Casualties unknown

2025-08-16: AEROSPOOL, SPOL. S R.O. WT9 (HB-WZN) — Valeyres-sous-Rances, VD, CH

Valeyres-sous-Rances, VD, CH

On August 16, 2025, an AEROSPOOL, SPOL. S R.O. WT9 (registration HB-WZN) was involved in an aviation accident near Valeyres-sous-Rances, VD, CH. This summary draws on records from the Swiss Transportation Safety Investigation Board (STSB / SUST).

Sourcesthe Swiss Transportation Safety Investigation Board (STSB / SUST)Primary reportUpdated 1785034239Data APIEditorial standards

An Aerospool WT9 (HB-WZN) crashed in a field in Valeyres-sous-Rances on 16 August 2025, during return from a glider towing flight. The pilot sustained fatal injuries; the aircraft was destroyed.

Accident

On 16 August 2025 at 14:56 local time, an Aerospool WT9 motor glider, registration HB-WZN, crashed in a field in the village of Valeyres-sous-Rances, near the town of Orbe in the canton of Vaud, Switzerland. The aircraft was on a Visual Flight Rules (VFR) private flight and was returning to Yverdon-les-Bains Airfield (LSGY) after completing a glider towing mission.

Aircraft and Flight

The aircraft was owned and operated by Air-Club Yverdon, based at Yverdon-les-Bains. The flight, which began and ended at LSGY, was a private operation under VFR. The sole occupant, the pilot, sustained fatal injuries. No passengers were on board, and no third parties were injured. The aircraft was destroyed upon impact, and minor ground damage was reported.

Investigation

The Swiss Safety Investigation Service (SESE) opened an investigation into the accident. A preliminary information report was issued on 9 September 2025, noting that the aircraft crashed in a field near the airfield. The cause of the accident has not yet been determined, and no probable cause has been stated by the investigation authority.

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