Fuel Flashcards
1
Q
Fuel Transfer Isolation Button pushed in
A
interrupts the fuel transfer from auxiliary tanks to the wing tanks
2
Q
How many fuel tanks
A
- 2 x wing tanks
- 2 x aux tanks located in pressurized fwd and aft cargo (6 fuel modules in fwd, 7 fuel modules in aft)
3
Q
How is fuel transfer from aux tanks
A
- fuel transfers to the wings only
- via differential pressure, or dedicated electrical pumps if pressure is not enough
4
Q
Components in each wing tank
A
- ejector fuel pump
- AC electric fuel pump
- 3 x scavenge ejector pump
- DC fuel pump (right tank only)
5
Q
AC Fuel Pump logic
A
Supply fuel during:
- onside engine start
- cross side engine during x-bleed engine start
- APU operating with engines off
- back up during ejector pump failure
6
Q
How much fuel in tank at FUEL 1(2) LOW LEVEL
A
400 kg (880 lbs) in respective tank
7
Q
Refueling/Defueling logic of Aux tanks
A
FWD AUX: Refuel - aft most module first Defuel - fwd most module first
AFT AUX Refuel - fwd most module first Defuel - aft most module first
8
Q
Max Fuel imbalance between wing tanks
A
800 lbs
