Fuel Flashcards
When does the low level fuel caution come on for each wing-tank
750kg (1,500 is is minimum total for take-off)
What is the max imbalance of the outer and inner wingtanks
Inner, 1,500-2,250 depending on fuel.
Outer 690kg (max vs zero)
Minimum and Maximum fuel temp Jet A1
-43, +54
Max refueling pressure
50 psi
Max total fuel
18,728kg
When does the outer wing-tank open its valves
When inner tank is <750kg
In auto mode, when do the center tanks run
2 minutes after engine start
after t-o with slats retracted (and 500kg burned)
for 5 minutes after the tank is empty
In what “normal” scenario in flight, will the center tanks turn off (with lots of fuel remaining)
If the wingtank gets overfilled due to the return lines from the fuel cooling of the IDG etc
Will then stop until 500kg is burned from the wing tank
What will cause a (half) amber box around the FOB
Center tanks failed/off with fuel remaining
Outer wingtanks valve failure
Which tanks will still deliver fuel, with all pumps failed
Wingtanks, center tank has no suction feeding
What does an amber line through the last two digits of a fuel tank quantity indication mean
Quantity indicators operating in degraded mode. Quantity is +300/-750 of indicated
How many motors power the cross feed valve (fuel)
2
