ATO Corrosion Practice Exam

Which of the following is a common sign of corrosion in aircraft structures?

Paint blistering. Improved fuel economy. Smooth, shiny surfaces. Increased cabin pressurization noise.

Correct Answer:

Paint blistering.

Explanation:

Paint blistering is a common sign of corrosion in aircraft structures. When corrosion occurs beneath a painted surface, moisture and corrosion products push up against the coating, causing the paint to blister, crack, or peel. This indicates the protective layer has been compromised and the metal underneath may be corroding, which can weaken the structure if not addressed promptly. The other options aren’t typical indicators of corrosion: improved fuel economy isn’t related to corrosion, a smooth shiny surface suggests the coating remains intact, and increased cabin pressurization noise isn’t a common or reliable sign of corrosion.

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