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

When ED-1 fails, which page defaults to display?

1. Backup/ED-1

2. Primary/ED-1

3. Primary/ED-2

4. Secondary/ED-2

The correct answer is: Primary/ED-2

When ED-1, which is the primary electronic display, fails, the system is designed to automatically switch to the backup display option, ensuring that critical flight information remains visible to the pilot. In this case, the correct answer indicates that when ED-1 fails, the primary display (ED-2) takes over to maintain continuity of display for the necessary information. The reason why ED-2 is the one that displays following the failure of ED-1 lies in the system architecture of the Canadair Regional Jet. The aircraft's system is designed for redundancy, allowing pilots to have access to essential instruments and information even if one display fails. Therefore, the primary switch to ED-2 ensures that flight crews are not left without access to important flight data during a failure. This design emphasizes safety and operational reliability, which are critical in aviation. Access to ED-2 provides pilots with the necessary visual cues and flight data to manage the aircraft effectively, demonstrating the importance of having backup systems that seamlessly take over in case of a primary system failure.