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150+ Free FAA A&P Mechanic Practice Questions

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In a basic DC circuit, current is defined as the movement of what through a conductor?

A
B
C
D
to track
2026 Statistics

Key Facts: FAA A&P Mechanic Exam

3 tests

AMG + AMA + AMP

FAA testing matrix

260

Total Knowledge Questions

60 + 100 + 100

70%

Passing Score

Each test

18 / 30 mos

Experience Path

FAA mechanic eligibility

PSI

Current Fee Source

FAA directs applicants to PSI

Apr 14, 2026

Embedded Images Start

FAA community advisory

As of 2026-03-12, the FAA still requires three separate aviation mechanic knowledge tests: AMG General (60 questions), AMA Airframe (100), and AMP Powerplant (100), with 2 hours allotted for each and a 70% passing score on each test. The FAA does not publish a single fixed AMT knowledge-test price on its mechanic page and instead directs applicants to PSI for current fees; certain JSAMTCC/MOA-eligible military applicants may test at no cost. FAA's February 2026 Airman Testing Community Advisory also announced embedded images for airman knowledge tests beginning April 14, 2026, but no new mechanic-specific ACS content change was identified.

Sample FAA A&P Mechanic Practice Questions

Try these sample questions to test your FAA A&P Mechanic exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 150+ question experience with AI tutoring.

1In a basic DC circuit, current is defined as the movement of what through a conductor?
A.Neutrons
B.Protons
C.Electrons
D.Magnetic flux lines
Explanation: In electrical theory, current in a conductor results from the movement of electrons. Conventional current is drawn from positive to negative, but the actual electron flow is from negative to positive. FAA mechanic questions often expect you to understand both descriptions.
2A mechanic measures 24 volts across a load and 6 amps flowing through it. What is the resistance of the load?
A.2 ohms
B.4 ohms
C.6 ohms
D.30 ohms
Explanation: Ohm's Law states that resistance equals voltage divided by current. Dividing 24 volts by 6 amps gives 4 ohms. Questions like this test whether you can apply the relationship rather than just memorize the formula.
3What happens to total resistance when resistors are added in series?
A.It decreases below the smallest resistor value
B.It becomes zero if the circuit is complete
C.It equals the sum of the individual resistances
D.It stays the same as the first resistor
Explanation: In a series circuit, the current has only one path, so each resistor adds to the total opposition. The total series resistance is the arithmetic sum of the individual resistances. That is different from a parallel circuit, where total resistance decreases.
4Compared with a series circuit, adding another branch in parallel will usually have what effect on total circuit resistance?
A.Increase it
B.Decrease it
C.Leave it unchanged
D.Reverse the polarity
Explanation: Each additional parallel branch gives current another path to follow. That reduces total resistance and increases total current draw from the source if voltage remains the same. A common FAA trap is reversing the effect of series and parallel additions.
5Which component resists a change in current flow by storing energy in a magnetic field?
A.Capacitor
B.Inductor
C.Rectifier
D.Thermocouple
Explanation: An inductor stores energy in a magnetic field and opposes changes in current. A capacitor stores energy in an electric field and opposes changes in voltage. Understanding that distinction is fundamental to troubleshooting aircraft electrical and electronic systems.
6Which instrument is connected across a component to measure electrical potential difference?
A.Ammeter
B.Voltmeter
C.Ohmmeter
D.Frequency meter
Explanation: A voltmeter is placed in parallel with the component whose voltage drop is being measured. An ammeter is placed in series so the circuit current flows through it. Using the wrong connection can damage the meter or produce a false reading.
7In aircraft wiring, what is generally true about American Wire Gauge numbers?
A.Higher numbers indicate larger diameter wire
B.Lower numbers indicate larger diameter wire
C.All gauge numbers represent the same current capacity
D.Gauge numbers only apply to shielded wire
Explanation: With AWG sizing, the lower the gauge number, the larger the wire diameter. Larger wire can carry more current with less voltage drop. Mechanics need this principle when comparing replacement wire to the original installation requirements.
8On an aircraft drawing, what type of line is commonly used to show hidden edges or surfaces not directly visible in the view?
A.Centerline
B.Phantom line
C.Dashed hidden line
D.Dimension line
Explanation: Hidden lines are typically shown as short dashes and represent edges not directly visible in the selected view. Centerlines indicate axes or centers, and dimension lines show measurements. Interpreting drawing line conventions is essential before fabricating or inspecting parts.
9What does an aircraft drawing's revision block primarily tell the mechanic?
A.The weight of the finished part
B.The approved changes made to the drawing over time
C.The physical location of the part on the aircraft
D.The required inspection interval for the part
Explanation: The revision block documents drawing changes, including revision letters or numbers and a brief description of what changed. Mechanics use it to verify they are working from the current drawing issue. Missing a revision can lead to installing a part or configuration that is no longer approved.
10In weight and balance terminology, the arm of an item is the distance from the datum to the item's what?
A.Center of pressure
B.Geometric centerline
C.Center of gravity
D.Moment index
Explanation: The arm is the horizontal distance from the reference datum to the center of gravity of the item. That arm is multiplied by the item's weight to produce its moment. Mechanics use the same relationship when calculating aircraft loading changes after maintenance or equipment installation.

About the FAA A&P Mechanic Exam

The FAA A&P mechanic path combines the Aviation Maintenance Technician General, Airframe, and Powerplant knowledge tests that feed into the oral and practical certification process. The written tests cover core maintenance math and electricity, aircraft structures and systems, and reciprocating/turbine powerplant inspection, operation, and troubleshooting.

Assessment

3 separate knowledge tests: AMG General (60), AMA Airframe (100), AMP Powerplant (100)

Time Limit

2 hours per test (6 hours total)

Passing Score

70% on each knowledge test

Exam Fee

Contact PSI for current fee (FAA / PSI)

FAA A&P Mechanic Exam Content Outline

23.1%

General

Electricity and electronics, drawings, weight and balance, fluid lines, materials and hardware, servicing, corrosion control, math, regulations, inspection concepts, and human factors.

38.5%

Airframe

Metallic and non-metallic structures, flight controls, landing gear, hydraulics and pneumatics, environmental systems, instruments, communications and lighting, airframe fuel and electrical systems, and ice, rain, and fire protection.

38.5%

Powerplant

Reciprocating and turbine engines, engine inspection, instrumentation, fire protection, engine electrical systems, lubrication, ignition and starting, fuel metering, induction and cooling, turbine air systems, exhaust and thrust reversers, and propellers.

How to Pass the FAA A&P Mechanic Exam

What You Need to Know

  • Passing score: 70% on each knowledge test
  • Assessment: 3 separate knowledge tests: AMG General (60), AMA Airframe (100), AMP Powerplant (100)
  • Time limit: 2 hours per test (6 hours total)
  • Exam fee: Contact PSI for current fee

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

FAA A&P Mechanic Study Tips from Top Performers

1Study to the official three-part structure first: General, Airframe, and Powerplant.
2Memorize weight and balance logic, electrical fundamentals, and maintenance record rules because they recur across many scenarios.
3Use drawings, system schematics, and troubleshooting flows instead of memorizing isolated facts.
4Drill structures and systems separately from engines so you do not blur airframe and powerplant concepts.
5Practice scenario questions that force you to choose the safest maintenance action, not just the right definition.
6Before scheduling, aim to pass mixed practice blocks consistently across all three domains, not just your strongest section.

Frequently Asked Questions

How is the FAA A&P knowledge testing path structured?

The FAA mechanic path uses three separate multiple-choice knowledge tests: AMG General, AMA Airframe, and AMP Powerplant. You must pass the applicable knowledge test or tests before moving to the oral and practical exams with a Designated Mechanic Examiner.

What score do I need to pass the FAA A&P written exams?

You need 70% on each individual knowledge test. The current FAA testing matrix lists AMG at 60 questions, AMA at 100 questions, and AMP at 100 questions, with 2 hours allotted to each test.

What are the eligibility requirements for the FAA A&P mechanic certificate?

The FAA says applicants must be at least 18 years old and able to read, write, speak, and understand English. You must also qualify by experience or training, such as 18 months for a single rating, 30 months of concurrent airframe and powerplant experience, graduating from an FAA-approved AMTS, or using the JSAMTCC military pathway.

How much does the FAA A&P knowledge testing path cost?

The FAA mechanic page states that AMT knowledge tests are administered through commercial FAA-approved testing centers and directs applicants to PSI for current fees. The same page also notes that some JSAMTCC/MOA-eligible military applicants may take the AMT knowledge tests at no cost.

What changed for FAA mechanic testing in 2026?

FAA's February 2026 Airman Testing Community Advisory announced that airman knowledge tests will begin using embedded images on April 14, 2026. I did not find a new 2026 mechanic-specific ACS or knowledge-test blueprint change beyond that test-delivery update.

How long should I study for the FAA A&P written exams?

Study time depends heavily on your background. Candidates coming from an FAA-approved AMTS often spend 80 to 120 focused review hours across the three written tests, while experience-path applicants frequently need 120 to 180 hours to refresh structures, systems, engine theory, and recordkeeping details before scheduling.