Airframe Mechanic Certification Exam (FAA)
– 100 Questions, Answers, & Rationales
1. Which component is designed to carry flight and ground loads on
the fuselage?
A. Skin panels
B. Longerons
C. Floor beams
D. Stringers
Longerons provide the main longitudinal structural support for the
fuselage, carrying major loads.
2. What is the primary purpose of a bulkhead in an aircraft fuselage?
A. Reduce drag
B. Hold hydraulic components
C. Provide structural rigidity and shape
D. Connect wing spars
Bulkheads act as structural frames to maintain fuselage shape and
distribute stresses.
3. The most common alloy used in aircraft rivets such as AD rivets is:
A. 5052 aluminum
B. 2117 aluminum
C. 6061 aluminum
D. Titanium alloy
,2117 is heat-treated, corrosion-resistant, and widely used for general
airframe riveting.
4. What type of stress is a wing spar primarily subjected to during
flight?
A. Torsion
B. Bending stress
C. Shear stress
D. Compression only
Wing lift creates upward bending forces resisted by the spar.
5. A cherrymax rivet is classified as what type of fastener?
A. Solid rivet
B. Blind rivet
C. Friction-lock rivet
D. Taper-lock pin
Cherrymax rivets are blind fasteners used where only one side is
accessible.
6. Which inspection method can detect surface cracks in aluminum
but not internal flaws?
A. Eddy current
B. Dye penetrant
C. Ultrasound
D. X-ray
Dye penetrant reveals surface-breaking defects only.
, 7. The ideal shop head diameter of a driven solid rivet should be
approximately:
A. 1 diameter of shank
B. 1.5 diameters of shank
C. 2 diameters of shank
D. 0.5 diameters
Standard rivet manuals require ~1.5× shank diameter for proper
strength.
8. What type of corrosion appears as a white, powdery deposit on
aluminum?
A. Galvanic
B. Intergranular
C. Surface corrosion
D. Filiform
Aluminum oxidizes to a white powder, indicating surface corrosion.
9. Which material is used to repair honeycomb composite structures?
A. Pure aluminum sheet
B. Pre-preg composite patches
C. Titanium plates
D. Magnesium sheet
Composite honeycomb requires compatible resin-impregnated
composite repair materials.
10. What is the primary advantage of semi-monocoque construction?
– 100 Questions, Answers, & Rationales
1. Which component is designed to carry flight and ground loads on
the fuselage?
A. Skin panels
B. Longerons
C. Floor beams
D. Stringers
Longerons provide the main longitudinal structural support for the
fuselage, carrying major loads.
2. What is the primary purpose of a bulkhead in an aircraft fuselage?
A. Reduce drag
B. Hold hydraulic components
C. Provide structural rigidity and shape
D. Connect wing spars
Bulkheads act as structural frames to maintain fuselage shape and
distribute stresses.
3. The most common alloy used in aircraft rivets such as AD rivets is:
A. 5052 aluminum
B. 2117 aluminum
C. 6061 aluminum
D. Titanium alloy
,2117 is heat-treated, corrosion-resistant, and widely used for general
airframe riveting.
4. What type of stress is a wing spar primarily subjected to during
flight?
A. Torsion
B. Bending stress
C. Shear stress
D. Compression only
Wing lift creates upward bending forces resisted by the spar.
5. A cherrymax rivet is classified as what type of fastener?
A. Solid rivet
B. Blind rivet
C. Friction-lock rivet
D. Taper-lock pin
Cherrymax rivets are blind fasteners used where only one side is
accessible.
6. Which inspection method can detect surface cracks in aluminum
but not internal flaws?
A. Eddy current
B. Dye penetrant
C. Ultrasound
D. X-ray
Dye penetrant reveals surface-breaking defects only.
, 7. The ideal shop head diameter of a driven solid rivet should be
approximately:
A. 1 diameter of shank
B. 1.5 diameters of shank
C. 2 diameters of shank
D. 0.5 diameters
Standard rivet manuals require ~1.5× shank diameter for proper
strength.
8. What type of corrosion appears as a white, powdery deposit on
aluminum?
A. Galvanic
B. Intergranular
C. Surface corrosion
D. Filiform
Aluminum oxidizes to a white powder, indicating surface corrosion.
9. Which material is used to repair honeycomb composite structures?
A. Pure aluminum sheet
B. Pre-preg composite patches
C. Titanium plates
D. Magnesium sheet
Composite honeycomb requires compatible resin-impregnated
composite repair materials.
10. What is the primary advantage of semi-monocoque construction?
