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.
Winnetka is a village located approximately 14 miles (23 km) north of downtown Chicago in Cook County, Illinois. Winnetka is located at 42°6′22″N 87°44′16″W / 42.10611°N 87.73778°W / 42.10611; -87.73778Coordinates: 42°6′22″N 87°44′16″W / 42.10611°N 87.73778°W / 42.10611; -87.73778 (42.106227, -87.73801).. Winnetka is located 198m (650ft) above sea level and has a magnetic declination of 3° 10' W. According to the United States Census Bureau, the village has a total area of 3.9 square miles, of which 3.8 sq mi (9.8 km) is land and 0.1 sq mi (0.26 km) (2.30%) is water.