AMP - Aviation Maintenance Technician Powerplant Practice Exam

What might occur if an aircraft engine runs out of oil?

1. Improved engine performance

2. Potential severe engine damage

3. Less fuel consumption

4. Increased RPM

The correct answer is: Potential severe engine damage

When an aircraft engine runs out of oil, it can lead to potential severe engine damage. Oil plays a critical role in the functioning of an engine by lubricating moving parts, reducing friction, and dissipating heat. Without sufficient oil, the components of the engine can experience excessive wear or even seize due to the lack of lubrication. This can result in catastrophic failure, necessitating expensive repairs or complete engine replacement. In contrast, the other options suggest outcomes that are highly unlikely or misleading in the context of an engine running out of oil. Improved engine performance and increased RPM are not realistic outcomes; rather, the engine is likely to struggle or fail altogether. Similarly, less fuel consumption would not be associated with a scenario where oil is depleted, as reduced lubrication could lead to increased resistance and, consequently, more fuel use rather than less. Therefore, the correct understanding of the critical role of oil in engine operation underscores the severe risk associated with running out of oil.