A&P General Practice Test: FAA Aviation Mechanic Written Exam

70 practice questions on electricity, drawings, weight and balance, hardware, corrosion, regulations, inspection and human factors, one topic list straight from the FAA's own Airman Certification Standards. We wrote every question from the FAA handbook, and each answer links the handbook page it comes from. The real General test is 60 questions at 70%.

The real test: 60 questions. 42 right (70%) passes.

Passing score: FAA knowledge test passing score (70%), the codes on your test report, and retesting

Here: 70 questions. Our own practice questions, written from the FAA's Aviation Maintenance Technician Handbook (FAA-H-8083-30B), a U.S. government work. Topics follow the Aviation Mechanic ACS (FAA-S-ACS-1). Not the FAA's test questions. Free.

What's on the test

10 sample questions

1. In a series circuit, how do you find the total resistance?

   • A.Add the individual resistances together
   • B.Use the smallest resistance in the circuit
   • C.Multiply the individual resistances together
   • D.Divide the source voltage by the number of resistors
   Show answer

   A. Add the individual resistances together

   AMG-1 · Electricity and electronics · FAA-H-8083-30B, PDF page 99

2. On an aircraft drawing, what do hidden lines look like?

   • A.A heavy solid line
   • B.A thin line with an arrowhead
   • C.Short dashes, evenly spaced
   • D.One long and two short dashes
   Show answer

   C. Short dashes, evenly spaced

   AMG-13 · Aircraft drawings · FAA-H-8083-30B, PDF page 141

3. What is the datum in weight and balance?

   • A.The heaviest point on the aircraft
   • B.The point where the main wheels touch the scale, which the manufacturer uses as the zero for every arm
   • C.An imaginary vertical plane from which all horizontal measurements are taken
   • D.The aircraft's center of gravity
   Show answer

   C. An imaginary vertical plane from which all horizontal measurements are taken

   AMG-18 · Weight and balance · FAA-H-8083-30B, PDF page 213

4. What flare angle does an aircraft tube flaring tool produce?

   • A.30°
   • B.60°
   • C.35° to 37°
   • D.45°
   Show answer

   C. 35° to 37°

   AMG-24 · Fluid lines and fittings · FAA-H-8083-30B, PDF page 357

5. What is Alclad?

   • A.Aluminum with a magnesium coating, which sacrifices itself to protect the sheet from corrosion
   • B.An aluminum-alloy core coated with a layer of pure aluminum
   • C.An anodized aluminum sheet
   • D.Steel coated with cadmium
   Show answer

   B. An aluminum-alloy core coated with a layer of pure aluminum

   AMG-28 · Materials, hardware and processes · FAA-H-8083-30B, PDF page 265

6. What color is 100LL aviation gasoline?

   • A.Green
   • B.Red
   • C.Purple
   • D.Blue
   Show answer

   D. Blue

   AMG-36 · Ground operations and servicing · FAA-H-8083-30B, PDF page 47

7. Filiform corrosion is recognized by:

   • A.Fine cracks at a stressed fitting
   • B.Lifting layers of metal along the grain, with white powder between the layers
   • C.Wormlike traces of corrosion under the paint film
   • D.White, snow-like mounds
   Show answer

   C. Wormlike traces of corrosion under the paint film

   AMG-42 · Cleaning and corrosion control · FAA-H-8083-30B, PDF page 329

8. What is the formula for the area of a circle?

   • A.A = r² ÷ π
   • B.A = π × d
   • C.A = 2 × π × r
   • D.A = π × r²
   Show answer

   D. A = π × r²

   AMG-48 · Mathematics · FAA-H-8083-30B, PDF page 108

9. What FAA form is used to record a major repair or major alteration?

   • A.FAA Form 8710-1
   • B.FAA Form 337
   • C.FAA Form 8130-3
   • D.FAA Form 8610-2
   Show answer

   B. FAA Form 337

   AMG-53 · Regulations, forms and records · FAA-H-8083-30B, PDF page 64

10. What is standard day atmospheric pressure?

    • A.29.92 psi
    • B.1,000 psi
    • C.14.7 inches of mercury, or 29.92 psi at the standard temperature of 59 °F
    • D.14.7 psi, or 29.92 inches of mercury
    Show answer

    D. 14.7 psi, or 29.92 inches of mercury

    AMG-59 · Physics for aviation · FAA-H-8083-30B, PDF page 171

What the study guide does

• Short study rounds and flip cards.
• A practice test built like the real one: 60 questions, 42 to pass.
• Pass Meter: your chance of passing if you sat the test today, worked out from your own answers.
• An explanation for every answer.