Fuel System Flashcards
How is a fuel imbalance corrected using the crossflow valve?
Opening the crossflow valve and turning off the fuel pumps on the low wing
What are the correct indications during the fuel quantity indicator test?
7000, 7000, 14000, amber L-R FUEL LEVEL LOW CAS
If an amber L or R FUEL LEVEL LOW CAS appears with more than 650 lbs of fuel remaining in the respective wing, what should be done?
Descend without delay to a warmer altitude at a minimum speed of 0.80M
Where are the fuel hoppers located?
Inboard aft portion of each wing tank
The automatic refueling system (ground service control panel) uses electrical power from what source?
Ground Service Bus
Fuel low-level warnings are provided by low-level sensors, which are installed where in the wing?
In each fuel hopper tank
Where are the electrically driven fuel boost pumps located?
Forward portion of each wheel well
What is the function of the pressure fueling static port located under each wing?
It provides a reference pressure to prevent over-pressurization of the wing during fueling
How are the main fuel shutoff valves checked during the preflight walkaround?
Verify that the valves are open by physically checking that each red valve position indicator is in the 7 o’clock position
When and how are fuel quantity updates performed?
Hourly, using data from the FQMS. On the FMS PERF INIT page 5/5, perform a “DELETE” to line select key 2L
What are the electrical power sources for the fuel boost pumps?
L/R MAIN pumps - L/R ESS DC BUS
L/R ALT pumps - L/R MAIN DC BUS
How much fuel is remaining in the hopper when an amber L/R FUEL LEVEL LOW CAS appears?
650 lbs
What is the maximum standard fuel load?
29,500 lbs
Max fuel imbalance
Varies between 400-2000 lbs depending on aircraft weight - Reference AFM - Limitations graph
If a main fuel boost pump should fail, will the alternate fuel boost pump automatically come on if it was selected off?
No, there is no boost pump auto-change feature installed
