Subject area J of 15
Aircraft Fuel Systems
5-10% of the A&P Airframe test, about 5 to 10 of the 100 questions. The FAA's test standard lists 9 knowledge elements and 5 risk management elements for this area. Here is every one, plus sample questions to try.
What the FAA tests
From the aviation mechanic test standard, FAA-S-ACS-1.
Knowledge: what you must know
- AM.II.J.K1Fuel system types.
- AM.II.J.K2Fuel system components, including filters and selector valves.
- AM.II.J.K3Aircraft fuel tanks/cells
- AM.II.J.K4Fuel flow.
- AM.II.J.K5Fuel transfer, fueling, and defueling.
- AM.II.J.K6Fuel jettisoning/dump systems.
- AM.II.J.K7Characteristics of fuel types.
- AM.II.J.K8Fuel system maintenance and inspection.
- AM.II.J.K9Fuel quantity indication.
Risk management: hazards you must be able to spot and manage
- AM.II.J.R1Fuel system maintenance.
- AM.II.J.R2Fuel system contamination.
- AM.II.J.R3Fuel spills.
- AM.II.J.R4Fuel system maintenance requiring fuel tank entry.
- AM.II.J.R5Defueling aircraft.
Try a sample question
Aircraft Fuel Systems ยท AM.II.J.K8
A fuel stain under a wing is wiped dry. Thirty minutes later the wetted area is about 2 inches in diameter and fuel is not dripping. How is this leak classified?
Practice all of aircraft fuel systems
The full course has questions on every element listed here, with an explanation and FAA source for each.