What is the maximum distance a drone can be seen during flight and what should the pilot do if they lose sight of the drone?

The average distance a drone can be seen, depending on terrain, air conditions, and other obstacles, will range from 1,000 – 2,000 feet which is less than one half mile, even though some drones can physically fly up to 6 miles away. If the pilot and visual observer lose sight of the drone for more than 15 seconds, the pilot should activate the “return to home” procedure and communicate that he or she has done so.