FAA AMT Airframe Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 1030

What is the usual cause of runs and sags in aircraft finishes?

Application at low temperature

Inadequate mixing of the paint

Too much material applied in one coat

Runs and sags in aircraft finishes are typically caused by applying too much material in one coat. This can occur due to incorrect spray technique or application with a sprayer that is not properly adjusted for proper atomization. The other options, while they may contribute to defects in aircraft finishes, are not specifically responsible for causing runs and sags. Application at low temperatures or inadequate mixing of the paint can lead to other imperfections, such as orange peel or dry spray, while the use of an incorrect solvent can cause adhesion issues.

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Use of an incorrect solvent

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