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.
Crystal City is a city in Jefferson County, Missouri, United States. The population was 4,538 at the estimated 2008 census. It was 4,247 at the 2000 census. Crystal City and its neighbor Festus are often collectively known as the "Twin Cities"; however, they are incorporated separately.