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.
Bison is a rural unincorporated community located on US Highway 81 in Garfield County, Oklahoma, United States. The post office opened August 31, 1901. The ZIP code is 73720. The community was named for nearby Buffalo Springs.