(4)
Upper Half Wing-to-Body Fairing Installation.
TASK 53-51-01-004-001
2. Wing-to-Body Fairing Removal - Lower Half (Fig. 401)_________________________________________
A. General
(1) The wing-to-body fairing will be referred to as the fairing in this task.
B. References
(1)
IPC 53-51-01 Fig. 1 (Section 42)
(2)
IPC 53-51-01 Fig. 1 (Section 46)
C. Access
(1) Location Zone 191 Fairing - Wing-to-Body, Forward, Lower Half, Left 192 Fairing - Wing-to-Body, Forward, Lower Half, Right 193 Fairing - Wing-to-Body, Aft, Lower Half, Left 194 Fairing - Wing-to-Body, Aft, Lower Half, Right
D. Procedure
S 034-002
(1) If it is necessary, remove or disconnect the equipment that is attached to the fairing.
(a) Refer to the applicable chapter for the instructions to remove or disconnect the equipment.
S 024-003
(2) Remove the fairing:
(a) Remove the fasteners which attach the fairing to the structure.
NOTE: Different types of fasteners are used to hold the
____ fairing panels. Stainless steel bolts and dimpled washers are used to hold the fairing panel and also to provide electrical bonding. Make sure you install these fasteners in the same locations when repair and maintenance is completed.
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53-51-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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