Fuel Flashcards
On the 737-700 what is the fuel capacity for the wing tanks?
8630 lbs
On the 737-700 what is the fuel capacity for the center tank?
28,803 lbs
The 737-700 total useable fuel capacity is what?
46,063 lbs
What happens if the surge tanks overfill?
Will the crew be notified?
Fuel will discharge overboard
No
How many fuel measuring sticks are in each wing?
How many fuel measuring sticks are in the center tank?
6
4
When will the Fuel LOW on the upper display illuminate?
When will this extinguish?
When the fuel quantity is less than 2,000 lbs in either main tank
When the fuel quantity is increased to at least 2,500 lbs
When does the fuel CONFIG indication illuminate?
When either engine is running
Both center tank fuel pump switches are off
The Center tank quantity is greater than 1,600 lbs
When will the fuel IMBAL on the upper DU illuminate?
When will it extinguish?
Which aircraft have the fuel imbalance disabled on the ground?
When the fuel in the main tanks differ by more than 1,000 lbs
When the imbalance is less than 200 lbs
Aircraft equipped with software versions U10.8A or U11
What if you have a fuel imbalance AND a low fuel situation?
The fuel LOW indication overrides the IMBAL indication
What does a message of VERIFY GW AND FUEL message in the scratchpad mean?
Fuel data has become invalid
What does INSUFFICIENT FUEL alert message in the scratchpad mean?
A change in conditions or change in the flight plan route results in the predicted fuel at your destination to be 2,000 lbs or less
What does CHECK FMC FUEL QUANTITY alert message in the scratchpad indicate?
The FMC has detected an unexpected drop in the fuel quantity.
This may be the first indication of a fuel leak
What types of fuel are approved in the 737-700?
JETA
JETA1
JP5
JP8
F-24
What is the maximum fuel tank temperature?
49C
What is the in flight minimum fuel tank temperature?
-37C
How is the crew notified the fuel temperature is approaching its limitation temperature?
There is no warning
Main fuel tanks must be full if the center tank quantity is greater than _____
1,000 lbs
When should the center tank pump switches be turned off?
When the corresponding fuel pump LOW PRESSURE light is illuminated
If the center tank is empty, both switches should be turned off when the first LOW PRESSURE light illuminates
Explain the lighting schedule for the ENG VALVE CLOSED and SPAR VALVE CLOSED lights…
A dim blue light indicates the engine or spar fuel shutoff valve is closed.
Bright blue indicates the related engine valve or spar fuel shutoff valve is in transit, or the valve position disagrees with the position commanded by the engine Start Lever or Engine Fire switch.
When the valve is fully open, the related light extinguishes.
What does the FILTER BYPASS light indicate?
There is an impending fuel filter bypass due to a contaminated filter
When will fuel pump low pressure cause a master caution to be illuminated?
When two LOW PRESSURE lights on one side of the fuel manifold are illuminated
How many fuel pumps are required to satisfy engine demand under all thrust conditions?
One
Why can all the fuel pumps be turned on and the fuel is only drawn from the center tanks?
The center tank fuel pumps operate at a higher pressure and override the wing tank pumps
When will the master caution indicate a FUEL message in regards to the center tank pump/switch position?
When BOTH fuel pump switches are turned on and BOTH LOW PRESSURE lights are illuminated
Some -700 and all -800 aircraft will illuminate a master caution if both center tank switches are ON and either LOW PRESSURE light illuminates for 10 seconds
Random fuel imbalance must not exceed ____ lbs for taxi, takeoff, flight, or landing
1,000 lbs
Fuel is normally supplied to the APU from which tank?
No 1 tank
How can fuel be supplied to the APU from the right tank?
Right pumps on and the crossfeed open
The scavenge pump is powered by which fuel pump?
It sucks from which tank and puts fuel where?
L FWD PUMP
Center tank to L wing tank
Which tank can’t be suction defueled?
Center tank
