The aircraft took off from Coal Aston Airfield but did not achieve a normal rate of climb. At the end of the runway it turned to the left and then stalled, descending into an adjacent field. The pilot was possibly attempting to land back at the airfield. The evidence indicates that the engine suffered a partial loss of power, probably as a result of fuel vapour disrupting the fuel supply to the engine. It was found that the fuel vapour return line had been connected to the inlet of the fuel selector valve, rather than to the fuel tank. Any vapour in the fuel system was therefore routed back to the engine instead of returning to the fuel tank to dissipate. The accident was not survivable.
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Published 9 November 2017