What happened
On July 27, 2016, a 31-VC DTA J-RO 914 UL gyrocopter crashed into a mountainside near Beyrèdes-Jumbo, France. The pilot had departed from Spain the previous day, flying under VFR conditions to reach a destination in Spain, where he had joined his family. For the return flight to Saint-Gaudens, the pilot had planned an alternative route in case weather conditions at the Bielsa Pass became unfavorable.
During the flight, the pilot crossed the border and sent a message to his family confirming his position. However, as the aircraft progressed through the valley, the weather began to change. The aircraft was later found at an altitude of approximately 3,200 ft on an inaccessible rocky slope. The impact resulted in one fatality and the total destruction of the aircraft.
The investigation
The investigation focused on the aircraft's flight path, the wreckage, and the meteorological conditions at the time of the accident. Examination of the wreckage revealed that all structural failures were caused by the impact itself. The control linkages remained intact, and the engine was producing power at the moment of collision. Data from the engine control unit and the position of the elevator were consistent with a normal descent prior to the crash.
Meteorological analysis showed a layer of stratocumulus clouds at approximately 2,500 ft on the French side of the border. While visibility remained above 10 km, the presence of low clouds was noted by witnesses on the ground, who described a "fog" clinging to the terrain. The investigation also reviewed the pilot's experience and the flight planning regarding the potential for deteriorating weather.
Findings
Investigators concluded that the pilot likely attempted to descend beneath a low cloud layer consisting of stratus and stratocumulus. As the valley narrowed, the pilot likely attempted a turn to head back, but the clouds obscured the terrain, leading to a collision during a left-hand turn while descending at high horizontal speed.
The primary cause of the accident was an insufficient assessment of the evolving weather conditions during both flight preparation and the flight itself. The investigation also noted that a strong desire to reach the intended destination to reunite with family likely contributed to the pilot delaying the decision to turn back.