(3)  
Funnel - long necked

 C. References
 (1)  
AMM 08-00-00/201, Leveling and Weighing

 (2)  
AMM 27-81-00/201, Leading Edge Flaps

 (3)  
AMM 51-31-01/201, Seals and Sealing

 (4)  
AMM 54-62-00/201, Nacelle Strut Access Panels

 (5)  
AMM 71-11-04/201, Fan Cowl Panels

 (6)  
AMM 71-11-06/201, Core Cowl Panels

 (7)  
AMM 78-31-00/201, Thrust Reverser System

 D. Access
 (1)  
Location Zone
 461 Nacelle Strut 2 - Forward Fairing
 462 Nacelle Strut 2 - Torque Box
 471 Nacelle Strut 3 - Forward Fairing
 472 Nacelle Strut 3 - Torque Box

 (2)  
Access Panel
 462AL Core Cowl to Strut Access Door - Engine 2
 462CL Upper Midspar Pressure Relief Access Door

 (Forward) - Engine 2 462EL Upper Midspar Pressure Relief Access Door - Engine 2
 (Aft) - Engine 2 472AL Core Cowl to Strut Access Door - Engine 3 472CL Upper Midspar Pressure Relief Access Door
 (Forward) - Engine 3 472EL Upper Midspar Pressure Relief Access Door - Engine 2
 E. Prepare for the Leak Check
 S 042-346
 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).

 (2)  
Open the left and right fan cowl panels (AMM 71-11-04/201).

 (3)  
Open the left and right core cowl panels (AMM 71-11-06/201).

 S 012-211
 S 012-347
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 012-212
 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 042-214
 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 012-215

 (6)  
Remove these access panels (AMM 54-62-00/201):

 (a)  
Access panel 462AL/472AL on the left side of the strut at NSTA 164.

 (b)  
Access panel 462EL/472EL on the left side of the strut at NSTA 217.

 (c)  
Access panel 462CL/472CL on the left side of the strut at NSTA 186.

 S 582-216
 (7)  Level the airplane to a minimum of one-half degree (AMM 08-00-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400
MAINTENANCE MANUAL

 S 162-217
 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.
 (8)  
Make sure you remove all unwanted materials (spilled sealant, fasteners, tie wires, etc.) from the midspar upper surface and the midspar forward drain inlet (NSTA 212).
　
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