Cases involving individuals who have been injured in crashes and collisions involving helicopters. A Helicopter Accident is an occurrence associated with the operation of an aircraft which takes place between the time any person boards the helicopter with the intention of flight and all such persons have disembarked, in which a person is fatally or seriously injured, the aircraft sustains damage or structural failure and/or the aircraft is missing or is completely inaccessible.
West Yellowstone is a town in Gallatin County, Montana, adjacent to Yellowstone National Park. The population was 1,177 at the 2000 census. The town is served by Yellowstone Airport.