Fuel Flashcards
How much usable fuel
5,732 lb (2,866 lb per wing)
Do we need electricity to fuel the aircraft
No, but it is safer to fuel with electricity to make sure the vent valve opens
How many fuel pumps are in the aircraft
4 electric, 2 main ejector, 4 scavenger, 2 engine driven
How much unusable fuel in each wing
24 lbs add 76.9 in an event of ejector pump inop
How to recognize ejector pump failure
Flashing ON light and LOW PRESSURE light
How many fuel tanks are there
2 outboard, 2 inboard, 2 collector
What heats fuel
Oil
Can fuel totalizer be used with fuel quantity indicator inop
Use fuel measuring sticks and after use totalizer
How to use dripless sticks
Start form the outboard until you get a reading and refer to the chart for for fuel quantity
Fuel filter light
Indicating impending bypass
Maximum fuel imbalance
600 lbs
How to crossfeed
All pumps on, crossfeed open, low side pumps OFF
What kind of fuel tanks does the aircraft have
Wet wing
How can we fuel the plane
Pressure fueling or over the wing
How many tanks are in each wing
Each wing has 2 tanks, an inboard and outboard. The tanks are interconnected by fuel duct that is gravity fed making the two tanks act as a single reservoir
Does the aircraft need electricity to pressure fuel
No but is recommended
What does the Transfer jet pump do
Operate by motive flow. Their purpose is to keep the collector tank at level sufficient to provide a constant source of fuel for the main jet pump and electric boost pumps. When operating the transfer jet pumps increase the usable fuel by taking fuel from the lowest portion of the inboard tank and transferring it into the collector tank. When the transfer jet pumps are not operating usable fuel in corresponding tank is reduced by 79.6 lbs
How many filters does the system have
2 filters a side
What is the maximum fuel the dripless stick will read
2238lb
Where is fuel for the APU supplied from
Right side
What powers the jet pumps
Venturi
When are electric fuel pumps are used
Engine start
Cross feed
Main jet pump failure
What indicates a loss of motive flow
Buy electric boost pumps cycling On and OFF in AUTO with LOW PRESS light ON
How is fuel quantity measured
Quantity transmitters send signals to the master quantity indicators. This system is capacitate type system
Fuel can also be measured by magnetic dripless measuring stick
What happens to fuel totalizer if power is lost or signal failure occurs
The display will go blank
Where does motive flow get fuel from
HMU return
What happens when you open cross feed
No motiveflow
Where does any unused fuel get sent
Surge tank
The firewall shutoff valve is operated through the
Fire extinguisher T-handle
