Harmonised European rules for RPAS

Very low level (VLL) ➽ Visual line of sight (VLOS) in a range not greater than 500 meters from the remote pilot, in which the remote pilot maintains direct unaided visual contact with the remotely piloted aircraft; < 500 ft AGL ➽ Extended Visual Line of Sight (E-VLOS) where, beyond 500 meters, the pilot is supported by one or more observers, in which the crew maintains direct unaided visual contact with the remotely piloted aircraft; < 500 ft AGL ➽ Beyond VLOS (B-VLOS) where the operations are also below 500 ft., but beyond visual line of sight requiring additional technological support.