Under what conditions must a UAS pilot operate during the day?

A UAS pilot must operate during the day while maintaining unaided visual line-of-sight with the unmanned aircraft. This requirement is critical for ensuring that the pilot can effectively manage the UAS's operation and avoid collisions with other aircraft, obstacles, and persons on the ground. The ability to see the UAS with unaided vision ensures that the pilot remains aware of the aircraft's position, flight path, and surroundings, which is essential for safe operation.

Operating with night vision goggles is not a standard practice for day operations, as such equipment is specifically designed for night-time use and is not applicable when flying during daylight. Monitoring multiple UAS simultaneously would complicate visual control and likely impede the pilot's ability to see and manage each aircraft effectively. Lastly, the requirement to operate at altitudes above 200 feet is not related to the need for visual contact during the day; pilots can operate a UAS at various altitudes, provided they maintain visual line-of-sight in compliance with Federal Aviation Administration (FAA) regulations.