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.
Sherman is a city in and the county seat of Grayson County, Texas, United States. The city's estimated population as of 2008 was 38,077. It is also one of two principal cities in the Sherman-Denison Metropolitan Statistical Area.