Fuel Flashcards
The fuel system is designed so normal fuel feed sequencing is
Automatic
What is the maximum allowable fuel imbalance between inner tanks (inflight and landing) if the heavier tank is full
3,300 pounds
In flight with slats retracted, how is fuel sequenced to the engines with fuel in all tanks
Center tank pumps feed the engines first
In flight with MODE SEL in AUTO and fuel in the center tank, the center tank pumps
Run only if slats are retracted
What happens to the center tank fuel pumps (if there is fuel in the tank) after each engine is started
Center tank pumps will run for two min after each engine reaches idle to verify operation
When will the center tank begin to feed the engines after takeoff (if there is fuel int he center tank)
When the slats re retracted
In flight, with fuel MODE SEL in MAN, and the CTR TK pumps ON, what is the effect on the center tank pumps
The center tank pups run continuously until turned off with the CTR TK pump switches
A fuel pump FAULT light indicates
Fuel pump low pressure
Resetting tripped wing tank fuel boost pump circuit breaker is prohibited
At all times
A fuel MODE SEL FAULT light indicates
Center tank has more than 550 pounds of fuel AND the left or right wing tank has less than 11,000 pounds
The crossed valve is normally
closed
What do double dashes over the last two digits of the fuel on board (FOB) indication mean
The fuel quantity indication is still operative, but inaccurate
Which of the following would cause an amber half box to appear around the E/WD FOB display when the fuel quantity is not fully usable?
Transfer valve failure
Engines can be gravity fed
From the wing tanks only
The over-pressure burst disk
Ruptures if the internal and external pressure differential exceeds a predetermined value
