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Ten questions: Aircraft Structure, Systems and Powerplants

Real practice questions, each with an explanation and its FAA source. No account needed to answer. Halfway through we'll offer a free account to save your answers; it's optional.

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Detonation and preignition: causes, indications, prevention · Topic mastery: Not started

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How does preignition differ from detonation?

Preignition is ignition of the mixture before the spark plug fires, from a hot spot
Preignition only happens on the ground during run-up
Preignition cools the engine below normal temperatures
Preignition is the normal, smooth burning of the charge

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