FUEL SYSTEM Flashcards
The fuel storage system is made up of ______________.
Four integral wing fuel tanks.
Each wing contains an __________ and _________tank, separated by_____.
Inner and Outer Tank separated by the landing gear nacelle.
What is the “third” tank in each wing?
- where?
- what does it do?
- aka?
The third tank or collector tank is located in the lowest part of the inboard tank and is where fuel is introduced to the fuel feed system.
What connects the inboard and outboard fuel tanks in each wing (2)?
A rectangular fuel duct.
A vent duct.
What ensures pressure equalization between the outboard and inboard fuel tanks as it is transferred?
The vent duct.
Can you crossfeed fuel in the air?
No, only on the ground from the outside panel.
The APU is normally fed from the fuel system in the _______ wing.
RIGHT WING.
What provides fuel to the engine driven fuel pump?
The electric boost pumps (2 each side, front and rear) and the jet pumps (1 each side, motive flow), located in the fuel tanks.
What is the usable fuel capacity of each wing tank?
437 gallons.
Where are the main jet pumps?
One is located is each collector tank.
What is used to operate the main jet pumps?
‘motive flow’
How would you recognize a loss of motive flow an the main jet pump not operating. (2)
The electric boost pumps cycling on and off (in auto mode) and alternating with “LOW PRESS” light on the overhead fuel panel.
Where are the Transfer Jet Pumps and how many are there?
There are two located in each inboard tank.
What’s the purpose of the Transfer Jet Pumps?
To keep the collector tank full for the main jet pump and electric boost pumps.
What happens to ‘usable fuel’ when the transfer jet pumps are inoperative?
Useable fuel in the corresponding tank is reduced by 12.15 gallons.
