PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

Which system component manages abnormal engine starts?

1. Electrical control unit

2. FADEC

3. Pneumatic control system

4. Engine control module

The correct answer is: FADEC

The FADEC, which stands for Full Authority Digital Engine Control, is the system component responsible for managing the engine's operations including abnormal engine starts. This sophisticated digital control system provides comprehensive monitoring and control of all essential engine functions, ensuring optimal performance and efficiency throughout various phases of operation. During abnormal start conditions, the FADEC is programmed to take specific actions to ensure safety and to mitigate potential issues. It can automatically adjust fuel flow, ignition timing, and other parameters to either rectify the start or safely execute a shutdown to prevent damage to the engine or other systems. The accuracy and reliability of FADEC in handling these scenarios are crucial for modern aircraft engines, which rely heavily on advanced electronic controls for their operation. Other components like the electrical control unit, pneumatic control system, and engine control module serve different functions within the aircraft systems. While they play important roles in the overall operation, they do not specifically handle the management of abnormal engine starts in the same way that FADEC does. The focus of FADEC on engine management makes it the correct choice for this question.