FAA · AMP
Aviation Mechanic Powerplant (AMP) Knowledge Test practice exams
The FAA's Powerplant knowledge test for the A&P mechanic certificate — practice against the Aviation Mechanic ACS, with every answer explained.
Or read 15 sample questions with answers.
About the AMP exam
The Aviation Mechanic Powerplant (AMP) test covers reciprocating and turbine engines and their systems: inspection, instruments, fire protection, electrical, lubrication, ignition and starting, fuel metering, induction and cooling, turbine air systems, exhaust and thrust reversers, and propellers.
The test follows Section III of the Aviation Mechanic ACS (FAA-S-ACS-1). These practice exams cover all thirteen powerplant subject areas in the proportions the FAA publishes.
The real exam
Public information published by FAA. A ExamWize practice exam matches this format — it is not a copy of the exam's contents.
- Format
- 100 multiple-choice questions in 2 hours, at an FAA airman knowledge testing center.
- Cost
- Testing fees are set by the testing center — check current pricing when you schedule.
- Scoring
- The minimum passing grade is 70 percent (14 CFR 65.17). Practice scores here use the same 70% pass line.
- Validity
- Passing the knowledge test is one step; the oral and practical tests complete the Powerplant rating.
Practice by exam topic
ExamWize practice exams draw questions in these same proportions, from a bank of 596 AMP questions. Open a topic for what it covers and free questions with answers.
- Reciprocating Engines· 75 questions12%
- Turbine Engines· 45 questions7%
- Engine Inspection· 41 questions7%
- Engine Instrument Systems· 43 questions7%
- Engine Fire Protection Systems· 41 questions7%
- Engine Electrical Systems· 62 questions11%
- Engine Lubrication Systems· 41 questions7%
- Ignition and Starting Systems· 44 questions7%
- Engine Fuel and Fuel Metering Systems· 43 questions7%
- Reciprocating Engine Induction and Cooling Systems· 43 questions7%
- Turbine Engine Air Systems· 37 questions7%
- Engine Exhaust and Reverser Systems· 39 questions7%
- Propellers· 42 questions7%
Who it's for
- Students at Part 147 aviation maintenance technician schools
- Mechanics qualifying for the Powerplant rating through practical experience
- Anyone retaking the AMP who wants to target weak subject areas
How to prepare
- Reciprocating engines and engine electrical systems carry the most weight — know engine theory, compression tests, generators and alternators.
- Learn magneto circuits, impulse couplings and turbine ignition safety.
- Know carburetor and fuel injection basics, plus turbine fuel nozzles and FADEC.
- Review propeller governors, feathering and blade stations.
See the free AMP cheat sheet for a one-page domain summary, and the content policy for how these questions are written.
Free AMP practice resources
- 15 free AMP practice questionsSpread across the exam's topics, each with the answer and an explanation for every option.
- Free 10-question diagnosticA quick, scored check of where you stand, with no account needed.
- AMP cheat sheetThe topics and the facts that come up most, on one page.
- AMP study guideHow to plan your preparation.
AMP exam FAQ
- What is the format of the AMP exam?
- 100 multiple-choice questions in 2 hours, at an FAA airman knowledge testing center.
- How much does the AMP exam cost?
- Testing fees are set by the testing center — check current pricing when you schedule.
- How is the AMP exam scored?
- The minimum passing grade is 70 percent (14 CFR 65.17). Practice scores here use the same 70% pass line.
- How long is the credential valid?
- Passing the knowledge test is one step; the oral and practical tests complete the Powerplant rating.
- How many AMP practice questions does ExamWize have?
- 596 original practice questions, drawn into full practice exams in the same format and domain proportions as the real AMP. Every option has its own explanation.
- Are these real AMP exam questions?
- No. Every question is original, written from FAA's public content outline — never copied from the real exam or from exam dumps. They match the real exam's format, not its contents.
- Can I try ExamWize for free?
- Yes. The free diagnostic has 10 AMP practice questions with a full explanation for every answer, and no account is needed.