FAA aviation maintenance technician powerplant knowledge test study guide
Aligned to FAA-S-ACS-1 Aviation Mechanic General, Airframe, and Powerplant ACS and the FAA Airman Knowledge Testing Matrix revised October 22, 2025
601 practice questions
130 flashcards
Completely free

FAA Aviation Maintenance Technician Powerplant Test Prep

Practice reciprocating engines, turbine engines, engine inspection, engine instruments, fire protection, engine electrical systems, lubrication, ignition, starting, fuel metering, induction, cooling, exhaust, reversers, propellers, and APUs with 601 original questions.

601 original questions
Official-outline mapped
100-question mocks

Most popular

Start with free practice questions

Jump into a mixed set drawn from 601 free practice questions.

Free Practice Questions

Exam structure

Know the split before you start drilling

Reciprocating Engines

1 items

1 scored + 0 pretest

Turbine Engines

1 items

1 scored + 0 pretest

Engine Inspection

1 items

1 scored + 0 pretest

Engine Instrument Systems

1 items

1 scored + 0 pretest

Engine Fire Protection

1 items

1 scored + 0 pretest

Engine Electrical Systems

1 items

1 scored + 0 pretest

Engine Lubrication Systems

1 items

1 scored + 0 pretest

Ignition and Starting

1 items

1 scored + 0 pretest

Fuel and Fuel Metering

1 items

1 scored + 0 pretest

Induction, Airflow and Cooling

1 items

1 scored + 0 pretest

Exhaust and Reverser Systems

1 items

1 scored + 0 pretest

Propellers

1 items

1 scored + 0 pretest

Auxiliary Power Units

1 items

1 scored + 0 pretest

Question bank

601

Generated across FAA-S-ACS-1 Powerplant subjects.

Knowledge test

100 questions

The FAA matrix lists AMP Aviation Maintenance Technician Powerplant as a 100-question test.

Time limit

2.0 hours

The FAA Airman Knowledge Testing Matrix lists two hours for AMP.

Passing score

70%

The matrix lists 70 as the passing score for AMP.

Main ACS subjects

13

Powerplant engine, system, propeller, and APU subjects grouped for practice.

Flashcards

130

Ten targeted cards per Powerplant subject group.

Start here

How to study FAA Powerplant

Use this order for a clean Powerplant pass.

1

1. Start with engine theory and inspection

Drill reciprocating, turbine, engine inspection, and instrument-system questions before moving into accessories.

2

2. Build system troubleshooting

Practice fire protection, electrical, lubrication, ignition, fuel metering, induction, cooling, and exhaust scenarios.

3

3. Finish with rotating and support systems

Use 100-question mocks, then review misses in propeller, reverser, and APU topics.

About the exam

Aviation Maintenance Technician Powerplant Exam structure

FAA Aviation Maintenance Technician Powerplant Test Prep with 601 original practice questions, flashcards, weighted mocks, and safety-focused recovery drills.

Issuer and path

FAA Aviation Maintenance Technician Powerplant Test Prep is administered through Federal Aviation Administration. Check official resources before booking, retesting, or relying on a stale requirement.

Reciprocating Engines

1 items

1 scored + 0 pretest

Engine theory, cylinders, crankshafts, valves, compression, overhaul, inspection, troubleshooting, and operating limits.

Turbine Engines

1 items

1 scored + 0 pretest

Compressors, combustors, turbines, bearings, hot section, starts, trend monitoring, inspection, and engine limits.

Engine Inspection

1 items

1 scored + 0 pretest

Condition checks, records, ADs, service limits, leak checks, runups, preservation, and return-to-service decisions.

Engine Instrument Systems

1 items

1 scored + 0 pretest

Pressure, temperature, RPM, torque, fuel flow, EGT, CHT, sensors, wiring, calibration, and indications.

Engine Fire Protection

1 items

1 scored + 0 pretest

Detection loops, warning circuits, extinguishing bottles, discharge systems, fire zones, tests, and safety handling.

Engine Electrical Systems

1 items

1 scored + 0 pretest

Generators, alternators, starters, wiring, bonding, batteries, starter-generators, FADEC power, and troubleshooting.

Engine Lubrication Systems

1 items

1 scored + 0 pretest

Oil types, wet and dry sump systems, coolers, filters, chip detectors, pressure, temperature, servicing, and troubleshooting.

Ignition and Starting

1 items

1 scored + 0 pretest

Magnetos, spark plugs, ignition harnesses, turbine ignition, starters, impulse couplings, timing, and safety.

Fuel and Fuel Metering

1 items

1 scored + 0 pretest

Carburetors, fuel injection, turbine fuel controls, pumps, nozzles, filters, lines, drains, adjustments, and leak hazards.

Induction, Airflow and Cooling

1 items

1 scored + 0 pretest

Air intakes, filters, carburetor heat, turbocharging, supercharging, intercooling, baffles, cowling, and turbine cooling air.

Exhaust and Reverser Systems

1 items

1 scored + 0 pretest

Reciprocating exhaust, turbine exhaust, mufflers, heat exchangers, noise suppression, thrust reversers, leaks, and fire hazards.

Propellers

1 items

1 scored + 0 pretest

Fixed-pitch, constant-speed, governors, feathering, reversing, blade inspection, tracking, balancing, repairs, and safety.

Auxiliary Power Units

1 items

1 scored + 0 pretest

APU operation, starting, fuel, oil, fire protection, electrical output, bleed air, inspection, and servicing.

Before scheduling

Check the current FAA testing matrix, confirm your FAA Form 8610-2 or AMTS authorization, identification, and testing-provider rules before booking AMP.

Official Outline Coverage Map

Coverage is mapped to official outline item counts so content depth can be checked without hard-coding a single exam.

Official outline
TopicOfficial outline itemsYour questionsYour flashcardsConfidence
Powerplant Reciprocating Engines14710
Priority
Powerplant Turbine Engines14710
Priority
Powerplant Engine Inspection14710
Priority
Powerplant Engine Instrument Systems14610
Good
Powerplant Engine Fire Protection14610
Priority
Powerplant Engine Electrical Systems14610
Priority
Powerplant Engine Lubrication Systems14610
Priority
Powerplant Ignition and Starting14610
Priority
Powerplant Fuel and Fuel Metering14610
Priority
Powerplant Induction, Airflow and Cooling14610
Priority
Powerplant Exhaust and Reverser Systems14610
Priority
Powerplant Propellers14610
Priority
Powerplant Auxiliary Power Units14610
Good

How to use this guide

How to study FAA Powerplant

Build each answer around engine safety and approved data: identify the engine system, verify limits and indications, control fire or stored-energy hazards, inspect before adjusting, and document the return-to-service decision.

1. Identify the engine system

Decide whether the item is about engine core, fuel, oil, ignition, electrical, fire, airflow, exhaust, propeller, or APU operation.

2. Verify limits and indications

Use pressure, temperature, RPM, torque, EGT, CHT, fuel-flow, and manufacturer limits before adjusting or replacing parts.

3. Control fire and stored-energy risk

Handle fuel, ignition, starters, batteries, pressure, hot sections, and rotating parts with the safest approved sequence.

4. Inspect before return to service

Choose the action that completes troubleshooting, inspection, operational check, recordkeeping, and return-to-service authority.

Powerplant Reciprocating Engines
Recip

Powerplant Reciprocating Engines

Reciprocating-engine questions test engine theory, cylinders, crankshafts, valves, compression, overhaul, inspection, troubleshooting, and operating limits.

Key rules

Rule 1

Powerplant Reciprocating Engines questions reward the answer that follows the official rule source, safety duty, and practical work sequence.

Exam cue: Identify the system, hazard, tool, code rule, or licensing duty being tested.

Rule 2

The strongest answer controls the hazard before continuing work, testing equipment, or documenting completion.

Exam cue: Check inspection, isolation, measurement, documentation, and environmental requirements.

Rule 3

Eliminate answers that ignore inspection, code clearance, environmental controls, lockout, labeling, or qualification limits.

Exam cue: Choose the safe compliant answer before the fastest production answer.

Common traps

Treating local, state, and federal rules as interchangeable.

Prevention: Avoid answers that skip inspection, ignore the code source, energize unsafe equipment, vent regulated material, or treat local rules as optional.

Skipping required inspection, isolation, documentation, or recovery steps.

Prevention: Avoid answers that skip inspection, ignore the code source, energize unsafe equipment, vent regulated material, or treat local rules as optional.

Choosing a convenient answer that exceeds the worker's qualification or equipment rating.

Prevention: Avoid answers that skip inspection, ignore the code source, energize unsafe equipment, vent regulated material, or treat local rules as optional.

Memory anchors

Four Stroke

A four-stroke cycle uses intake, compression, power, and exhaust events.

Compression Check

Compression testing helps evaluate cylinder sealing, valves, rings, and leakage path.

Valve Train

Valve clearance, timing, springs, guides, and seats affect power and reliability.

Crankcase Inspection

Crankcases are inspected for cracks, fretting, corrosion, bearing support, and oil leaks.

Cylinder Condition

Cylinder inspection checks fins, barrel wear, scoring, cracks, valves, and spark plug threads.

Engine Timing

Correct valve and ignition timing is essential for power, temperature, and detonation margin.

Break In

Engine break-in follows manufacturer power, temperature, and oil recommendations.

Overhaul Limits

Overhaul decisions use manufacturer's limits, measurements, service history, and condition.

Detonation Preignition

Detonation and preignition can rapidly damage pistons, valves, plugs, and cylinders.

Runup Clues

Roughness, pressure changes, temperature trends, and abnormal vibration guide troubleshooting.

Next best moves

Quick check-up

Use a short quiz to confirm the rule pattern is actually sticking.

Check-up Questions

1-2 question checkpoint

In a four-stroke reciprocating engine, which event occurs while the piston moves upward with both valves closed?

A cylinder has a swept volume of 72 cubic inches and a clearance volume of 8 cubic inches. What is its compression ratio?

Answer all questions to submit.

Next step personalized recommendations

Open another topic next

Official resources

Verify the details with the official sources

Use these links for eligibility, scheduling, handbook rules, and issuer updates. Our guide helps you study; official sources tell you what the testing partner currently requires.

FAQ

Common Aviation Maintenance Technician Powerplant questions

How many questions are on the FAA Powerplant knowledge test?

The FAA Airman Knowledge Testing Matrix lists AMP Aviation Maintenance Technician Powerplant as 100 questions with a two-hour time limit and a passing score of 70.

What official outline does this follow?

This bank follows FAA-S-ACS-1, the Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards, using the Powerplant subjects as the coverage map.

What should I study first?

Start with reciprocating engines, turbine engines, inspection, lubrication, ignition, fuel metering, and engine electrical systems before drilling propellers, exhaust, and APUs.

Does this replace FAA source material or AMTS instruction?

No. Use it as a practice layer alongside current FAA ACS documents, the testing matrix, maintenance handbooks, approved engine data, and instructor guidance.

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