Fuel Flashcards
Main Tank 1 & 2 Fuel Capacity
8,630 lbs / tank
Center tank fuel capacity
28,803 lbs
Total Fuel Capacity
46,063 lbs
______________ are installed in the fuel tanks to determine the fuel load in the event that the normal fuel quantity indication system is inoperative.
Fuel measuring sticks. 6 in each wing and 4 in the center tank
The fuel LOW indication appears on the Upper Display Unit (DU) when fuel quantity is less than __________ in the related main tank.
2,000 lbs (removed when above 2,500 lbs)
The fuel CONFIG indication appears on the Upper DU when:
Either engine is running
Both center tank fuel pump switches are off
Center tank quantity is greater than 1,600 lbs
The fuel IMBAL indication appears when the main tank fuel quantities differ by more than ___________
1,000 lbs. (removed when imbalance is less than 200 lbs)
A CHECK FMC FUEL QUANTITY message on the FMC may be the first indication of what?
A fuel leak
An INSUFFICIENT FUEL message on the FMC will display when the predicted fuel at the destination is ___________
2,000 lbs or less
The B737NG is authorized to use which fuels?
JetA, JetA1, JP5, JP8, and F-24 fuels. (JP4 & JetB are prohibited)
The max fuel tank temperature is ?
49 degrees C
The min fuel tank temperature is?
-37 degrees C
T/F: If the center tank is empty, both center tank fuel pump switches are positioned OFF when the first center tank fuel pump LOW PRESSURE light illuminates.
True
Each main tank has _____ AC pumps that supply fuel to their respective engine.
2
T/F: With both fuel pumps off, the engines will continue to operate with fuel supplied by suction feed.
True
T/F: Any one fuel pump can satisfy engine demand under all thrust conditions.
True
How many fuel pumps does the center tank have?
Two
T/F: The center tank pumps have a lower output pressure than the main tanks
False. They’re higher
T/F: A single center tank fuel pump can satisfy both engines’ demands under all thrust conditions provided the crossfeed is open.
True
If the fuel pumps are not operating, fuel to the APU is suction fed from the __________
number 1 fuel tank
Which fuel pump must be on to supply motive flow to the center tank jet pump?
The left forward fuel pump
The Nitrogen Generation System (NGS) is installed to convert engine bleed air to nitrogen-enriched air to replace the ambient air in the _________
center fuel tank
Where is the fueling panel station located?
Leading edge of the right wing
T/F: You can pressure defuel and suction defuel any tank
False. You can only suction defuel main tanks 1 & 2
