Collision du K 8 B avec un obstacle lors d'un atterrissage en campagne près de Sombeval, Suisse
Le 10 août 1972, un Alexander Schleicher K 8 B a été impliqué dans un incident près de Sombeval, Suisse. Le pilote tentait un atterrissage en campagne sur un champ en pente lorsque l'aile droite de l'appareil a heurté un poteau de marquage, entraînant un crash. Malgré les lourds dommages subis par le planeur, le pilote est resté indemne. Le rapport officiel a confirmé que le choix du site d'atterrissage était inapproprié en raison des caractéristiques du terrain, contribuant à la collision.
- Aerotow cross-country: The pilot aerotowed from Courtelary at 1310 local time in a K 8 B for a 50 km Silver-C cross-country flight toward L'Auberson.
- Low altitude after release: After releasing at about 500 m QFE north of Corgémont and circling briefly, the glider continued to lose height in weak conditions.
- Left start area low: The pilot left the vicinity of the start area with insufficient height, setting up the need for an unplanned outlanding.
- Unavoidable outlanding: At about 400 m above ground, the pilot recognized that an outlanding was unavoidable and selected a sloping field near Sombeval as the landing site.
- Unsuitable landing field: The chosen field had a 5° downslope toward the south and was bordered to the north by a road on a 2 m embankment with posts close to the intended approach path.
- Low, flapless final: Flying downwind north of Sombeval, the pilot turned right around the village and commenced final at about 90 km/h on heading 250° without deploying airbrakes, despite the nearby road embankment.
- Crash - no injury: On final approach the right wing struck a marking post at the south edge of the road embankment, causing the glider to crash heavily and be badly damaged while the pilot remained uninjured.