No fatalities

Glider HB-765 Damaged in Short Landing Due to Rain Shower

Langenthal Flugplatz (LSPL), BE, CH

On April 9, 1965, an ALEXANDER SCHLEICHER OHG SEGELFLUGZEUGBAU K 8B (registration HB-765) was involved in an aviation accident near Langenthal Flugplatz (LSPL), BE, CH. No fatalities were reported. Investigators recorded the probable cause as: The pilot misjudged height during landing approach in a rain shower. 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 Ka-8 glider, HB-765, struck unsuitable terrain short of the runway after the pilot misjudged height in a rain shower on April 9, 1965, at Bleienbach airfield. The pilot was unhurt; the glider sustained heavy damage.

Accident

On April 9, 1965, a Schleicher Ka-8 glider, registration HB-765, was involved in an accident during a landing approach at Bleienbach airfield (BE), Switzerland. The pilot, while on final approach, encountered a rain shower. Due to the precipitation, the pilot misjudged the aircraft's height above the ground. As a result, the glider touched down prematurely in terrain unsuitable for landing, short of the designated landing area.

Aircraft and Damage

The glider, a Ka-8 model, was substantially damaged in the accident. The extent of the damage was estimated at 20-25% of the aircraft's value. Despite the severity of the impact, the pilot sustained no injuries.

Investigation Findings

The official investigation by the Swiss Federal Commission for Aircraft Accident Investigation concluded that the accident occurred because the pilot misjudged his altitude during the landing approach while flying through a rain shower. No other factors were identified. The report was approved on June 22, 1965, and circulated on July 12/21, 1965.

Probable cause

The pilot misjudged height during landing approach in a rain shower.

Frequently asked questions

What happened in the 9 Apr 1965 ALEXANDER SCHLEICHER OHG SEGELFLUGZEUGBAU K 8B accident near Langenthal Flugplatz (LSPL), BE, CH?

A Ka-8 glider, HB-765, struck unsuitable terrain short of the runway after the pilot misjudged height in a rain shower on April 9, 1965, at Bleienbach airfield. The pilot was unhurt; the glider sustained heavy damage.

Were there any fatalities in the 9 Apr 1965 ALEXANDER SCHLEICHER OHG SEGELFLUGZEUGBAU K 8B accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 9 Apr 1965 involved an ALEXANDER SCHLEICHER OHG SEGELFLUGZEUGBAU K 8B, registration HB-765, at Langenthal Flugplatz (LSPL), BE, CH.

What was the probable cause of the accident?

The pilot misjudged height during landing approach in a rain shower.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/248.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.