Incident de Ka 8 à Hornberg près de Saanen en raison d'une vitesse réduite dans des conditions alpines

Saanen, Switzerland Alexander Schleicher K 8 B

Le 13 août 1965, un planeur Ka 8 s'est écrasé à Hornberg près de Saanen, Suisse, après un vol depuis l'aérodrome de Saanen-Gstaad. Le pilote, avec une expérience limitée en terrain montagneux, a subi une perte soudaine de vitesse et de contrôle, entraînant la descente de l'appareil dans un groupe d'arbres. Le pilote a subi des blessures légères, tandis que le planeur a été largement détruit. L'enquête a conclu que l'accident était probablement dû au fait que le pilote volait trop lentement dans des conditions turbulentes.

  1. Aerotow ridge flight: The pilot aerotowed from Saanen-Gstaad and flew for about 40 minutes ridge soaring along the west face of the Hornberg.
  2. Low mountain experience: The pilot had only 6:55 hours of total glider time and no prior mountain soaring experience, with limited time on the Ka-8 type.
  3. Leaving main lift: While attempting to fly around the southern summit toward the east slope, the glider left the main ridge updraft over the gently rising Gfellalp area.
  4. Slow flight near stall: In an effort to maintain altitude after leaving the main updraft, the pilot allowed the airspeed to approach the stall (abkipp) speed of the Ka-8.
  5. Bump-induced speed loss: A gust or bump further reduced the already low airspeed, causing the glider to stall and roll off abruptly to the left with loss of control.
  6. Crash - minor injury: The stalled glider descended in a left turn into a small group of fir trees on the Gfellalp, largely destroying the aircraft and slightly injuring the pilot.
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