FAA Powerplant Written Practice Test

What device is typically used on turbine engines to detect wear and warn of potential internal issues?

1. Pressure gauges

2. Magnetic chip detectors

3. Temperature sensors

4. Vibration sensors

The correct answer is: Magnetic chip detectors

The device used on turbine engines to detect wear and warn of potential internal issues is the magnetic chip detector. This device is specifically designed to monitor the lubrication system of the engine, where it identifies and captures ferrous metal particles that may indicate wear from engine components. As the engine operates, metal debris can accumulate due to friction and wear, and the magnetic chip detector helps to provide an early warning of potential engine trouble before it becomes critical. The presence of metal chips in the lubrication oil signals that abrasive wear is occurring, allowing maintenance personnel to take corrective actions, such as inspections or repairs, before more significant damage occurs. This proactive approach is vital for maintaining the engine's reliability and safety. While pressure gauges, temperature sensors, and vibration sensors are essential monitoring tools in turbine engines, they do not specifically focus on detecting internal wear as effectively as magnetic chip detectors. Pressure gauges and temperature sensors primarily monitor the operating conditions of the engine, while vibration sensors are used to detect imbalances or misalignments but may not directly indicate wear in components.