S-19-II Zwischenfall bei Holderbank: Pilot rettet sich mit Fallschirm nach Steuerungsversagen

Holderbank, Switzerland Spalinger S 19 II

Am 15. Januar 1961 erlebte ein Spalinger S 19 II während eines Fluges in der Nähe von Holderbank, Schweiz, ein Steuerungsversagen. Der Pilot, der vom Flugplatz Birrfeld gestartet war, verlor plötzlich die Kontrolle, als sich der Steuerknüppel löste. Glücklicherweise konnte der Pilot erfolgreich seinen Fallschirm einsetzen und sicher landen, ohne Verletzungen zu erleiden. Das Segelflugzeug wurde jedoch beim Aufprall auf den Boden zerstört. Der Zwischenfall wurde auf einen strukturellen Fehler im Steuerungssystem aufgrund unsachgemäßer Schweißarbeiten zurückgeführt, wie die offizielle Untersuchung bestätigte.

  1. Aerotow to ridge: The pilot aerotowed from Birrfeld airfield in HB-544 to the Chestenberg ridge to fly a five‑hour soaring task.
  2. Ridge soaring cruise: For about one and a half hours the pilot flew regular figure‑eight patterns in ridge lift along the Chestenberg, trimmed slightly tail‑heavy.
  3. Control stick failure: At about 13:05, while initiating another right turn at 250 m above the west end of the Chestenberg, the control stick broke loose at its lower attachment and hung only on the control cables.
  4. Loss of control: With the control stick disconnected, the glider pitched up, lost speed, passed through a mush/sackflug phase, and then entered an increasingly steep dive.
  5. Pilot bailout: The pilot jettisoned the canopy, released his harness, exited the glider head‑first, and deployed his parachute, which opened normally.
  6. Uncontrolled maneuvers: After the pilot left, the unmanned glider performed two uncontrolled loopings before descending toward the ground.
  7. Crash - no injury: The pilot landed uninjured by parachute in a limestone quarry near Holderbank, while the glider crashed nearby and was destroyed on impact.
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