The pilot, accompanied by a passenger, carried out a towed take-off from Sisteron at 12:52. He released the cable close to Rochers de Hongrie at an altitude of about 1,200 m and then performed a spiral followed by figure-of-eight turns along the terrain. During these manoeuvres, he lost control and the glider collided with the terrain.
The analysis of the parameters found that the speed of the glider had progressively decreased in the last seconds of the flight, approaching the stall speed. The height at which the slope soaring manoeuvres were carried out meant that the pilot was unable to regain control of the glider before the impact with the ground.