Aviation Maintenance Technician, Second Class (AMT2) SWE Practice Exam

A tubed tire at 160 psi requires slippage marks?

No Yes, because it has a tube Yes, only if pressure is 150 or less No, tubes do not matter

Correct Answer:

Yes, because it has a tube

Explanation:

Slippage marks are used to detect movement of the inner tube inside a tubed tire. When a tire has a tube, the tube can slip or rotate relative to the tire and rim under pressure, which can lead to improper seating or pinch flats. Marking the tire and tube lets you see any subsequent slip during service. This requirement applies because a tube is present, not because of a specific pressure value. Therefore, a tubed tire at 160 psi should have slippage marks. Tubeless tires don’t have an inner tube, so this check isn’t needed for them.

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