Investigation leb by Switzerland - STSB

Accident to the Guimbal Cabri G2 registered HB-ZVN and to the Bell 505 registered HB-ZYN on 11/11/2020 at Sion

Preliminary data based on the notification from the Swiss authorities:

During take-off, the yaw control of the helicopter is lost. The helicopter falls to the ground from a few meters and collides with a second helicopter with no occupants.