Practice Exam Questions And Correct

FAA Airframe Mechanic Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of a stall warning device on an aircraft?
• To prevent overspeed
• To indicate engine failure
• To alert the pilot of an impending stall
• To measure airspeed

Rationale: The stall warning device alerts the pilot when the aircraft

approaches a stall, giving time to correct the flight attitude.

• Which type of corrosion results from dissimilar metals in contact in the

presence of an electrolyte?

• Uniform corrosion 1 / 4

• Pitting corrosion
• Galvanic corrosion
• Intergranular corrosion

Rationale: Galvanic corrosion occurs when two dissimilar metals are

electrically connected in a conductive environment, causing one metal to corrode faster.

• What is the purpose of a trim tab on a control surface?
• To provide primary lift
• To increase drag
• To reduce pilot control forces
• To actuate the landing gear

Rationale: Trim tabs are used to maintain control balance, reducing the

force required by the pilot to hold a certain control position.

• In aircraft hydraulic systems, what is the primary function of a reservoir?
• To pressurize the system
• To store hydraulic fluid and allow expansion
• To filter contaminants
• To regulate temperature

Rationale: The hydraulic reservoir stores fluid, allows for expansion and

contraction, and provides a place for air to separate from the fluid.

• Which NDT method uses high-frequency sound waves to detect internal

flaws?

• Magnetic particle inspection 2 / 4

• Eddy current
• Ultrasonic inspection
• Dye penetrant

Rationale: Ultrasonic inspection uses sound waves to detect internal

defects such as cracks or voids within materials.

• What is the correct angle of incidence?
• The angle between the horizontal stabilizer and fuselage
• The angle of climb
• The angle between the wing chord line and the longitudinal axis of the

aircraft

• The angle of attack during cruise

Rationale: The angle of incidence is fixed and represents the angle

between the wing chord line and the aircraft’s longitudinal axis.

• Which type of rivet is most commonly used in aircraft structural

assemblies?

• Huck rivet
• Solid rivet
• Universal head solid rivet
• Blind rivet

Rationale: Universal head solid rivets are standard in aircraft construction

due to their strength and suitability for structural connections.

• What is the function of a control horn?
• To measure control surface deflection 3 / 4

• To transmit control forces from cables or rods to the surface
• To reduce aerodynamic drag
• To stabilize the aircraft

Rationale: Control horns are attachment points for cables or push-pull rods

that move the control surfaces.

• Which type of inspection is required after a major structural repair on an

aircraft?

• 100-hour inspection
• Detailed post-repair inspection
• Pre-flight inspection
• Annual inspection

Rationale: After major repairs, a detailed inspection ensures structural

integrity and compliance with approved methods.

• What is the main purpose of a firewall in an aircraft?
• To improve aerodynamics
• To reduce vibration
• To separate the engine compartment from the cockpit for fire

protection

• To mount instruments

Rationale: Firewalls are barriers designed to protect the pilot and critical

systems from engine fires.

• What does the term “creep” refer to in metals?
• Sudden fracture under load
• / 4