(d)  
Find and correct the cause of the fuel spill.

 (e)  
Inspect enclosed areas to make sure they are free of fuel vapor.

 (f)  
Do not begin the refuel operation again until the fire department or the person(s) in charge have given approval.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 E. Passenger Precautions
 S 653-008
 WARNING: OBEY THE SUBSEQUENT PASSENGER PRECAUTIONS DURING A REFUEL
_______ OPERATION. IF YOU DO NOT OBEY THESE REQUIREMENTS INJURY TO PERSONS CAN OCCUR.
 (1)  
Obey all airport and operator procedures if you refuel the airplane with passengers onboard.

 S 653-009

 (2)  
For each airplane type, a hazardous area must be identified for boarding or unloading passengers during a refuel operation. Barriers must be in place to stop passengers from entering this hazardous area.

 F. Airplane System Precautions
 S 653-010
 WARNING: OBEY THE SUBSEQUENT AIRPLANE SYSTEM PRECAUTIONS DURING A REFUEL
_______ OPERATION. IF YOU DO NOT OBEY THESE REQUIREMENTS A FIRE OR AN EXPLOSION CAN OCCUR.
 (1) Do not operate these airplane systems during a refuel operation:
 (a)  
Weather mapping radar

 (b)  
HF communications system

 S 653-096
 (2)  
The SATCOM system can be operated during a refuel operation.

 S 653-012

 (3)  
Do not do these maintenance tasks during a refuel operation:

 (a)  
Start or stop the APU

 (b)  
Connect or disconnect the battery chargers, aircraft ground-power generators or other electrical ground-power

 (c)  
Fill or change oxygen bottles

 (d)  
Remove electrical power

 NOTE: Damage to refuel system components can occur.
____
 (e)  
Begin refueling if a fire or engine overheat warning EICAS message is displayed

 (f)  
Begin refueling if any part of the landing gear is unusually hot.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 653-013
 (4)  Make sure these components are in the closed position before you begin the refuel operation:
 NOTE: Fuel spills, damage to the airplane or inability to close
____ doors can occur if these components are not closed.
 (a)  
Wing pressure relief valves (4 locations)

 (b)  
HST pressure relief valve (with an HST)

 (c)  
Landing gear doors

 (d)  
Overwing entry doors (passenger and combi airplanes only).

 S 653-014
 (5)  Damage or wear at the refuel receptacle adapter can cause fuel leaks. Do these maintenance actions to prevent fuel leaks:
 (a)  
Make sure the mating surface of the fuel hose and refuel receptacle adapter are clean and free from unwanted material.

 (b)  
Make sure the slots and lugs on the adapter are not damaged.

 (c)  
Use a wear gauge to make sure the adapter is within operational limits (AMM 28-21-00/601).

 (d)  
Make sure the defuel lever is correctly positioned in the recess for the refuel receptacle adapter.

 S 653-015
 (6)  
Make sure the landing gear wheel chocks do not touch the tires. The wheel chocks can wedge against the tire after you add fuel.

 S 653-016

 (7)  
A Refuel operation with a main engine operating is an emergency procedure. Obey all airport and operator provided emergency procedures.

 G. Airplane Separation Distance Limits
 S 653-017
 WARNING: OBEY THE SUBSEQUENT FUELING SEPARATION DISTANCES DURING A
_______ REFUEL OPERATION. IF YOU DO NOT OBEY THESE REQUIREMENTS A FIRE OR AN EXPLOSION CAN OCCUR.
　
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