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

What happens in the event of a single flap motor failure?

1. The flaps will not operate

2. The flaps will operate at full speed

3. The flaps will operate at half speed

4. The flaps will retract automatically

The correct answer is: The flaps will operate at half speed

In the event of a single flap motor failure on the PSA Airlines Canadair Regional Jet Systems (PSA-CRJ), the correct outcome is that the flaps will operate at half speed. When one of the flap motors fails, the remaining operational motor continues to drive the flaps, but at a reduced rate. This is implemented to ensure that the aircraft can still safely control its lift and landing characteristics without the full functionality of both motors. Operating at half speed allows for a more manageable and controlled adjustment of the flaps, reducing the risk of an abrupt change in lift characteristics that may occur if both motors were to fail entirely. The remaining operational motor compensates for the failure to some extent, aiding in maintaining safe operations during critical phases like approach and landing.