Fuel Flashcards
Q.6.1. 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.
Reference: 28-6-01 Flight Deck Fuel Quantity Indicators (Main Tanks)
Q.6.2. Where can you locate the charts used for verifying fuel quantity when using Fuel Measuring Stick readings?
A careful review of the associated MEL will refer you to the Special Procedures section of the MEL.
Reference: SP #28 NG/MEL Manual
Q.6.3. 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.
Reference: FRM B737NG/MAX 12.1.1
Q.6.4. When does the fuel IMBAL indication illuminate?
Main tanks differ by more than 1000 lbs.
Reference: FRM B737NG/MAX 12.1.3
Q.6.5. 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.
Reference: FRM B737NG/MAX 12.1.1
Q.6.6. When will the Fuel IMBAL alert extinguish?
Imbalance is reduced to 200 lbs.
Reference: FRM 12.1.3
Q.6.7. With a Fuel IMBAL indication, what resource would you use to determine the type of documentation required?
FOM Event Reporting requirements.
(opens in a new tab)Reference: FOM 22.1.2
Q.6.8. What are the primary reasons to avoid fuel imbalances?
Structural life of the airframe and landing gear, not for controllability.
Reference: AOM 5.10.1
Q.6.9. 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.
(opens in a new tab)Reference: AOM 5.10.1 - 5.10.2
Q.6.10. 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 Fuel
(opens in a new tab)Reference: FOM 17.6.1, Flight Ops Bulletin 24-01
Q.6.11. 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
(opens in a new tab)Reference: FOM 17.6.1, Flight Ops Bulletin 24-01
Q.6.12. 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.
(opens in a new tab)Reference: FRM MAX 7.1.1.7
Q.6.13. What does the illumination of the fuel FILTER BYPASS light indicate?
An impending or actual fuel filter bypass due to a contaminated filter.
(opens in a new tab)Reference: FRM B737NG/MAX 12.1.1
Q.6.14. What is the primary concern when the Fuel FILTER BYPASS light is illuminated?
Engine flameout may occur.
(opens in a new tab)Reference: QRH B737NG 12.3, QRH B737MAX 12.4
Q.6.15. 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.
(opens in a new tab)Reference: FRM B737 MAX ,12.1.3; FRM B737 11.5.3
