NATOPS Fuel Flashcards
The fuels system is a
Crashworthy, suction type, with a self sealing tank (lower 1/3)
The main fuel tank capacity?
Left side components?
Right side?
Interconnect?
Has a capacity of 590 gallons (4012 lbs of JP-5).
- refueling, 2 high level shutoff floats, check valve, sump drain and a vent
- 2 check valves, sump drain, vent, APU fuel line, and fuel dump system
270-600 lbs each side
Capacity of Aux Tanks?
PUMP/VALVE FAIL caution?
AUX FUEL TRANSFER FAULT?
120 or 113 gal each
Single valve or pump failure, the other valve or pump will pick up.
Total failure of both xfer/shutoff valves, dual transfer pumps, or FMCP logic
During xfer of aux fuel if right cell fills faster than left you should
Monitor closely, if difference persists stop before right cell is full (approx. 1700lbs.)
Do not initiate unmonitored manual transfer to the main tank from the aux tanks until the Main tank is below _________.
3200 lbs
Emergency jettison of external fuel tanks via the ALL STORE JETT pushbutton is inhibited when?
Tank has less than 40 gal (272 lbs). SEL JETT must be utilized if below 272 lbs. (This means you will have to do it at 300lbs or less since the fuel gauge only reads in 50lb increments.)
Tank fuel sequence?
During automatic transfer?
Main - right ext - left ext
Left - right (reverse of fill)
At AUTO, the Fuel management logic will not begin until the Main fuel tank depletes to approx _______.
2640 lbs
What is the minimum fuel dump rate?
approx. 800 lbs per minute
Can you dump fuel on ground?
Yes. Not protected by WOW.
If there is a ____ pressure differential, the HIFR will stop fueling.
20 psi
During HIFR if the right cell fills faster than the left cell you should
Monitor closely, if it continues stop fueling before right cell is full (1700 lbs)
What may the #1/#2 FUEL PRESS caution indicate?
Possible malfunction of the engine-driven fuel boost pump or an air leak in the fuel system
When do you perform the Manual Fuel Transfer Check?
When main fuel tank capacity has decreased approximately 300lbs
When you put the MASTER switch to REFUEL, what does the sequencing logic keep on?
the Precheck switches