What happened
The incident occurred during a local solo test flight that had departed from Bristol-Filton Airport. While operating in the vicinity of Avonmouth, the pilot lost control of the aircraft. The airplane subsequently crashed into the River Severn. The sole occupant, the pilot, was killed in the accident.
Findings
The specific circumstances leading to the loss of control were not determined or stated in the available records. No further contributing factors or conclusions regarding the mechanical condition or environmental conditions at the time of the crash are provided.