Fuel Questions Flashcards
1
Q
How many fuel tanks does the airplane have?
A
- 2 integral tanks
2
Q
Where is fuel tank temperature taken?
A
- Left tank
3
Q
What types of fuel pumps are in each wing?
A
- Primary ejector pump
- ACMP
- DCMP (right tank)
- 3 scavenge ejector pumps
4
Q
What is the primary ejector pumps?
A
- Venturi pump with no moving parts and no electrical power used by the respective engine
- Powered by Motive flow
5
Q
What is the purpose of the ACMP?
A
- Back-up pumpkin case of primary ejector pump failure
- Engine start
- Cross feed operations
6
Q
What is the purpose of the DCMP?
A
- Used for APU or engine start if AC power or the ACMP is not available
7
Q
What is the purpose of the scavenge pumps?
A
- Maintains fuel level in the collector box
8
Q
What pumps is used once an engine is started?
A
- Primary (main) ejector pumps
9
Q
What is the purpose of the collector box?
A
- Keeps the fuel pumps submerged
- Ensures constant fuel flow to the respective engine
10
Q
What is the surge/vent tank?
A
- Collects fuel during wing-down maneuvers and returns it to the main tanks once the wings are level
- Equalizes tank pressure with atmosphere in flight and during refueling
11
Q
Can fuel be transferred from tank-to-tank or be dumped overboard?
A
- NO
12
Q
What happens when the cross feed switch is selected to LOW 1 ?
A
- Cross feed valve is open
- Commands the ACMP 2 to ON to provide fuel from the right tank to both engines
13
Q
What is the only way to close the engine fuel SOV?
A
- Pull the associated engine fire extinguishing handle
14
Q
When will the FUEL 1(2) LO LEVEL EICAS be presented?
A
- 660 lbs of fuel remaining in the associated tank
