Background
The company holds a VFR-only 135 certificate and performs daily flights transporting workers to a mine. Before the accident flight, no weather information was obtained from the National Weather Service or the FAA. The pilot checked weather by calling the mine and looking outside. Three aircraft departed on the outbound morning trip; pilots of the other two aircraft reported encountering ceilings, mountain obscurement, and snow showers en route. They turned back, flew south along the mountains, and found a clear area to cross.
Accident Flight
The accident aircraft carried four passengers. According to the passengers, they encountered lowering clouds and snow showers. The pilot turned around, flew south for a while, then headed toward a mountain range saddle. As the aircraft entered the saddle, the clouds became lower and the occupants could not see outside. The pilot attempted to climb, but when trees began flashing past the side windows, he pulled the power off and leveled the wings just before colliding with trees and the snow-covered mountainside.
Result
The aircraft collided with trees and the snow-covered mountainside. No further details about damage, injuries, or fatalities are provided in the source.