AAIB investigation to Aeryon Skyranger R60, (UAS) SR9112798
Loss of control due to high winds and software error, Brixton, London, 18 January 2018.
Summary:
After takeoff the unmanned aircraft (UA) experienced winds exceeding the manufacturer’s stated limitations and was unable to hold its position position. A culmination of the subsequent position warning and automatic attempt to return “home” and land triggered a software error, commanding the UA to land while not over its home position. As the UA descended there was a loss of link with the ground control unit and the UA collided with a tree. The loss of signal was probably caused by the loss of radio line of sight between the UA and ground control unit when it drifted in the high wind over a five-storey building.
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Published 10 January 2019