FAA Powerplant Written Practice Test

What does the Engine Electronic Control (EEC) manage in a FADEC system aircraft?

1. Controls various engine subsystems and the fuel metering unit

2. Manages only fuel flow

3. Regulates engine temperature

4. Operates aircraft navigation systems

The correct answer is: Controls various engine subsystems and the fuel metering unit

In a Full Authority Digital Engine Control (FADEC) system, the Engine Electronic Control (EEC) plays a crucial role in managing various engine subsystems to ensure optimal performance and efficiency. This includes overseeing the fuel metering unit, which is responsible for regulating the precise amount of fuel delivered to the engine based on various parameters such as power requirements, altitude, and temperature. The EEC integrates data from multiple sensors and monitors engine performance in real time, adjusting parameters to maintain engine efficiency while ensuring safety and adherence to operational limits. By controlling other subsystems—such as ignition timing, thrust management, and sometimes even monitoring engine health—the EEC ensures that all components work together effectively for reliable engine operation. This comprehensive control is essential for maximizing engine performance and minimizing emissions, which is why the choice that specifies a broad range of functions, including management of various engine subsystems along with the fuel metering unit, is accurate. Other options mentioned focus on narrower aspects or unrelated systems, which do not encapsulate the full capabilities of the EEC in a FADEC environment.