Overview
The incident involved a certificated flight instructor operating a single-engine helicopter on a deer counting mission. The helicopter was hovering out of ground effect when control was lost.
Sequence of Events
According to the pilot's account, the helicopter was hovering into the wind at the time of the occurrence. A "thump" was noted in the flight controls, after which the helicopter made contact with a tree. Following the tree strike, the helicopter entered an uncontrollable right turn. The low-rotor RPM audio warning activated, indicating a drop in rotor speed. The pilot was unable to regain control, and the helicopter descended and came to rest on its left side.
Aftermath
The helicopter sustained damage as a result of the tree contact and the subsequent impact with terrain. The helicopter came to rest in a position on its left side. No further details regarding the extent of damage or any injuries were provided in the source.