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CTR TK PUMP off when the inner tank is full. The wing tank pumps will feed until the engine have
used approximately 500 kg (1 100 lb) of fuel when the fuel level reaches the underfull sensors. The
logic circuits then restart the center tank pumps.
FUEL RECIRCULATION SYSTEM
Applicable to:
Refer to DSC-70-40-50 IDG COOLING SYSTEM .
Some of the fuel supplied to each engine goes from the high-pressure fuel line in that engine,
through the integrated drive generator (IDG) heat exchanger (where it absorbs heat), to the fuel
return valve and to the outer fuel tank.
This operation ensures the IDG cooling when the oil temperature is high or when at low engine
power.
The FADEC controls the fuel return valve.
If the outer tank is already full, the fuel overflows to the inner tank through a spill pipe.
If center tank is feeding, the wing tank will tend to overfill and the system automatically selects the
CTR TK PUMP off when the inner tank is full. The wing tank pumps will feed until the engine have
used approximately 500 kg (1 100 lb) of fuel when the fuel level reaches the underfull sensors. The
logic circuits then restart the center tank pumps.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - FUEL RECIRCULATION SYSTEM
A318/A319/A320/A321 FLEET DSC-28-10-60 P 2/4
FCOM 19 AUG 10
FUEL RECIRCULATION SYSTEM
Applicable to: ,
, MSN
Refer to DSC-70-40-50 IDG COOLING SYSTEM .
Some of the fuel supplied to each engine goes from the high-pressure fuel line in that engine,
through the integrated drive generator (IDG) heat exchanger (where it absorbs heat), to the fuel
return valve, and back to the wing tank.
This operation ensures the IDG cooling when the oil temperature is high or when at low engine
power.
The FADEC controls the fuel return valve.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - FUEL RECIRCULATION SYSTEM
A318/A319/A320/A321 FLEET DSC-28-10-60 P 3/4
FCOM 19 AUG 10
FUEL RECIRCULATION SYSTEM
Applicable to: MSN,
Refer to DSC-70-45-60 GENERAL
Some of the fuel supplied to each engine goes from the high-pressure fuel line in that engine,
through the integrated drive generator (IDG) heat exchanger (where it absorbs heat), to the fuel
return valve, and back to the wing tank.
This operation ensures the IDG cooling when the oil temperature is high or when at low engine
power.
The FADEC controls the fuel return valve.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - FUEL RECIRCULATION SYSTEM
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-28-10-60 P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - REFUELING AND DEFUELING
A318/A319/A320/A321 FLEET DSC-28-10-70 P 1/6
FCOM 19 AUG 10
REFUELING - DEFUELING
Applicable to:
One (two) refueling point(s) is (are) installed under the wings, ‐ enabling the aircraft to be refueled
from either the right or left �� side.
‐ A refuel panel is located on the fuselage side beneath the right wing, or under the right or left wing
adjacent to the refuel coupling.
A gallery connects the refuel coupling to each tank's refuel valve.
Refueling is normally automatic, the required fuel load being set on the preselector.
Manual control is also available.
Automatic refueling starts with the outer cells. If the selected fuel load exceeds the wing tank
capacity, the center tank is simultaneously refueled.
When an outer cell is full the fuel overflows into the inner cell through a spill pipe.
Refuel valves close automatically, when the tanks contain the preselected load, or when sensors
detect a high fuel level.
The aircraft can be refueled, when only battery power is available.
The wing tanks can be refueled by gravity, through refueling points on top of the wings.
A transfer valve, between the engine feed system and the refueling gallery, allows :
‐ The tank pumps to transfer fuel from one tank to another.
‐ Defueling through the refuel coupling.
Approximate refueling time at nominal pressure is :
‐ 17 min for wing tanks.
‐ 20 min for all tanks.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
DESCRIPTION - REFUELING AND DEFUELING
A318/A319/A320/A321 FLEET DSC-28-10-70 P 2/6
FCOM 19 AUG 10
REFUELING - DEFUELING
Applicable to: ,
, MSN
One (two) refueling point(s) is (are) installed under the wings, ‐ enabling the aircraft to be refueled
from either the right or left �� side.
　
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