Air Accidents Investigation Branch
The pilot was flying his glider on a cross-country flight from Talgarth Airfield in South Wales towards Snowdonia National Park. When the pilot did not return a search was launched. The glider and deceased pilot were found in a field 3 nm south of Blaenau Ffestiniog. A post-mortem examination of the pilot found he had suffered a heart attack in flight which would have either rendered him unconscious or been fatal.