Preliminary data based on the notification from the Norwegian authorities:
During landing at Skogn airport, LN-OTO overflew and approached to land on the grass runway. Wind direction NW, approaching against the wind. The helicopter began to yaw to the left. The commander was unable to stop the rotation, first using right pedal and then applying collective. The helicopter rotated twice, ended on the ground - left skid first and rolled onto its right side.