(4)
Install the fairing as follows:
-Install the fasteners
-Connect the electrical connectors
-
Do a Test of the lights
-
Do a Test of the bonding resistance
-Apply sealant to the space between the skin(s)
B. The navigation lights are installed in the forward fairing wingtip. To repair the lights, you must remove the fairing.
TASK 57-23-01-004-001
2. Wingtip Forward Fairing Removal (Fig. 401)_______________________________
A. References
(1) IPC 57-23-01 Fig. 1
B. Access
(1)
Location Zone
538 Wingtip, Left
638 Wingtip, Right
(2)
Access Panel 538B Access Door - Navigation Light Fairing, Left 638B Access Door - Navigation Light Fairing, Right
C. Procedure
S 864-002
(1) For the left wing, open the 6L28 EXTERIOR LIGHT L WING CONT circuit breaker on panel P6.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
57-23-01
ALL ú ú 03 Page 401 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
MID FAIRING AFT OUTBOARD SECTION
Wingtip Forward Fairing Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
57-23-01
ALL ú ú 01 Page 402 ú Oct 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-003
(2)
For the right wing, the open 6L29 EXTERIOR LIGHT R WING circuit breaker on P6.
S 864-004
(3)
Open the 6L32 EXTERIOR LIGHT BEACON STROBE circuit breaker on panel P6.
S 014-005
(4)
Open the access panel 538B or 638B.
S 034-006
(5)
Disconnect the electrical connectors from the strobe and navigation lights.
S 024-007
(6)
Remove the external fasteners around the fairing perimeter and then remove the fairing.
S 034-008
(7)
Put a cover on the open area of the structure and the equipment.
TASK 57-23-01-404-009
3. Wingtip Forward Fairing Installation (Fig. 401)____________________________________
A. Consumable Materials
(1) A00247 Sealant - BMS 5-95
B. References
(1)
20-22-01/601, Electric Bonding
(2)
24-22-00/201, Manual Control
(3)
IPC 57-23-01 Fig. 1
C. Access
(1)
Location Zone
538 Wingtip, Left
638 Wingtip, Right
(2)
Access Panel 538B Access Door - Navigation Light Fairing, Left 638B Access Door - Navigation Light Fairing, Right
D. Procedure
S 144-010
(1)
Clean the drain/vent hole, if it is necessary.
(2)
If the hole has a cover, remove it.
S 424-012
(3)
Install the fairing.
S 434-011
(a) Put the fairing on the wing.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
57-23-01
ALL ú ú 03 Page 403 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b) Install the fasteners at all locations.
(4) S 434-013Connect the electrical connectors to the strobe and the navigation lights.
(5) S 414-014Close and lock the access panel 538B or 638B.
(6) S 864-015Close the 6L32 EXTERIOR LIGHT BEACON STROBE circuit breaker on panel P6.
(7) S 864-016For the left wing, close the 6L28 EXTERIOR LIGHT L WING CONT circuit breaker on the main power circuit breaker of panel P6.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 机翼 WINGS(34)
