In Latvia a drone was found in a tree during a test flight in early May. The drone with a weight of 26 kg and a maximum flight time of 90 hours was found by an accidental passer-by.

The flyaway even led to a three-day closure of the airspace over Riga. Airspace restrictions were introduced for regular air traffic. For example, flying was not allowed above the capital Riga and all international air traffic flying overhead had to maintain a minimum flight altitude of 6 km.

And now it appears that no license was issued for the test flight. Also, no provisions were made to prevent the drone from leaving the test area (geocaging).

In any case, the incident underscores the importance of technology to monitor drones flying out of sight remotely.

Source: Dronewatch via The Register