FAA 107 Commercial Drone Pilot Practice Exam 2025 – Complete Study Resource

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Question: 1 / 120

What is the minimum visibility requirement for a UAS operating during civil twilight?

2 statute miles

3 statute miles

The minimum visibility requirement for UAS (Unmanned Aircraft Systems) operating during civil twilight is 3 statute miles. Civil twilight occurs when the sun is between 0 degrees and 6 degrees below the horizon, resulting in a time period where there is still enough natural light for visual reference, but visibility can be diminished compared to daylight.

The 3 statute miles visibility requirement is established to ensure that pilots can safely operate their drones while maintaining the ability to see and avoid other air traffic, obstacles, or people on the ground. Adequate visibility is crucial for safe flight operations, particularly during periods when lighting conditions might not be optimal, such as during civil twilight.

This visibility threshold helps mitigate the risks associated with lower light conditions, ensuring operators have sufficient distance to perceive and assess their surroundings. Hence, maintaining a minimum of 3 statute miles ensures compliance with regulations designed to promote safety in the airspace.

5 statute miles

1 statute mile

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