(2)
Access Panel
454AL Aft Fairing Door Panel - Engine 1
521FT Wing Leading Edge Cover - Engine 1
484AL Aft Fairing Door Panel - Engine 4
621FT Wing Leading Edge Cover - Engine 4
E. Prepare for the Leak Check
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
54-53-00
ALL ú ú 01N Page 208 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 042-335
WARNING: DO THE DEACTIVATION PROCEDURE TO PREVENT THE OPERATION OF THE
_______ THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1)
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).
S 012-066
(2)
Open the left and right fan cowl panels (AMM 71-11-04/201).
S 012-336
(3)
Open the left and right core cowl panels (AMM 71-11-06/201).
S 012-067
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(4) Open the left and right thrust reversers (AMM 78-31-00/201).
S 042-070
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 INSTALL
_______ THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5)
Do this task: "Extended Leading Edge Flaps Deactivation and Safety Locks Installation" (AMM 27-81-00/201).
S 582-071
(6)
Level the airplane to a minimum of one-half degree (AMM 08-00-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
54-53-00
ALL ú ú 01N Page 209 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 012-072
(7)
Open the upper wing leading edge cover 521FT/621FT.
S 012-073
(8)
Open the aft fairing panels 454AL/484AL (AMM 54-62-00/201).
S 162-074
CAUTION:_______MAKE SURE YOU KEEP THE STRUT AREA CLEAN. TOOLS, LOOSE AND UNWANTED MATERIALS IN THE STRUT COMPARTMENTS CAN BLOCK THE REMOVAL OF THE FLUIDS THROUGH THE STRUT DRAINS. IF YOU DO NOT REMOVE THE UNWANTED MATERIALS, YOU CAN CAUSE DAMAGE TO THE STRUT.
(9)
Make sure you remove all unwanted materials (spilled sealant, fasteners, tie wires, etc.) from the upper spar surfaces and the upper spar forward drain inlet (NSTA 212).
S 162-095
(10)
Make sure you remove all unwanted materials (spilled sealant, fasteners, tie wires, etc.) from the aft bulkhead and aft fairing panels.
S 042-097
(11)
Close and latch the aft fairing panels (AMM 54-62-00/201).
F. Aft Tube Leak Test T2 - Outboard (Figs. 201 and 202)
S 792-076
(1) Apply water to the upper spar surface as follows:
(a) Put an empty container below the outlet end of the strut aft drain.
NOTE: The drain outlet is located on the aft edge of the lower
____ pan assembly on the right aft fairing panel (approximately NSTA 331).
(b) With a funnel and hose, apply water to the top surface of the upper spar (forward of NSTA 225). 1) Let the water enter both the upper spar drain inlets. 2) Apply 254 to 258 fluid ounces (7510 to 7630 ml) of water,
in 3.5 to 4.5 minutes.
NOTE: This is approximately 64 fluid ounces (1/2 gallon or
____ 1900 ml) per minute for 4 minutes.
S 792-077
(2) Make sure there are no leaks as follows:
中國(guó)航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) NACELLES/PYLONS(56)
