Will the engine still run with the Master Switch in the OFF position?

Prepare for the Pre-Solo Aeronautical Knowledge Test with flashcards and multiple-choice questions, each featuring hints and explanations. Ace your exam effortlessly!

The engine will indeed continue to run regardless of the Master Switch position because the Master Switch controls the electrical systems of the aircraft but not the engine itself in conventional piston-engine aircraft. The ignition system of the engine is powered by the magnetos, which generate the necessary electrical power to ignite the fuel-air mixture in the cylinders independently of the aircraft’s electrical system.

This independence means that as long as the magnetos are functioning and have residual energy, the engine can continue to run even if the Master Switch is turned off. However, it’s important to note that when the Master Switch is turned off, it disables the electrical systems required for other operations and potentially affects other components like fuel pumps, lights, and avionics.

The options that suggest the engine requires the Master Switch to be ON or that it stops when the switch is OFF reflect a misunderstanding of how the engine's ignition system operates. Additionally, the notion that the engine could only run with an external power source does not apply in this context, as the engine's ignition systems are self-contained.

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