(6)  
AMM 54-62-00/201, Nacelle Strut Access Panels

 (7)  
AMM 54-62-02/501, Nacelle Strut Access Doors

 (8)  
AMM 54-62-03/501, Trailing Edge Fairing Doors

 D.
Access

 (1)  
Location Zones
 474 System 3 - Strut Aft Fairing
 745 Wing Landing Gear Wheel Well

 (2)  
Access Panel
 474AL Trailing Edge Fairing Doors

 E.
Procedure

 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 866-139
 S 496-140
 WARNING: REFER TO AMM 32-00-30/201 FOR THE INSTALLATION PROCEDURE FOR
_______ LOCKS ON THE LANDING GEAR DOORS. SUDDEN MOVEMENT OF THE DOORS CAN CAUSE INJURY AND DAMAGE.
 (2)  
Make sure that the locks for the landing gear doors and the landing gears are installed (AMM 32-00-30/201).

 S 866-444

 (3)  
Make sure that the person in the flight compartment deck can speak with the person on the ground.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 016-487
 (4)  
Open the doors in the trailing edge fairing for engine No. 3 (AMM 54-62-00/201).

 S 486-142

 (5)  
If a hydraulic service cart is used as the pressure source, connect the hydraulic service cart (AMM 29-11-00/201):

 (a)  
Connect the cart to the ground-service disconnect on the pressure module of the No. 3 hydraulic system.

 (b)  
Install a flowmeter in the cart pressure line which connects to the No. 3 hydraulic system.

 (c)  
Connect the return line on the hydraulic service cart to the No. 3 return module.

 S 486-143
 (6)  
If the system demand pump is used as a pressure source , release the pressure in hydraulic system No. 3 (AMM 29-11-00/201):

 (a)  
Install a flowmeter in the pressure line of the No. 3 demand pump between the pump and the ground service disconnect on the pressure module.

 (b)  
Make sure there is a minimum of 5400 pounds (2450 kg) of fuel in the No. 3 main fuel tank.

 NOTE: The fuel weight values are calculated with a fuel
____
 density of 6.7 pounds per gallon.

 S 866-488
 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.
 (7)  
Make sure that the inboard and outboard trailing edge flaps are fully retracted.

 S 866-489

 (8)  
Make sure the flap control handle is in the "0" detent.

 (a)  
If it is necessary, do this task: "Trailing Edge Flaps Retraction with Electrical Power" (AMM 27-51-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 866-146
 (9)  
Put the system No. 3 STAB TRIM switch on the control stand in the ON position.

 S 866-147

 (10)
 Put the UPPER YAW DAMPER switch on the P5 overhead panel in the INOP position.

 S 866-148

 (11)
 Put the A/P ENGAGE switches (L, C, and R) on the control panel for the AFCS mode in the off position.

 S 866-149

 (12)
 Put the system No. 3 WING FLT CONTROL SHUTOFF switch on the P461 overhead maintenance panel in the ON position.

 S 866-150

 (13)
 Put the system No. 3 TAIL FLT CONTROL SHUTOFF switch on the P461 overhead maintenance panel in the ON position.

 S 866-151

 (14)
 Make sure that the handle for the landing gear selector on the P2 first officer's panel is in the OFF position.
　
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