(12)
 Apply protective coating MIL-C-16173, grade 2 on to all unpainted landing gear parts which are open to the outside air.

 S 372-210

 (13)
 Apply protective coating MIL-C-16173, grade 2 again if it is necessary after you wash the airplane.

 S 862-068

 (14)
 Operate the landing gear doors until you complete three full movements of travel.

 (15)
 Put the doors in the closed position when the airplane is parked.

 S 622-069

 (16)
 Install tire covers which are not transparent to keep weathering to a minimum.

 S 862-211
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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N.
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747-400 MAINTENANCE MANUAL
 S 612-070
 (17)
 If the shock strut is serviced with MIL-H-5606, drain the shock strut and fill with MIL-H-6083 (AMM 12-15-03/301, AMM 12-15-04/301, and AMM 12-15-05/301).

 S 862-212

 (18)
 If you move the airplane when it is parked for more than 7 days, inflate the shock strut (AMM 12-15-03/301, AMM 12-15-04/301 and (AMM 12-15-05/301).

 NOTE: It is not necessary to drain the shock struts serviced
____
 with BMS 3-11.

Oxygen System Deactivation (Storage Up to 60 Days)
 S 282-071
 (1)  Make sure the portable and system oxygen bottles are not due for
 hydro-static test when the airplanes is parked.Water and Waste Deactivation
 S 682-076
 (1)  
Drain the water system (AMM 12-14-01/301).

 S 672-077

 (2)  
Disinfect the potable water system (AMM 38-10-00/201).

 S 172-078

 (3)  
Drain and flush all of the toilet tanks (AMM 12-17-01/301).

 S 202-213

 (4)
Make sure all of the tanks are empty (AMM 12-17-01/301).Power Plant and APU Deactiviation

 S 622-079

 (1)  
Refer to AMM 71-00-03/201 for engine storage requirements.

 S 622-080

 (2)
Refer to AMM 49-11-00/201 for APU storage requirements.Side Cargo Door Deactivation

 S 642-081

 (1)  
Lubricate all of the mechanism and the external hinge (AMM 12-21-04/301).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 622-082
 (2)  
Add a layer of MIL-G-23827 grease to the main cam latches, the middle span-cam latches, and the pull-in hooks.

 S 642-083

 (3)  
Add BMS 3-23 to the doorsill and body sill areas but do not include the seal and the seal depressors.

 TASK 10-11-02-582-214
 3. Prepare to Park the Airplane for More Than 30 Days
__________________________________________________
 A. Electrical/Electronic Systems Deactiviation (Storage over 30 Days)
 NOTE: Do not remove the batteries in the emergency radio beacons
____
 in slide/raft covers and life rafts.

 S 022-010
 (1)  
Remove the APU battery (AMM 24-31-06/401).

 S 022-011

 (2)  
Remove the megaphone battery (AMM 25-63-02/201).

 S 022-012

 (3)  
Remove the emergency light batteries (AMM 33-51-07/201).

 S 022-013

 (4)  
Remove the batteries from the power supply module for the emergency lights (AMM 33-51-04/201).

 S 022-014

 (5)  
Remove the batteries from the light modules at the main entry doors 1, 2, 4, and 5 (if applicable) (AMM 33-51-06/401).

 S 022-015

 (6)  
Remove the rack-mounted electronic packages from the E1, E2, E30, and E31 recks in the Main Equipment Center. Remove rack-mounted electronic packages from the E6 and E9 racks in the Center Equipment Center, and from the E8 rack in the Aft Equipment Center. For the 747-400 Freighter only, remove rack-mounted electronic packages from the E5 rack. Only the 747-400 Freighter has an E5 rack.
　
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