Ka 6 Landungszwischenfall bei La Joux Perret führt zu schweren Schäden

La Joux Perret, Switzerland Alexander Schleicher Ka 6 E

Am 3. Juni 1972 startete ein Pilot mit einer Alexander Schleicher Ka 6 E von Courtelary zu einem Dreiecksflug. Nach abnehmendem Auftrieb entschied sich der Pilot für eine Außenlandung bei La Joux Perret, Schweiz. Während des Landeanflugs führte eine leichte Rechtskurve in Bodennähe dazu, dass die linke Flügelspitze den Boden berührte, was einen Ringelpiez verursachte und das Segelflugzeug schwer beschädigte. Der Pilot blieb unverletzt, und es gab keine Schäden am Boden. Der offizielle Bericht bestätigte, dass der Unfall durch eine in zu geringer Höhe ausgeführte Kurve verursacht wurde.

  1. Cross-country cruise: After aerotow departure from Courtelary, the pilot flew cross-country via Chasseral, St-Imier, Renan and La Cibourg on a planned triangular task.
  2. Lift conditions cease: When the thermals/ascendances stopped near La Joux Perret, the pilot could no longer sustain soaring flight and had to plan an outlanding.
  3. Slight tailwind: The selected landing direction in the field involved a light tailwind of about 2–3 knots, although the direction was later judged acceptable.
  4. Field landing approach: The pilot conducted a normal approach into the chosen field, successfully overflying an electrical line and then noticing that the first part of the field sloped uphill.
  5. Low-altitude right turn: To align with the uphill slope, the pilot made a slight flat right turn at very low altitude just before touchdown.
  6. Left wingtip strikes: During this low-altitude turn, the left wing contacted the ground, initiating a ground loop (cheval de bois).
  7. Outlanding - damage: The glider ground-looped and its tail broke, causing serious damage to the aircraft but no injuries to the pilot and no damage on the ground.
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