AAIB investigation to Tekever AR3, (UAS reg n/a)
Loss of control, Aberporth Airport, Cardiganshire, 19 March 2025
The UA was operating a daylight VLoS training flight from Aberporth Airport at a height of up to 400 ft in benign weather. Having been airborne for 19 minutes, the UA suddenly pitched down and banked sharply. It struck the ground, within the airport boundary, and a small lithium battery fire ensued which was quickly put out by the airport’s fire service.
The manufacturer’s safety department concluded that the most probable cause of the accident was the failure of a flight control servo. At the time of this accident, the commands received from the Ground Control System and the demands made to flight control servos were recorded but the actual positions that the servos then achieved were not. The manufacturer stated that it intends to modify the UAS to record a feedback signal for all flight control servos.
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