These loads had been imposed on the tail by the impact from another object, almost certainly some other part of the aircraft which had become detached beforehand. From the portions of the wreckage that were recovered it was ascertained that the tail had been subjected to stress loads in excess of the design ultimate loads, causing it to break away from the rear of the aircraft. Insufficient wreckage of the aircraft was recovered to enable a full investigation into the accident to be conducted. The post-mortem of the pilot revealed that he died of multiple injuries. Despite an extensive search, the body of the passenger, and the forward part of the aircraft, including the wing main spar, landing gear, engine and propeller, were not recovered. The body of the pilot was recovered soon afterwards, along with the complete empennage and several small pieces of wreckage, mainly from the wing and rear fuselage area. An observer in a small boat near the point of impact noted the time to be 11:14 hours During the latter stages of the descent, and on impact with the water, the aircraft was seen to break up into many small pieces. Two smaller pieces were also observed slightly to one side and behind, falling at the same rate as the main body of the aircraft. The aircraft was then seen to descend almost vertically, with the empennage a short distance behind the main fuselage, but still attached by the control cables. It was in level flight on a southerly track to the east of an island named Long Sheelagh, when a loud bang was heard.
"The aircraft departed from Newtownards at about 11:10 hours, and flew south towards Strangford Lough. The cause of the crash was attributed to a structural failure in flight, but the cause of the structural failure was not determined by the AAIB investigation: Written off (destroyed) 09-09-1989 when crashed into Strangford Lough, County Down, Northern Ireland, killing both persons on board (pilot and one passenger). East of Long Sheelagh Island, Strangford Lough, County Down -Īccident investigation report completed and information captured
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