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A
747-400 MAINTENANCE MANUAL
 S 842-033
 (4)  Remove the "STATIC PORTS COVERED" tag from the left control wheel in the flight deck.
 S 682-035
 WARNING: IF YOU CAN DRAIN THE FUEL FROM THE DRAIN VALVE AFTER YOU
_______ APPLIED HOT AIR TO THE EXTERIOR FOR 3 TO 5 MINUTES, DO NOT THINK THAT ALL THE ICE HAS MELTED. THE ICE ADJACENT TO THE DRAIN VALVE UNIT CAN MELT AND LET SOME WATER AND FUEL FLOW FROM THE DRAIN. BUT, A PIECE OF ICE CAN STAY BEHIND. IF THE FUEL DOES NOT FLOW FROM THE DRAIN VALVE, CONTINUE TO APPLY HOT AIR FOR A SHORT TIME, AND FREQUENTLY DO A CHECK OF THE FLOW FROM THE DRAIN VALVE. CATCH THE FUEL IN A CONTAINER AMD MAKE SURE ALL OF THE WATER IS REMOVED.
 THE HEAT APPLIED TO THE SUMP DRAIN VALVES FOR THE OUTBOARD MAIN AND RESERVE TANKS WILL NOT REMOVE THE ICE WHICH HAS COLLECTED IN THE TANK SUMP OR IN THE DRAIN LINE BETWEEN THE TANK SUMP AND VALVE. TO REMOVE THIS ICE, YOU MUST PUT THE AIRPLANE IN A WARM HANGAR FOR SUFFICIENT TIME TO MELT THE ICE. THEN DRAIN THE SUMPS UNTIL THE WATER IS REMOVED.
 (5)  
In cold weather it is necessary to drain the fuel tank sumps prior to refueling to remove water from the fuel tanks if the airplane has been idle for more than 45 minutes prior to refueling. Drain the fuel tank sumps again after refueling if the airplane has been idle for 2 hours or more after refueling, prior to departure (AMM 12-11-03/301). In cold weather water can freeze, and not let the drain valves open.

 S 632-037

 (6)  
If the potable water system is empty, do these steps:

 (a)  
If it is necessary, disinfect the postable water system (AMM 38-10-00/201).

 (b)  
Fill the potable water system (AMM 12-14-01/301).

 

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 10-11-01
 ALL  ú ú 03 Page 213 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 PARKING (PROLONGED) - MAINTENANCE PRACTICES
___________________________________________
 1.  General_______
 A.  This procedure contains these tasks:
 (1)  
Prepare to park the airplane.

 (2)  
Prepare to park the airplane for more than 30 days.

 (3)  
Prepare to park the airplane for more than 60 days.

 (4)  
Keep the parked airplane serviceable.

 (5)  
Prepare to operate the airplane.

 B.  Do these task when the airplane is parked for more than 7 days.
 C.  Do these tasks to prevent the deterioration of the airplane structure, finish, or system components.
 TASK 10-11-02-622-001
 2.  Prepare to Park the Airplane____________________________
 A.  Special Tools and Equipment
 (1)  
HTC74-76PPCW Cover - Pitot-Static Probe (4 required)

 (2)  
R/C-A0AC-2, Cover, Angle of Attack Sensor, (Sesame Technologies)

 (3)  
A10002-1 (Preferred) ME65B40136-1 (Optional) Tool, Installation, Protective Covers

 (4)  
PRE65B91267 PT2 Probe Cover (1 Each Engine)

 (5)  
3MIT65B00162 Lock Assembly, Nose Gear Steering (for 2.24 inch diameter steering piston rod)

 (6)  
MIT65B01562 Lock Assembly, Nose Gear Steering (for 2.37 inch diameter steering piston rod)

 B.  Consumable Materials
 (1)  
G01994 Additive - Fuel, Anti-icing, PFA55MB, MIL-I-27686

 (2)  
D00100 Fuel - Additive, Biobor JF (biocide)

 (3)  
G00009 Compound - Corrosion Inhibiting, BMS 3-23

 (4)  
D00507 Fluid - Hydraulic, MIL-H-6083

 (5)  
D00013 Grease - MIL-G-23827

 (6)  
D00016 Grease - Aeroshell 22 or Mobil 28

 (7)  
D00288 Lubricant - Assembly, MCS 352

 (8)  
C00000 Coating - Protective, Alkaline Removable Leeder 306N (Ardrox 306N) or Ardrox 649

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 10-11-02
 ALL  ú ú 02 Page 201 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
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