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crossfeed valves open, one pump is capable of supplying all four engines in cruise.
Applicable to: ,
INNER TANK PUMPS
During normal operation, all main pumps run.
If a main pump fails, or is switched off, then the standby pump runs. With the crossfeed valves
open, one pump is capable of supplying all both engines.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - ENGINE FEED
A330/A340 FLEET DSC-28-10-50 P 2/6
FCOM 19 AUG 10
Applicable to:
CROSSFEED VALVES
A X-FEED valve is associated with each engine. It connects the engine and its associated pumps
to the X-FEED line. This enables any pump to supply any engine. All X-FEED valves automatically
open :
In electrical ‐ emergency configuration, and
‐ During jettison operation.
X-FEED valves 2 and 3 also open in the event of aft transfer from the inner tanks.
Applicable to: ,
CROSSFEED VALVES
The cross feed valve enables any pump to supply any engine. The X-FEED valves automatically
opens in electrical emergency configuration.
Applicable to: ALL
ENGINE LP VALVE
The flow of fuel to an engine can be stopped by closing its respective low pressure (LP) valve via
the :
‐ Engine master switch, or the
‐ ENG FIRE pushbutton.
FUEL FEED WITH ALL ENGINES FLAME OUT(ELEC EMER CONFIG)
Applicable to:
EMER GEN POWERED BY THE RAT
‐ All X-FEED valves open automatically.
‐ Only MAIN Pump 1 remains powered.
‐ If Pump 1 fails, or is selected OFF, STBY Pump 4 will automatically replace it.
‐ When the speed goes below 260 kt, or when LAND RECOVERY is selected ON, all MAIN and
STBY pumps are lost.
Applicable to: ,
EMER GEN POWERED BY THE RAT
‐ The X-FEED valve open automatically.
‐ Only the left Pump 2 remains powered.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - ENGINE FEED
A330/A340 FLEET DSC-28-10-50 P 3/6
FCOM 19 AUG 10
‐ If left Pump 2 fails, or is selected OFF, right Pump 2 will automatically replace it.
‐ When the speed goes below 260 kt, or when LAND RECOVERY is selected ON, all MAIN and
STBY pumps are lost.
Applicable to: ALL
FLIGHT ON BATTERIES
All main and STBY pumps are lost.
ENGINE FEED AND CENTER TO INNER TRANSFER
Applicable to:
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - ENGINE FEED
A330/A340 FLEET DSC-28-10-50 P 4/6
FCOM 19 AUG 10
ENGINE FEED
Applicable to:
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - ENGINE FEED
A330/A340 FLEET DSC-28-10-50 P 5/6
FCOM 19 AUG 10
ENGINE FEED
Applicable to: ,
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - ENGINE FEED
Intentionally left blank
A330/A340 FLEET DSC-28-10-50 P 6/6
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - FUEL FEED SEQUENCE
A330/A340 FLEET DSC-28-10-60 P 1/2
FCOM 19 AUG 10
NORMAL OPERATION
Applicable to:
Fuel is always fed to the engines from the inner tanks.
The fuel transfer sequence is as follows :
1. Center tank fuel transfers to the inner tanks.
2. Each inner tank empties down to 4 000 kg (8 830 lb).
3. Trim tank fuel transfers to the inner tanks.
4. Each inner tank empties down to 3 500 kg (7 720 lb).
5. Outer tank fuel transfers to the inner tanks.
NORMAL OPERATION
Applicable to:
Fuel is always fed to the engines from the inner tanks.
The fuel transfer sequence is as follows :
1. Each inner tank empties down to 4 000 kg (8 830 lb).
2. Trim tank fuel transfers to the inner tanks.
3. Each inner tank empties down to 3 500 kg (7 720 lb).
4. Outer tank fuel transfers to the inner tanks.
Note: If required for CG control, the trim tank may be emptied earlier (Refer to DSC-28-10-90
GENERAL).
NORMAL OPERATION
Applicable to: ,
Fuel is always fed to the engines from the inner tanks.
The fuel transfer sequence is as follows :
1. Center tank fuel transfers to the inner tanks.
2. Each inner tank empties down to 4 000 kg (8 830 lb).
3. Trim tank fuel transfers to the inner tanks.
4. Each inner tank empties down to 3 500 kg (7 720 lb).
5. Outer tank fuel transfers to the inner tanks.
Note: If required for CG control, the trim tank may be emptied earlier (Refer to DSC-28-10-90
GENERAL).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - FUEL FEED SEQUENCE
Intentionally left blank
　
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