Fuel Flashcards
How many fuel tanks does the airplane have?
2 integral tanks
Where is fuel tank temperature taken?
Left tank
What types of fuel pumps are in each wing?
Primary ejector pump
ACMP
DCMP (right tank)
3 scavenge ejector pumps
What is the primary ejector pump?
Venturi pump powered by motive flow
What is the purpose of the ACMP?
Back-up pump in case of primary ejector pump failure
Engine start
Crossfeed operation
What is the purpose of the DCMP?
Used for APU or engine start with no AC power or if ACMP is not available
What is the purpose of the scavenge pumps?
Maintains fuel level in the collector box
What pump is used once an engine is started?
Associated primary ejector pump
What is the purpose of the collector box?
Keeps the fuel pumps submerged
Ensures constant flow to the respective engine
What is the surge/vent tank?
Collects fuel during wing-down maneuvers and returns it to the main tanks once wings are level
Equalizes tank pressure with atmosphere in flight and during refueling
Can fuel be transferred from tank-to-tank?
No
What happens when the crossfeed switch is selected to LOW 1?
Crossfeed valve opens
Right ACMP on for fuel from right tank to both engines
What is the only way to close the engine fuel SOV?
Pull the associated FIRE handle
When will the FUEL 1(2) LO LEVEL message be presented?
660 lbs remaining in tank
