Subject area I of 13
Engine Fuel and Fuel Metering Systems
5-10% of the A&P Powerplant test, about 5 to 10 of the 100 questions. The FAA's test standard lists 16 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.III.I.K1Fuel/air ratio and fuel metering, and carburetor theory and operation.
- AM.III.I.K2Float carburetor theory, components, operation, and adjustment.
- AM.III.I.K3Pressure carburetor theory, operation, and adjustment.
- AM.III.I.K4Continuous-flow fuel injection theory, components, operation, troubleshooting and adjustment.
- AM.III.I.K5Digital engine control module (e.g., FADEC).
- AM.III.I.K6Hydromechanical fuel control system design and components.
- AM.III.I.K7Fuel nozzles and manifolds design, operation, and maintenance.
- AM.III.I.K8Components, theory, and operation of turbine engine fuel metering system.
- AM.III.I.K9Inspection requirements for an engine fuel system.
- AM.III.I.K10Fuel system operation.
- AM.III.I.K11Fuel heaters.
- AM.III.I.K12Fuel lines.
- AM.III.I.K13Fuel pumps.
- AM.III.I.K14Fuel valves.
- AM.III.I.K15Fuel filters.
- AM.III.I.K16Engine fuel drains.
Risk management: hazards you must be able to spot and manage
- AM.III.I.R1Adjusting a turbine engine fuel control.
- AM.III.I.R2Adjusting reciprocating engine fuel control systems.
- AM.III.I.R3Handling of fuel metering system components that may contain fuel.
- AM.III.I.R4Considerations during fuel system maintenance.
- AM.III.I.R5Handling of engine fuel control units that may contain fuel.
Try a sample question
Engine Fuel and Fuel Metering Systems ยท AM.III.I.K4
In the Continental continuous-flow fuel injection pump, what happens to fuel vapor that arrives at the pump inlet?
Practice all of engine fuel and fuel metering systems
The full course has questions on every element listed here, with an explanation and FAA source for each.