What type of ignition system is commonly found in an aircraft?

The most commonly found ignition system in aircraft is the configuration consisting of two engine-driven magnetos with two spark plugs per cylinder. This setup enhances reliability and efficiency in the ignition process.

Each magneto operates independently, meaning that if one fails, the other can still provide the necessary spark. This redundancy is crucial for safety in aviation, as a dual ignition system provides a backup in case of a malfunction. Additionally, having two spark plugs per cylinder helps ensure a more complete and efficient combustion process. This dual-spark configuration can improve performance, reduce the risk of engine roughness, and lead to better engine operation, especially at higher power settings.

This is why the choice highlighting two engine-driven magnetos with two spark plugs per cylinder is the standard in most light aircraft, contributing to a more reliable and efficient ignition system overall.