Fuel

Question 1

The maximum allowed random lateral fuel imbalance between tanks 1 and 2 is_____
A. 1000 lbs.
B. 800 lbs.
C. 1100 lbs.

Answer 1

A. 1000 lbs.

Question 2

Normally, the fuel crossfeed valve is in what position?
A. open
B. closed
C. open if the fuel quantity in the center tank is between 1000 and 5000 lbs.

Answer 2

B. closed

Question 3

While on the ground, center tank fuel pump switches must not be positioned ______________ unless the
center tank fuel quantity exceeds 1000 pounds.
A. ON
B. OFF

Answer 3

A. ON

Question 4

You must not position the center tank fuel pump switches to ON unless __________.
A. personnel are available on the flight deck to monitor low-pressure lights
B. maintenance is available
C. center tank fuel quantity is between 500-900 lbs

Answer 4

A. personnel are available on the flight deck to monitor low-pressure lights

Question 5

The 737 fuel tank uses two AC-powered fuel pumps, which are ________ and lubricated.
A. pneumatically cooled
B. oil cooled
C. fuel cooled

Answer 5

C. fuel cooled

Question 6

The center tank pumps produce _______ pressure than the main tank pumps on the B737-800,.
A. higher
B. lower

Answer 6

A. higher

Question 7

In the event normal electrical fuel pump operation is not available, the engine driven fuel pumps 
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ 
A. will run on alternate DC power
B. will not provide suction feed
C. will provide suction feed

Answer 7

C. will provide suction feed

Question 8

________________ closes whenever their respective engine fire warning switch is pulled or engine start lever is placed to CUTOFF in the 737.
A. The engine fuel shutoff valve
B. Both the spar fuel shutoff valve and the engine fuel shutoff valve
C. The spar fuel shutoff valve

Answer 8

B. Both the spar fuel shutoff valve and the engine fuel shutoff valve

Question 9

Fuel for the APU is normally supplied from the ______ fuel manifold when AC fuel pumps are operating.
A. LEFT
B. RIGHT
C. CENTER

Answer 9

A. LEFT

Question 10

When the ENGINE VALVE CLOSED light is extinguished, this indicates the related valve is ___________.
A. OPEN
B. CLOSED
C. IN TRANSIT

Answer 10

A. OPEN

Question 11

You know the spar valve is closed with an illuminated (blue) _________ SPAR VALVE CLOSED light.
A. flashing
B. dim
C. bright

Answer 11

B. dim

Question 12

On the forward overhead fuel control panel, the FUEL temperature (TEMP) indicator indicates fuel 
temperature in which tank?
A. center tank
B. No. 2 tank
C. No. 1 tank

Answer 12

C. No. 1 tank

Question 13

On the 737, an illuminated bright blue crossfeed VALVE OPEN light is indicating ____________.”
A. the crossfeed valve is in transit
B. the crossfeed valves position and CROSSFEED selector disagree
C. all answers are correct

Answer 13

C. all answers are correct

Question 14

An amber illuminated FILTER BYPASS light is indicating ____________.
A. the engine is starting
B. an impending hydraulic filter bypass
C. an impending fuel filter bypass

Answer 14

C. an impending fuel filter bypass

Question 15

An amber illuminated FUEL PUMP LOW PRESSURE light is indicating _________.
A. fuel pump output pressure is low and the respective FUEL PUMP switch is ON
B. fuel pump output pressure is high and the respective FUEL PUMP switch is ON
C. the aircraft is being pressure refueled

Answer 15

A. fuel pump output pressure is low and the respective FUEL PUMP switch is ON

Question 16

Placing any FUEL PUMP Switch to ON ______________.
A. deactivates the fuel pump
B. activates the fuel pump
C. allows for refueling

Answer 16

B. activates the fuel pump

Question 17

The quantity indication on the fuel system calculates _________ fuel quantity in each tank.
A. the useable
B. the useable and unusable
C. the unusable

Answer 17

A. the useable

Question 18

An amber illuminated Fuel (LOW) indication will display when __________.
A. the fuel quantity is less than 2000 lbs. in the related main tank
B. the fuel quantity is less than 2500 lbs. in the related main tank
C. the fuel quantity is less than 2676 lbs. in the related main tank

Answer 18

A. the fuel quantity is less than 2000 lbs. in the related main tank

Question 19

An amber displayed fuel configuration (CONFIG) alert is indicating ____________.
A. either engine running and both center fuel pump switches are positioned OFF, and center fuel tank quantity
is greater than 1600 lbs
B. either engine running and both center fuel pump switches are positioned OFF
C. center fuel tank quantity is greater than 1600 lbs

Answer 19

A. either engine running and both center fuel pump switches are positioned OFF, and center fuel tank quantity
is greater than 1600 lbs

Question 20

An amber illuminated Fuel Imbalance (IMBAL) Indication is displayed when main tanks differ by more than
____________ and will be displayed until imbalance is reduced to _______.
A. 1000 lbs; 500 lbs
B. 1676 lbs; 500 lbs
C. 1000 lbs; 200 lbs

Answer 20

C. 1000 lbs; 200 lbs

Question 21

The Fuel Flow Readout on the upper display unit displays fuel flow to the engine when you have the FUEL
FLOW switch in the RATE position ____________.
A. kilograms per hour X 100
B. in gallons per hour X 100
C. in pounds per hour X 1000

Answer 21

C. in pounds per hour X 1000