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.
Langdon is a city in Cavalier County, North Dakota, in the United States. It is the county seat of Cavalier County. The population was 2,101 at the 2000 census. Langdon was incorporated in 1885 but was designated as the county seat in 1884.