Fuel Flashcards
How many fuel tanks does the airplane have?
How many fuel tanks does the airplane have?
2 integral tanks
Where is fuel tank temperature taken?
Where is fuel tank temperature taken?
Left tank
What types of fuel pumps are in each wing?
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?
What is the Primary ejector pump?
Venturi pump with no moving parts and no electrical power used by the respective engine. Powered by motive flow
What is the purpose of the ACMP?
What is the purpose of the ACMP?
1.Back-up pump in case of primary ejector pump failure
2.Engine start
3.Crossfeed operations
What is the purpose of the DCMP?
What is the purpose of the DCMP?
Used for APU or engine start if AC power or the ACMP is not available
What is the purpose of the scavenge pumps?
What is the purpose of the scavenge pumps?
Maintains fuel level in the collector box
What pump(s) is used once an engine is started?
What pump(s) is used once an engine is started?
Primary (main) ejector pump
What is the purpose of the collector box?
What is the purpose of the collector box?
Keeps the fuel pumps submerged
Ensures constant fuel flow to the respective engine
What is the surge/vent tank?
What is the surge/vent tank?
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
Can fuel be transferred from tank-to-tank or be dumped overboard?
Can fuel be transferred from tank-to-tank or be dumped overboard?
No
What happens when the crossfeed switch is selected to LOW 1?
What happens when the crossfeed switch is selected to LOW 1?
Crossfeed valve is opened
Commands the ACMP 2 to ‘ON’ to provide fuel from the right tank to both engines
What is the only way to close the engine fuel SOV?
What is the only way to close the engine fuel SOV?
Pull the associated engine fire extinguishing handle
When will the FUEL 1(2) LO LEVEL EICAS be presented?
When will the FUEL 1(2) LO LEVEL EICAS be presented?
On the EICAS display, the digits are provided green and turn amber (equal or less than 600 kg / 1320 lb) or red (equal or less than 300 kg /660 lb) to indicate low fuel quantity when reaching pre-determined quantities.
Collector box location?
Collector box location?
Inboard section of each wing
What does the vent system do?
What does the vent system do?
Ensures pressure between tank and ambient remains within structural
limits
Fuel quantity?
Fuel quantity?
20,935 lbs total
When does low fuel level warning go on?
When does low fuel level warning go on?
660 lbs in the respective tank