Incidente con Grunau Baby II durante el lanzamiento con cabrestante en el aeródromo de Sisseln

El 16 de mayo de 1965, un Grunau Baby II experimentó un incidente durante un lanzamiento con cabrestante en el aeródromo de Sisseln en Suiza. El estudiante de vuelo perdió el control del planeador durante el lanzamiento, y el cable del cabrestante se liberó solo después de que el planeador despegara. El planeador descendió abruptamente hacia el suelo. El piloto estudiante resultó ileso, pero la aeronave sufrió daños significativos, estimados en un 40 % de su valor.

1. Winch launch ground roll: During the initial ground roll of a winch launch, the student pilot began accelerating in the Grunau Baby II.
2. Loss of control on roll: While still on the ground during the winch launch, the student pilot lost control of the glider's attitude and direction.
3. Late cable release: The winch cable was not released immediately after control was lost and was only released after the glider had already lifted off.
4. Steep descent after lift-off: After lifting off with control already lost and the cable then released, the glider entered a relatively steep descent toward the ground.
5. Crash - no injury: The glider impacted the ground steeply, leaving the student pilot uninjured but causing substantial damage to the aircraft (about 40% of its value).