LS 4 tödlicher Strömungsabriss bei Außenlandung nahe Oberdigisheim

Oberdigisheim, Germany Rolladen-Schneider LS 4

Am 25. April 2004 ereignete sich ein tödlicher Unfall mit einer Rolladen-Schneider LS 4 in der Nähe von Oberdigisheim, Deutschland. Der Pilot, der etwa 216 Flugstunden Erfahrung hatte, versuchte nach fast einer Stunde Flug eine Außenlandung. Zeugen beobachteten, wie das Segelflugzeug in geringer Höhe in einen Strömungsabriss geriet und in einen Trudeln überging, was zu einem nahezu vertikalen Aufprall führte. Der Pilot erlitt tödliche Verletzungen und das Segelflugzeug wurde zerstört. Der Bericht bestätigte, dass der Strömungsabriss aufgrund unzureichender Geschwindigkeit während des Landeanflugs auftrat.

  1. Cross-country flight: The LS 4 launched by aerotow from Kirchheim/Teck-Hahnweide for a cross-country soaring flight and proceeded uneventfully for nearly an hour.
  2. Lee-side approach path: During preparation for an outlanding near Oberdigisheim, the glider’s approach path ran behind a westward-sloping hillside, placing it in pronounced lee with expected wind shear and increased sink.
  3. Low-speed approach: While setting up the approach to the selected outlanding field, the glider was flown with insufficient airspeed for the conditions.
  4. Stall in low turn: At about 50 m above ground in a turn toward the outlanding field, the glider exceeded its critical angle of attack, stalled, and entered a spin.
  5. Spin unrecoverable: Because of the very low altitude, there was not enough height available to successfully recover from the spin before ground impact.
  6. Crash - fatal: The glider impacted the ground in a steep, nearly vertical attitude on a westward-sloping hillside near Oberdigisheim, fatally injuring the pilot and destroying the aircraft.
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