What happened
The incident involved a seaplane that departed from Killadeas Naval Air Station for a cross-country navigation training mission. During the flight, meteorological conditions deteriorated significantly, with low cloud cover reducing visibility. While operating within these clouds, the aircraft lost control and impacted Reaghan Hill, situated approximately 24 kilometers northwest of Omagh. The impact resulted in the total destruction of the airframe. All 11 occupants on board were killed in the accident.
Findings
The official investigation determined that the crash was caused by controlled flight into terrain. The evidence suggests that the crew became disoriented and lost their positional awareness while flying in adverse weather conditions, leading to the collision with the hillside.