FUEL SYSTEM

Either one

Center tank has more than 250 kg and any wing tank has less than 5,000 kg

The delivery fuel pressure drops

Yes, fuel bypassing the fuel filter (bypass valve)

Below 750 kg (1650 lb)

Not supplied while slats are extended

The quantity shown is not fully usable

To cool the IDG oil

FQ indication is dashed amber across the two last digits on the upper ECAM and ECAM fuel page must be called to check which tank is affected

Two

2

Two fuel pumps in each wing tank

Transfer valves close automatically at the next refueling operation

Cross feed valve must be kept open

Closed for the take off

Two wing tank pumps and one center tank pump

No

The valve opens

Normally closed by pumps pressure

Engine master switches and fire pushbuttons

Engine fire pb or the engine MASTER SW

FADEC

1,500 kg

50 psi (3.5 bars)

Wing tanks then center tank

1500 kg - 1500 kg

Delivery pressure drops

Center tank pumps only

Fuel overflows into the inner cell through a spill pipe

The system select CTR TK pumps off. WING TK pumps feed approx. 500 kg, then CTR TK pumps run again

19,004 kg

Both are correct

When all pumps are running, center pumps will deliver fuel preferentially

Either (20 mins for all tanks) or (17 mins for wing tanks)

150 (FL 100 if jet B)

Stop automatically 5 min. after LO level is reached in center tank

Inhibited

On each sealed rib of each wing tank

On ECAM lower display FUEL page only

Outer cell

Outboard of each wing tank

In the outer section of each wing

Double

For fuel expansion without spillage into the vent surge tank

Yes, wing tank pumps are always running

From the center tank, then from the inner cells to predetermined level, then outer cell fuel combines with inner cell fuel

Yes, after engine start for 2 mins.