C. Prepare to Operate the Airplane
 NOTE: When you do the procedures to prepare the airplane for operation
____ do a check for corrosion. Refer all large corrosion problems to the correct authority. Use approved procedures to clean small corrosion problems.
 S 212-147
 (1)  
Do the procedures to prepare the airplane for operation only on items which were prepared for parking.

 S 212-243

 (2)  
Do a visual inspection for possible indications of deterioration of the items not prepared for parking.

 (3)  
Close all of the circuit breakers.

 (4)
Extend all of the flaps (AMM 27-51-00/201 and AMM 27-81-00/201).

 S 862-148
 S 862-149
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747-400 MAINTENANCE MANUAL
 (5)  S 642-150Lubricate all of the flaps (Trailing Edge AMM 12-21-20/301, Leading Edge AMM 12-21-23/301 and Stabilizer Trim AMM 12-21-19/301) components.
 (6)  S 092-151Remove the wheel chocks and covers from all of the wheels.
 (7)  S 092-152Remove the shock strut restraints.
 (8)  S 862-153Jack the airplane (AMM 07-11-01/201).
 (9)  S 022-154Remove the wheels (AMM 32-45-01/401 or AMM 32-45-02/401).
 S 642-155

 (10)
 Apply grease to the wheel bearings with Aeroshell 22 or Mobil 28 (AMM 32-45-01/401 or AMM 32-45-02/401).

 S 022-156

 (11)
 Install the wheel (AMM 32-45-01/401 or AMM 32-45-02/401).

 S 862-157

 (12)
 Lower the airplane and remove the jacks (AMM 07-11-01/201).

 S 862-021

 (13)
 Install the main and nose landing gear ground locks (AMM 09-11-00/201).

 S 862-015

 (14)
 Make sure the main and nose landing gear doors are closed and the ground door release handle is in the door closed position.

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747-400 MAINTENANCE MANUAL
 S 862-010
 (15)
 Make sure that all of the landing gear alternate extension switches on the pilots instrument panel P2-3 are in the OFF position.

 S 862-011

 (16)
 Make sure all personnel and equipment are clear of the landing gear doors.

 S 862-012

 (17)
 Provide electrical power (AMM 24-22-00/201).

 S 862-022

 (18)
 Remove pressure from the hydraulic systems number 1 and 4 (AMM 29-11-00/201).

 S 722-014

 (19)
 Test the alternate wing and body gear door release.

 (a)  Put the landing gear control handle in the OFF position.
 WARNING: MAKE SURE THAT ALL PERSONNEL ARE CLEAR OF THE LANDING GEAR
_______ DOORS. THE RAPID MOVEMENT OF THE DOORS CAN INJURE PERSONS OR CAUSE DAMAGE TO EQUIPMENT.
 (b)  Push the left and right wing and body gear alternate extension switches on the pilots P2-3 panel to the EXTEND position.
 NOTE: Hold the switches for three to five seconds and return
____ the switch to the ARM position for a minimum of 90 seconds.
 (c)  
Make sure that all main gear doors unlock and fall open.

 (d)  
Return the left and right wing and body gear alternate extension switches on the pilots P2-3 panel to the OFF position.

 (e)  
Position the left and right ground door release handles in the down and locked position.

 S 722-015
 (20) Test the nose gear alternate door release.
 (a)  Make sure that all personnel and equipment are clear of the nose gear doors.
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