FAA Powerplant Written Practice Test 2025 - Free Powerplant Exam Questions and Study Guide

The significant pilot-controlled input in the Engine Fuel Control Unit (EFCU) for managing fuel metering is the power lever angle. The power lever angle is crucial because it directly correlates to the pilot's requested power or thrust output. As the pilot adjusts the power lever, this action prompts the EFCU to modify the fuel flow to the engine, ensuring that the engine operates efficiently and responds correctly to the power demands.

The EFCU uses the power lever angle to determine the appropriate fuel flow required to achieve the desired engine performance. Therefore, accurate management of the power lever angle allows for precise control over engine thrust and performance, which is essential for safe and effective flight operations.