Incident Sequence
The pilot approached a remote snow-covered mountain site with the helicopter oriented into the wind. During the descent at approximately 50 feet above ground, the wind increased and shifted direction, causing the helicopter to begin descending rapidly. The pilot responded by increasing power to arrest the rate of descent. Shortly thereafter, the low rotor rpm warning horn activated. The helicopter touched down just beyond the intended landing area with sufficient force and forward speed that the pilot could not maintain position on the site.
To prevent the helicopter from falling off a nearby 30-foot drop, the pilot applied forward cyclic. However, due to the low rotor rpm and inability to maintain altitude, the pilot decided to land in a large open snowfield. During the landing, the helicopter settled into the snow, and the main rotor blades contacted the ground. The helicopter subsequently rolled onto its side.
Weather Conditions
The weather at the accident site was reported as high overcast. The wind direction was not specified, but the wind velocity was reported to be 15-20 knots.
Aftermath
No mechanical failures or malfunctions were reported in connection with the accident.