Private Pilot Private Exam

What is the maximum interval for testing and inspecting an ATC transponder?

1. 12 calendar months

2. 18 calendar months

3. 24 calendar months

4. 36 calendar months

The correct answer is: 24 calendar months

The maximum interval for testing and inspecting an ATC transponder is 24 calendar months. This regulation is established to ensure that transponders function correctly and maintain the safety and efficiency of air traffic control operations. Regular testing helps identify any malfunctions or degradation in performance, which is critical for the transponder's role in collision avoidance and providing information to air traffic controllers. Testing every 24 months is a safety requirement as it aligns with regulatory standards set forth by aviation authorities, promoting consistent performance in various environmental conditions and usage scenarios. Testing beyond this interval could increase the risk of equipment failure, which could compromise air safety. Therefore, adherence to the 24-month schedule ensures that all equipped aircraft are capable of transmitting their position accurately and contributing to overall situational awareness in the skies.