(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 012-143
 S 012-344
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 S 012-144
 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 042-146
 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 012-147

 (6)  
Remove the upper wing leading edge cover 521FT/621FT.

 (7)  
Remove the dry bay access panels 452FL/482FL and 452GL/482GL.

 (8)  
Close and lock the aft fairing panels 454AL/484AL.

 S 582-150

 (9)  
Level the airplane to a minimum of one-half degree (AMM 08-00-00/201).

 S 012-148
 S 012-149
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 S 162-151
 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.
 (10) Make sure you remove all unwanted materials (spilled sealant, fasteners, tie wires, etc.) from the closure spar surfaces and the closure spar drain inlet.
 F. Do Leak Check S4 - Outboard (Figs. 201 and 202)
 S 792-152
 (1) 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).
 S 792-153
 (2)  With a funnel and hose, apply water to the closure spar surface as follows:
 (a)  
Use the upper wing leading edge cover (removed) for access.

 (b)  
Apply the water to the pneumatic duct boot seal and the system penetrations between the 251 strut to wing barrier and the NSTA 225 bulkhead.

 (c)  
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.
 1) Make sure that all surfaces receive the same amount of water. 2) Do not apply water to the strut to wing sponge seal.
 S 792-154
 (3)  Make sure there is no water leakage through the closure spar into the dry bay area.
 (a)  Leakage from the left and right dry bay drain tubes into the dry bay is not permitted.
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 (4)  S 792-155Make sure there is no leakage through the strut to wing vapor barrier wire bundle and tubing penetrations or through the strut to wing vapor barrier.
　
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