Außenlandungszwischenfall mit Ka 6 nahe Köniz führt zu erheblichen Schäden und leichten Verletzungen

Köniz, Switzerland Alexander Schleicher Ka 6 CR

Am 10. April 1971 erlebte eine Alexander Schleicher Ka 6 CR eine Außenlandung nahe Köniz, Schweiz. Der Pilot versuchte, Hindernissen während der Landung auszuweichen, was dazu führte, dass eine Flügelspitze den Boden berührte. Das Segelflugzeug erlitt erhebliche Schäden, darunter ein zerstörter Flügel und ein gebrochener Rumpf. Der Pilot zog sich leichte Verletzungen zu. Die Untersuchung bestätigte, dass die Entscheidung zur Landung zu spät getroffen wurde, um ein geeignetes Feld auszuwählen.

  1. Aerotow cross-country: The pilot launched by aerotow from Flughafen Bern for a training cross-country flight and climbed to about 1700 m over the northern end of the Längenberg.
  2. Flight too far leeward: The pilot flew about 9 km behind the Längenberg ridge toward Schwarzwasserbrücke, entering the lee side where sink prevailed and losing significant altitude.
  3. Late landing decision: The decision to abandon the flight and outland was made objectively too late, leaving insufficient time to select and tactically approach a suitable field.
  4. Committed to narrow valley: With insufficient height to return, the pilot committed to an outlanding in the narrow, obstacle-filled Gurtentäli valley and aligned along the valley floor.
  5. Obstacle avoidance maneuvers: Following the valley, the pilot crossed a 16 kV power line at a shallow angle, then pushed for speed to clear a transverse low-voltage/telephone line and attempted to pull up over it before deciding to pass underneath.
  6. Abrupt turn, wingtip strike: To avoid a mast on the left while passing under the line, the pilot made a brusque right turn, causing the right wingtip to catch in the soft field and the left wing to tear through the telephone wires.
  7. Crash - minor injury: The glider impacted nose-first, destroying the right wing and breaking the fuselage, while the pilot sustained a minor head injury and nearby telephone lines and ground were slightly damaged.
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