Aircraft systems and instrumentsQuestion 616 of 934

What may an overboost condition in a turbocharged engine produce?

  1. Carburetor icing
  2. Severe detonation
  3. Low oil temperature
  4. A lean misfire in one cylinder only
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Correct answer: Severe detonation

An overboost can occur if the waste gate stays closed during a descent from high altitude.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Superchargers and Turbosuperchargers — System Operation, page 174

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Questions last reviewed: 18 October 2026