Grunau Baby II incident at Thun airfield: student pilot parachutes after release issue

On October 28, 1967, a Grunau Baby II experienced an incident at Thun Airfield during a training flight. The student pilot attempted to release from aerotow at 300 meters but initially failed. Upon eventual release, the glider entered an uncontrolled spin, prompting the pilot to bail out using a parachute. The pilot sustained a leg fracture upon landing, while the glider was heavily damaged. The incident was attributed to improper execution of the release maneuver and subsequent handling of the spin.