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FCOM 19 AUG 10
Any tanks that require refueling, start to be refueled simultaneously. Refuel valves automatically
close, either when the required quantity is reached, or when high level is detected.Wing tank gravity
refueling is achieved via overwing refueling points. If the FCMC is powered, transfer is possible from
any tank to outer or inner. The refueling time at nominal pressure (50 PSI) is approximately 35 min
for all tanks. When both side couplings �� are used, refueling time is approximately 25 min for all
tanks.
REFUELING - DEFUELING
Applicable to: ,
Two refuel couplings are installed under the wings. These couplings allow refueling from both the
right and left sides of the aircraft.
A refuel panel is located on the fuselage side, beneath the right wing.
A second and/or third panel �� is installed close to the refuel couplings.
A gallery connects the refueling coupling to the fuel inlet valve of each tank.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - REFUELING - DEFUELING
A330/A340 FLEET DSC-28-10-110 P 4/4
FCOM 19 AUG 10
From the cockpit, refueling can be controlled with the refuel pushbutton �� . Although manual
control is possible, it is normally automatic when the required fuel load is set on the preselector. In
addition, it is possible to refuel by battery power only.
Any tanks that require refueling, start to be refueled simultaneously. Refuel valves automatically
close, either when the required quantity is reached, or when high level is detected.Wing tank gravity
refueling is achieved via overwing refueling points. If the FCMC is powered, transfer is possible from
any tank to outer or inner. The refueling time at nominal pressure (50 PSI) is approximately 35 min
for all tanks. When both side couplings �� are used, refueling time is approximately 25 min for all
tanks.
Wing tank gravity refueling is achieved via overwing refueling points. If the FCMC is powered,
transfer is possible from any tank (with inner or center pumps) to outer, inner or center tanks. When
both side couplings are used, refueling time at nominal pressure (50 PSI) is approximately 33 min for
all tanks.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - JETTISON
A330/A340 FLEET DSC-28-10-120 P 1/6
FCOM 19 AUG 10
GENERAL
Applicable to:
The Jettison system :
Makes it ‐ possible to jettison fuel in flight.
‐ Output rate is approximate 1 000 kg (2 200 lb) per minute, excluding fuel burn.
‐ Is manually activated by two JETTISON pushbuttons, located on the overhead panel. Both
pushbuttons must be pressed to select the jettison.
Fuel is simultaneously jettisoned from the inner and the center tanks.
When the crew starts the jettison operation :
‐ All X-FEED valves automatically open.
‐ All main and standby pumps run.
Both automatic forward transfer into the center tank is initiated, even if the slats are out, the landing
gear is down, and whatever the altitude.
Note: In case of the trim tank pump failure, forward transfer is by gravity, as long as the pitch
attitude is below 3 °.
The jettison operation continues, until one of the following occurs :
‐ The crew stops the operation.
‐ Both inner fuel tank low level sensors on one side become dry.
‐ The Fuel Control and Monitoring System (FCMS) stops the operation at a fuel content level preset
on the FMGS MCDU �� .
‐ The combined inner tank fuel quantity is less than 10 000 kg (22 000 lb).
Note: The crossfeed valves remain open, and the standby pumps continue to run, as long as both
JETTISON pushbuttons are selected ON.
GENERAL
Applicable to: ,
The Jettison system :
‐ Makes it possible to jettison fuel in flight.
‐ Output rate is approximate 1 000 kg (2 200 lb) per minute, excluding fuel burn.
‐ Is manually activated by two JETTISON pushbuttons, located on the overhead panel. Both
pushbuttons must be pressed to select the jettison.
Fuel is simultaneously jettisoned from the inner and the center tanks.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - JETTISON
A330/A340 FLEET DSC-28-10-120 P 2/6
FCOM 19 AUG 10
When the crew starts the jettison operation :
‐ The crossfeed valve opens.
‐ All main and standby pumps run.
An automatic forward transfer into the center tank is initiated, even if the slats are out, the landing
gear is down, and whatever the altitude.
Note: In case of the trim tank pump failure, forward transfer is by gravity, as long as the pitch
attitude is below 3 °.
The jettison operation continues, until one of the following occurs :
　
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