Atterrissage en campagne d'un Ka 6 près de Plaffeien avec des dommages importants à l'appareil

Le 26 juillet 1971, un planeur Ka 6 CR a effectué un vol d'entraînement depuis l'aéroport de Berne-Belp. Le pilote a tenté de revenir au point de départ mais a rencontré une perte d'altitude près de Plaffeien, Suisse. En raison d'une altitude insuffisante, le pilote a décidé d'un atterrissage en campagne à Zollhaus. L'appareil a été fortement endommagé lors de l'atterrissage, mais le pilote est resté indemne. Le rapport officiel a identifié que l'approche finale a été initiée avec une réserve d'altitude inadéquate.

1. Aerotow cross-country: The pilot aerotowed from Bern-Belp at 14:16 for a training cross-country flight intending to return to the departure airfield.
2. Altitude loss near terrain: After flying via Zimmerwald–Riggisberg–Gurnigel to the Gantrisch and then west toward the Mähre at about 2000 m MSL, the glider began losing altitude and the pilot could not find sufficient lift.
3. Insufficient height for pass: While attempting to return via the Selibühl pass, the pilot lacked updrafts and adequate height reserve and therefore did not risk crossing the pass.
4. Low-altitude outlanding decision: Near Zollhaus, at about 400 m above ground, the pilot decided to perform an outlanding on a selected field.
5. Downwind approach chosen: The pilot flew the intended landing area uphill into the valley despite a tailwind, initiating the final approach with a low height margin.
6. Sink and short approach: During the landing turn the glider was carried over a small slope, encountered about 3 m/s sink, and the final approach became shorter than planned.
7. Outlanding - damage: At about 15:45 the glider touched down slightly skidding and performed a ground loop, heavily damaging the aircraft while the pilot remained uninjured.