CPL AGK Systems Practice Questions - CASA Commercial Pilot Licence (Aeroplane) - Aircraft General Knowledge (CSYA) Exam

Which of the following conditions is most likely to cause engine detonation?

Using a fuel grade with a higher octane rating than recommended. Flying at high altitudes with low cylinder head temperatures. Using a fuel grade lower than specified or operating under high load with a lean mixture. Operating with an excessively rich fuel-air mixture at low power settings.

Correct Answer:

Using a fuel grade lower than specified or operating under high load with a lean mixture.

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