Colisión del Ka 2B con el terreno cerca de Ennenda durante vuelo de ladera
El 31 de mayo de 1982, un planeador Alexander Schleicher Ka 2B colisionó con el terreno cerca de Ennenda, Suiza, durante un vuelo de ladera. El piloto y un pasajero habían despegado del aeródromo de Mollis más temprano ese día. Al intentar ganar altitud a lo largo de la ladera de Chrisegg, el planeador perdió velocidad y altitud, resultando en una colisión con la pendiente. El piloto sufrió heridas leves, mientras que el pasajero resultó gravemente herido. El planeador fue destruido en el impacto.
- Ridge soaring flight: After an aerotow departure from Mollis, the pilot conducted a several-hour soaring flight and was ridge soaring along the west slope of Chrisegg to gain height.
- Low experience, fatigue: The pilot had relatively low total gliding experience and reported feeling somewhat tired after the long flight, which likely degraded his judgment of terrain clearance.
- Tight turn near slope: While flying close to the steep mountainside and finding lift, the pilot initiated a right-hand circling turn with insufficient distance from the slope.
- Sink and speed loss: On the valley side of the turn the glider encountered sink and a reduction in airspeed, eroding its energy margin near the terrain.
- Pushed toward slope: To regain airspeed, the pilot pushed the nose down toward the mountainside while still in close proximity to the steep slope.
- Collision with slope: With insufficient height and distance to recover, the glider struck the steep slope in an angled attitude near the upper edge of a small snow cone.
- Crash - serious injury: The glider was destroyed on impact, the pilot was slightly injured, and the passenger sustained serious injuries.