Fuel Flashcards
What is the role of the A320 fuel system?
6 parts
Store fuel (in wings)
Supply fuel to engines and APU
Supply fuel in correct quantity to tanks during refuelling
Circulate fuel to cool IDG
Control transfer of fuel (from centre to wing inner)
Keep fuel in outer wing tanks for wing bending and flutter relief
What are vent tanks for?
To allow for fuel expansion
Vents when > 2% max uplift
If fuel temp increases by 20°C what % does its volume increase by?
2%
Minimum fuel for takeoff
1500kgs
How can you close the LP fuel valve?
ENG MASTER to OFF
ENG FIRE pb PRESS
What happens if electric pumps fail?
Engines are gravity fed (NOT suction fed)
Fuel feeding sequence?
Centre
Wing inner
Wing outer
How many refuelling panels?
2
How many refuelling couplings?
2
Does the a/c have gravity refilling points?
Yes
Outer tanks
What controls automatic refuelling?
FQI
Fuel Quantity Indicator
What colour is the FUEL X FEED “ON” light?
White
“OPEN” light is GREEN
How long do the centre fuel tank pumps run once the tank reaches low level?
5 mins
On the refuelling panel, what two events can the “END” light show?
Flashing green - refuelling has been aborted
Solid green - refuelling is complete
Which tank feeds the engines?
Inner wing tank (with 2 pumps)
When does the centre tank feed the inner wing tanks?
Once 500kgs is used
At what fuel weight do the transfer valves open?
When either inner wing tank reaches approx 750kgs BOTH valves open to maintain fuel balance
Controlled by the FLSCUs Fuel Level Sensing Control Units
When will the fuel quantity flash green?
At an imbalance of 1500kgs
When does the ECAM FUEL USED ind reset?
At engine start (on the ground only)
To cross feed fuel which pumps need to be off?
The low tank pumps
During a fuel imbalance which side flashes?
The tank with most fuel flashes green
Total usable fuel
24,209 litres
When will the centre tank indication be boxed in amber?
If both centre tank transfer valves have failed closed or are turned off
(Might refer to valves as pumps for 20C)
What will indicate the IDG oil outlet is overheating?
IDG 1/2 FAULT in AMBER
