How far must a Remote Pilot in Command maintain visual line of sight with the aircraft?

A Remote Pilot in Command must maintain visual line of sight with the unmanned aircraft at all times during flight to ensure safe operation and effective management of the aircraft. The requirement to keep visual line of sight within 3 statute miles (not 1,500 feet) is established to ensure that the pilot can visually perceive the aircraft's position, orientation, and movement in relation to the surrounding environment. This helps mitigate risks associated with midair collisions, obstacles, and other hazards.

The distance of 3 statute miles allows the remote pilot to stay aware of the aircraft's surroundings, enabling timely response to any changes or emergencies. Additionally, visual line of sight ensures that pilots can maintain full control over their operations, which is crucial for safe maneuvering and adherence to regulations.