THOMPSON FALLS - An investigation is underway to determine the cause of the helicopter crash near Thompson Falls on Saturday, which killed one of three passengers aboard.
The three people in the helicopter were conducting a survey of power lines when the aircraft went down in the Prospect Creek drainage outside of Thompson Falls, said Tom Little, an investigator with the National Transportation Safety Board.
On Sunday, the cause of the crash hadn’t yet been determined, but one of the survivors said the helicopter was suddenly of control and then crashed, Little said.
There were no power outages in the area at the time the trio were conducting their survey, according to Little, who gained the information from Tom Rummel, Sanders County sheriff.
Neither Rummel nor Little would release information about the helicopter passengers, their employer or the owner of the helicopter.