Casualties unknown

2025-04-10: BELL HELICOPTER TEXTRON CANADA LIMITED 505 (HB-ZWF) — Petersgrat (LSVP), BE, CH

Petersgrat (LSVP), BE, CH

On April 10, 2025, a BELL HELICOPTER TEXTRON CANADA LIMITED 505 (registration HB-ZWF) was involved in an aviation accident near Petersgrat (LSVP), BE, 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

On 10 April 2025, a Bell 505 helicopter (HB-ZWF) tipped onto its right side while landing on a glacier at Petersgrat, Switzerland. Two of the three occupants sustained serious injuries and the aircraft was severely damaged.

Accident Details

On 10 April 2025 at 10:20 local time, a Bell 505 Jet Ranger X helicopter, registration HB-ZWF, was involved in an accident at Petersgrat (LSVP), Switzerland. The flight was conducted under Visual Flight Rules (VFR) and was a training operation. The helicopter had departed from Bern Airport (LSZB) with Bern as its destination. During landing on the glacier, the helicopter tipped onto its right side.

Aircraft and Occupants

The helicopter was a Bell Helicopter Textron Canada B505 Jet Ranger X, registered as HB-ZWF. The owner was Centaurium Aviation AG, based in Grenchen, and the operator was Mountain Flyers 80 Ltd., based in Belp. On board were two crew members and one passenger. According to the preliminary report, one crew member and the passenger sustained serious injuries. One crew member was not injured. No third parties were involved.

Damage

The aircraft suffered severe damage. No third-party damage occurred.

Investigation

The Swiss Safety Investigation Board (SUST) opened an investigation into the accident. As of the preliminary report dated 15 April 2025, no probable cause has been determined.

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