No fatalities

Grunau Baby II HB-87 Accident on 16 May 1965 in Sisseln

Sisseln Flugplatz, AG, CH

On May 16, 1965, an EDMUND SCHNEIDER, FLUGZEUGBAU GRUNAU BABY II (registration HB-87) was involved in an aviation accident near Sisseln Flugplatz, AG, CH. No fatalities were reported. Investigators recorded the probable cause as: The student pilot lost control during the takeoff roll in a winch launch. This summary draws on records from the Swiss Transportation Safety Investigation Board (STSB / SUST).

Sourcesthe Swiss Transportation Safety Investigation Board (STSB / SUST)Primary reportUpdated 2026-10-18Data APIEditorial standards

A Grunau Baby II glider (HB-87) crashed during a winch launch at Sisseln airfield on 16 May 1965. The student pilot lost control during the takeoff roll; the cable released after lift-off, leading to a steep descent. The pilot was uninjured; the glider sustained heavy damage.

Accident Summary

On 16 May 1965, a Grunau Baby II glider, registration HB-87, was involved in an accident at the Sisseln airfield in the canton of Aargau (AG), Switzerland. The aircraft was being operated by a student pilot under winch launch procedures.

Sequence of Events

During the takeoff roll while under winch tow, the student pilot lost control of the glider. The winch cable did not release until after the glider had already become airborne. Subsequently, the glider descended at a relatively steep angle and struck the ground.

Injuries and Damage

The student pilot was uninjured. The glider sustained substantial damage, estimated at 40% of its value.

Probable cause

The student pilot lost control during the takeoff roll in a winch launch.

Frequently asked questions

What happened in the 16 May 1965 EDMUND SCHNEIDER, FLUGZEUGBAU GRUNAU BABY II accident near Sisseln Flugplatz, AG, CH?

A Grunau Baby II glider (HB-87) crashed during a winch launch at Sisseln airfield on 16 May 1965. The student pilot lost control during the takeoff roll; the cable released after lift-off, leading to a steep descent. The pilot was uninjured; the glider sustained heavy damage.

Were there any fatalities in the 16 May 1965 EDMUND SCHNEIDER, FLUGZEUGBAU GRUNAU BABY II accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 16 May 1965 involved an EDMUND SCHNEIDER, FLUGZEUGBAU GRUNAU BABY II, registration HB-87, at Sisseln Flugplatz, AG, CH.

What was the probable cause of the accident?

The student pilot lost control during the takeoff roll in a winch launch.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/251.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.