Casualties unknown

1969 Bücker Jungmann Accident at Speck-Fehraltdorf (HB-USL)

Speck-Fehraltorf Flugplatz (LSZK), ZH, CH

On September 24, 1969, an AG FÜR DORNIER-FLUGZEUGE BÜ 131 (registration HB-USL) was involved in an aviation accident near Speck-Fehraltorf Flugplatz (LSZK), ZH, CH. Investigators recorded the probable cause as: The pilot landed 5.3 meters outside the runway shortly before dusk, and the aircraft entered a beet field during rollout, where it was heavily decelerated and overturned. This summary draws on records from the Swiss Transportation Safety Investigation Board (STSB / SUST).

Sourcesthe Swiss Transportation Safety Investigation Board (STSB / SUST)Primary reportUpdated 2026-09-13Data APIEditorial standards

A Bücker Jungmann (HB-USL) crashed on 24 September 1969 at Speck-Fehraltdorf after landing off the runway. The aircraft overturned in a field, causing heavy damage but no injuries.

Incident Overview and Investigation Status On 24 September 1969, a Bücker Jungmann with registration HB-USL was involved in an accident at the Speck-Fehraltdorf airfield. The Swiss Federal Accident Investigation Commission reviewed the case and approved the investigation report dated 17 December 1969, which was transmitted to the commission on 9 January 1970. The final decision was circulated between 26 March and 9 April 1970. ## Sequence of Events According to the approved report, the pilot initiated the landing shortly before dusk. The aircraft touched down 5.3 meters outside the runway. During the rollout, it entered a beet field, where it was heavily decelerated and subsequently overturned. ## Outcome The occupants of the aircraft were not injured. The Bücker Jungmann sustained significant damage as a result of the incident.

Probable cause

The pilot landed 5.3 meters outside the runway shortly before dusk, and the aircraft entered a beet field during rollout, where it was heavily decelerated and overturned.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/523.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.