A&P Airframe Structures and Repair Questions and Answers

Question 1

A technician discovers a small, localized area of corrosion on an aluminum alloy surface characterized by small holes or cavities.
When the white-gray powdery deposit is removed, tiny pits are visible.
What type of corrosion is this?

Accepted Answer

Pitting corrosion

Answer

Filiform corrosion

Answer

Intergranular corrosion

Answer

Galvanic corrosion

Question 2

When performing a repair on a composite structure, a technician uses a scarf patch. What is the primary advantage of a scarf repair compared to an external patch repair?

Accepted Answer

It provides a smooth, aerodynamic surface and efficient load transfer.

Answer

It is faster and easier to perform.

Answer

It uses significantly less adhesive.

Answer

It requires less specialized equipment for curing.

Question 3

A maintenance technician needs to install a solid shank rivet with the identification code AN470AD4-8. What does the '4' in this code represent?

Accepted Answer

The rivet diameter in thirty-seconds of an inch.

Answer

The rivet length in eighths of an inch.

Answer

The head style.

Answer

The material alloy.

Question 4

What is the primary structural difference between a monocoque and a semi-monocoque fuselage construction?

Accepted Answer

Semi-monocoque fuselages use a substructure of stringers and formers to reinforce the skin.

Answer

Monocoque fuselages are exclusively made of composite materials.

Answer

Semi-monocoque fuselages rely solely on the skin to carry all structural loads.

Answer

Monocoque fuselages use a steel tube truss for primary strength.

Question 5

A technician finds a crack in a non-critical aluminum skin panel during an inspection. As a temporary repair to prevent the crack from propagating, what is the most appropriate immediate action?

Accepted Answer

Stop-drill the ends of the crack.

Answer

Weld the crack closed.

Answer

Apply a bead of high-strength epoxy over the crack.

Answer

Rivet a doubler patch directly over the crack.

Question 6

The process of heating an aluminum alloy to a specific temperature, holding it there for a predetermined time, and then rapidly cooling it (quenching) is performed primarily to:

Accepted Answer

Improve its strength and hardness.

Answer

Increase its corrosion resistance.

Answer

Relieve internal stresses from manufacturing.

Answer

Enhance its electrical conductivity.

A technician discovers a small, localized area of corrosion on an aluminum alloy surface characterized by small holes or cavities.When the white-gray powdery deposit is removed, tiny pits are visible.What type of corrosion is this?

A technician discovers a small, localized area of corrosion on an aluminum alloy surface characterized by small holes or cavities.
When the white-gray powdery deposit is removed, tiny pits are visible.
What type of corrosion is this?