Air Accidents Investigation Branch
February 13
09:59
2025
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During a test flight to validate a flight control software update, the UA climbed and veered left. It then descended and struck two unoccupied General Aviation (GA) aircraft, coming to rest underneath the second. The UA was destroyed.
The operators investigation identified that the UA lost control due to the software commanding more thrust than needed for level flight. Several technical, process and human performance factors contributed to the accident.
The operator has taken thirteen safety actions to prevent reoccurrence.