Subject area A of 13
Reciprocating Engines
5-15% of the A&P Powerplant test, about 5 to 15 of the 100 questions. The FAA's test standard lists 10 knowledge elements and 4 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.A.K1Types of reciprocating engines.
- AM.III.A.K2Reciprocating engine operating principles/theory of operation.
- AM.III.A.K3Internal combustion engine operating principles/theory of operation.
- AM.III.A.K4Horizontally-opposed engine construction and internal components.
- AM.III.A.K5Radial engine construction and internal components.
- AM.III.A.K6Storage and preservation.
- AM.III.A.K7Reciprocating engine performance (e.g., PLANK, SFC).
- AM.III.A.K8Reciprocating engine maintenance and inspection.
- AM.III.A.K9Reciprocating engine ground operations.
- AM.III.A.K10Diesel engine operating principles/theory of operation.
Risk management: hazards you must be able to spot and manage
- AM.III.A.R1Maintenance that requires moving the propeller.
- AM.III.A.R2Preparation for and ground operation of a reciprocating engine.
- AM.III.A.R3Actions in the event of a reciprocating engine fire.
- AM.III.A.R4Use of other than manufacturer's procedures during maintenance.
Try a sample question
Reciprocating Engines ยท AM.III.A.K7
Refer to the figure. An engine with these performance curves is operated at its normal rated power. Approximately how many pounds of fuel does it burn per hour?
Practice all of reciprocating engines
The full course has questions on every element listed here, with an explanation and FAA source for each.