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

In the event of an RTU failure on the First Officer's side, how can the #2 radios be tuned?

1. Selecting the 1/2 button on RTU #1 and cross-side tune

2. Using the FMS Radio page to tune #2

3. Both selecting the 1/2 button on RTU #1 and using FMS Radio page

4. None of the above

The correct answer is: Both selecting the 1/2 button on RTU #1 and using FMS Radio page

The scenario involves an RTU (Radio Tuning Unit) failure on the First Officer's side, which necessitates alternative methods for tuning the #2 radios. The first correct method is by selecting the 1/2 button on RTU #1. This allows the captain to take control of tuning the second radio from their side, ensuring that communication channels remain operable even with the failure of the First Officer's RTU. Additionally, using the FMS (Flight Management System) Radio page also presents a viable alternative. The FMS provides a means to manage the radios, allowing the crew to tune the #2 radios from the FMS interface. This dual capability emphasizes the redundancy built into the system to maintain effective communication during an RTU failure. By being able to utilize both RTU #1 and the FMS Radio page, the crew has options to ensure operational continuity. This understanding reflects the design principles of redundancy and operational safety in aviation systems, allowing pilots to manage equipment failures effectively.