Certification Exam Practice Questions

Aircraft Sheet Metal Technician Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of aircraft sheet metal work?
• To improve engine efficiency
• To provide structural integrity and aerodynamic shape
• To reduce pilot workload
• To enhance avionics performance

Rationale: Sheet metal work ensures the aircraft maintains structural

strength while achieving proper aerodynamic design.

• Which material is commonly used in aircraft sheet metal construction?
• Steel
• Copper 1 / 4

• Aluminum alloys
• Lead

Rationale: Aluminum alloys are lightweight, strong, and corrosion-

resistant, making them ideal for aircraft structures.

• What is the typical thickness range for aircraft sheet metal skin?
• 0.1 to 0.5 mm
• 0.5 to 1 mm
• 0.8 to 3 mm
• 3 to 6 mm

Rationale: Aircraft skins are generally thin, between 0.8 mm and 3 mm, to

balance strength and weight.

• What tool is used to measure sheet metal thickness?
• Ruler
• Micrometer
• Calipers
• Protractor

Rationale: Calipers and micrometers provide precise measurements of

sheet metal thickness.

• What type of rivet is used when access is only available from one side

of the sheet?

• Solid rivet
• Blind rivet 2 / 4

• Drive rivet
• Split rivet

Rationale: Blind rivets (pop rivets) can be installed from one side, ideal for

inaccessible areas.

• Which rivet installation method is commonly used for structural

applications?

• Screw rivet
• Solid rivet with bucking
• Blind rivet
• Pop rivet

Rationale: Solid rivets installed with a bucking bar provide strong

permanent joints for critical structures.

• What is the purpose of annealing aluminum sheet metal?
• To harden it
• To soften it for forming
• To increase corrosion resistance
• To clean the surface

Rationale: Annealing softens aluminum, making it easier to bend or shape

without cracking.

• Which type of bend allows a sheet metal edge to be folded back onto

itself?

• V-bend 3 / 4

• U-bend
• Flange bend
• Corner bend

Rationale: A flange bend folds the edge of a sheet metal part back, adding

strength and stiffness.

• What is the purpose of a dimple in sheet metal?
• For decoration
• To countersink a flush-head fastener
• To reduce weight
• To increase rigidity

Rationale: Dimples allow flush rivets or screws to sit flush with the surface.

• Which of the following is a common method for joining

aluminum sheets?

• Welding only
• Riveting and adhesive bonding
• Soldering only
• Brazing only

Rationale: Aluminum sheets are commonly joined using rivets or structural

adhesives, as welding can weaken thin sections.

• What is the main hazard when working with sheet metal?
• Noise
• Radiation
• / 4