Casualties unknown

2008-03-18: KAMAN AEROSPACE CORPORATION K-1200 (HB-ZGK) — Schwarzenberg, LU, CH

Schwarzenberg, LU, CH

On March 18, 2008, a KAMAN AEROSPACE CORPORATION K-1200 (registration HB-ZGK) was involved in an aviation accident near Schwarzenberg, LU, CH. Investigators recorded the probable cause as: The accident was due to the fact that during the lifting of a multiple load by the helicopter, a dead wood trunk tipped over and touched the forest ranger who was by mistake in the danger zone. 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
Aircraft registered HB-ZGK
Aircraft registered HB-ZGK. Photo: St9191 / CC BY-SA 3.0, via Wikimedia Commons

On 18 March 2008, a Kaman K-1200 K-MAX helicopter (HB-ZGK) operated by Rotex Helicopter AG struck a forest ranger when a dead wood trunk tipped over during a multiple load lifting operation in Eigental, Switzerland.

Introduction

On 18 March 2008, at 10:58 local time, a Kaman K-1200 K-MAX helicopter registered as HB-ZGK and operated by Rotex Helicopter AG was involved in an accident at Buechstägwald, Eigental, in the municipality of Schwarzenberg, approximately 9 km southwest of Lucerne, Switzerland. The helicopter was lifting a multiple load when a dead wood trunk tipped over and struck a forest ranger who was present at the site.

Accident Details

The accident occurred during a logging operation. The helicopter was lifting a load consisting of multiple pieces of wood. As the lift commenced, a dead wood trunk tipped over and contacted the forest ranger, who was positioned in the area. According to the investigation, the forest ranger was by mistake within the danger zone. The nature of injuries or damage to the helicopter is not specified in the source.

Cause

The official investigation determined that the accident was due to the fact that during the lifting of a multiple load, a dead wood trunk tipped over and touched the forest ranger, who was mistakenly in the danger zone. Contributing factors included the decision to carry out transport flights under the prevailing conditions and the forest ranger taking his eyes off the load.

Probable cause

The accident was due to the fact that during the lifting of a multiple load by the helicopter, a dead wood trunk tipped over and touched the forest ranger who was by mistake in the danger zone. Contributing factors were the decision to carry out transport flights in the presence of the prevailing conditions and the fact that the forest ranger took his eyes off the load.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/2081.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.