Colisión del K 8 B con una cerca durante aterrizaje en campo cerca de Enetchirel, Suiza

El 14 de agosto de 1971, un Alexander Schleicher K 8 B enfrentó condiciones meteorológicas desafiantes durante un vuelo local desde el aeródromo de Zweisimmen. El piloto, incapaz de ganar altitud debido a los fuertes vientos, intentó un aterrizaje en campo en un terreno inclinado cerca de Enetchirel, Suiza. Durante el rodaje, el ala izquierda del planeador tocó el suelo, causando que la aeronave se desviara a la izquierda y colisionara con una cerca de alambre de púas. El piloto resultó ileso, pero el planeador sufrió daños significativos. El informe oficial concluyó que la decisión del piloto de continuar volando en condiciones desfavorables y la elección del sitio de aterrizaje contribuyeron al incidente.

1. Aerotow local flight: The pilot took off at 1218 on aerotow from Zweisimmen for a local soaring flight and released at about 1800 m west of the Niderhorn after climbing to roughly 2100 m.
2. Drift into Diemtigtal: In strong northwesterly winds the pilot allowed the glider to drift over the Niderhorn ridge into the rear Diemtigtal, where it encountered strong sink.
3. Unfavourable weather: Strong winds, showers or thunderstorms with gusts and turbulence, and rain showers entering the Diemtigtal created difficult soaring and landing conditions.
4. Continued eastward flight: Hoping to find lift on the opposite side of the valley, the pilot continued flying eastward but was unable to gain altitude.
5. Decision for outlanding: As rain showers began penetrating the valley, the pilot decided to perform an outlanding on a steep south-facing slope northeast of Enetchirel.
6. Downslope landing roll: The pilot conducted a landing approach on heading 075° onto terrain sloping about 1:10 downhill, and in strong gusty conditions the glider touched down and rolled approximately 150 m before the left wing contacted the ground, yawing the aircraft left.
7. Outlanding - damage: Around 1250 the glider, veering left after wing contact, struck a barbed wire fence with its tail, heavily damaging the aircraft while the pilot remained uninjured.