Fuel Flashcards
Your #1 fuel quantity is inoperative, how would
you determine how much fuel is in the tank?
The Captain must monitor any fueling
operation requiring the use of Fuel Measuring
Sticks to ensure the accuracy of readings
according to MEL procedures.
Where can you locate the charts used for
verifying fuel quantity when using Fuel Measuring
Stick readings?
Special Procedures section of the MEL.
When does a fuel LOW PRESSURE light cause
the MASTER CAUTION light to illuminate?
• Two LOW PRESSURE lights illuminated in
same tank illuminate MASTER CAUTION and
FUEL system annunciator lights. One LOW
PRESSURE light causes MASTER CAUTION
and FUEL system annunciator lights to
illuminate on MASTER CAUTION light recall.
• With the CTR tank FUEL PUMP switches
ON, continuous illumination of one or both (as
installed) LOW PRESSURE light(s) for ten
seconds illuminates MASTER CAUTION and
FUEL system annunciator lights.
• With one CTR tank FUEL PUMP switch OFF,
illumination of opposite CTR tank LOW
PRESSURE light illuminates the MASTER
CAUTION and FUEL system annunciator
lights.
When does the fuel IMBAL indication
illuminate?
Main tanks differ by more than 1000 lbs
When changing the position of the crossfeed
switch, what indication should you see with the light?
Blue light illuminates BRIGHT then DIM when
moving the switch from Close to Open.
Blue light illuminates BRIGHT then extinguishes
when moving the switch from open to close.
When will the Fuel IMBAL alert extinguish?
Imbalance is reduced to 200 lbs.
With a Fuel IMBAL indication, what resource
would you use to determine the type of
documentation required?
FOM Event Reporting requirements
What are the primary reasons to avoid fuel
imbalances?
Structural life of the airframe and landing gear, not
for controllability
What is the risk of routine fuel balancing when
not near the imbalance limit?
Pilot errors and not identifying a fuel leak in a timely
manner
When does the Captain declare Minimum
Fuel?
When having “committed to a specific airport,” it is
determined that any change to the existing clearance to that airport may result with a landing below the greater of:
• 4,000 lbs
• Planned Final Reserve Fue
When does the Captain declare Emergency
Fuel?
• The calculated useable fuel upon landing at
the nearest airport where a landing can be
made will be less than Planned Final Reserve
Fuel
• A low fuel state requires immediate traffic
priority
What does the FUEL FLOW alert indicate
(MAX)?
Engine fuel flow is abnormally high when compared
to the FMC expected fuel flow. The message is
displayed independently for each engine.
What does the illumination of the fuel FILTER
BYPASS light indicate?
An impending or actual fuel filter bypass due to a
contaminated filter
What is the primary concern when the Fuel
FILTER BYPASS light is illuminated?
Engine flameout may occur
What does the INSUFFICIENT FUEL alert on
the engine display and the MCDU scratchpad indicate in the MAX?
How would the NG aircraft display the
alert?
FMC fuel at the destination is predicted to be less
than 2,000 lb.
NG aircraft only display INSUFFICIENT FUEL as a
scratchpad message in the MCDU.
