← All explained questions · Aircraft Structure, Systems and Powerplants

Besides lubrication, which is a function of the engine oil system?

Choices

  • Generating ignition spark

    Spark comes from the magnetos, not the oil system.

  • Helping cool the engine by carrying away heatcorrect

    Oil helps cool the engine in addition to lubricating, cleaning, sealing, and cushioning.

  • Charging the battery

    The alternator charges the battery, not the oil system.

  • Providing cabin pressurization

    Training airplanes are not pressurized by the oil system.

Why

The oil system lubricates, cools, cleans, seals, and cushions the engine; the pilot monitors oil pressure and temperature gauges to judge its health.

FAA source: PHAK Ch. 7 (engine oil systems)browse the reference library →

This is taught in Mixture, Oil and Fuel study the lessons free, then practice with grading and mastery tracking.

Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.

Besides lubrication, which is a function of the engine oil system? · PPL Free Ground School