Airframe Mechanic Certification Airframe Inspection Procedures 2

Question 1

Which document defines the minimum inspection requirements for a 100-hour inspection on a certificated aircraft?

Accepted Answer

14 CFR Part 43, Appendix D

Answer

14 CFR Part 43, Appendix D lists the scope and detail of items to be included in annual and 100-hour inspections.

Question 2

When inspecting a fuselage skin for corrosion, which type is most difficult to detect because it forms beneath the surface?

Accepted Answer

Intergranular corrosion

Answer

Intergranular corrosion attacks grain boundaries beneath the surface and may not be visible until the metal blisters or delaminate.

Question 3

During a control surface inspection, you notice the hinge pin has 0.010 inch of lateral play. The manufacturer's limit is 0.005 inch. What is the correct action?

Accepted Answer

Replace the hinge assembly before returning to service

Answer

Exceeding manufacturer limits requires replacement before return to service; documenting and monitoring is not acceptable when a limit is exceeded.

Question 4

A mechanic performs a 100-hour inspection and discovers a cracked engine mount. Who must sign the return-to-service entry after the repair?

Accepted Answer

Any certificated A&P mechanic

Answer

An A&P mechanic may approve a repair for return to service; an IA is only required to approve the annual inspection itself.

Question 5

Which NDT method is best suited for detecting subsurface cracks in aluminum airframe structure without removing paint?

Accepted Answer

Eddy current inspection

Answer

Eddy current inspection can detect subsurface flaws in non-ferrous metals through paint and coatings without removal.

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Airframe Inspection Procedures 2