FAA Military Competency Practice Exam

When is it prohibited to operate an aircraft without an electrical or anti-collision light system?

1. After sunset to sunrise.

2. During inclement weather conditions.

3. When flying below 1,000 feet AGL.

4. At any time unless specifically authorized by ATC.

The correct answer is: After sunset to sunrise.

Operating an aircraft without an electrical or anti-collision light system is prohibited after sunset to sunrise because visibility is significantly reduced during these hours. Aircraft are required to have operational anti-collision lights, such as strobe lights or blinking beacons, to enhance their visibility to other aircraft, especially in low-light conditions. This regulation is crucial for ensuring safety and preventing mid-air collisions when there is reduced visibility due to darkness. While flying during inclement weather or below a certain altitude may present visibility challenges, the explicit requirement for lights pertains primarily to the time of day. It is during night operations that the lack of an anti-collision light system poses the greatest risk, making the specified time frame especially critical for safety in aviation.