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.
Imperial is a census-designated place (CDP) in Jefferson County, Missouri, United States. The estimated population in 2007 was 4,747. It was 4,373 at the 2000 census. It was originally known as West Kimmswick, and is roughly 25 driving minutes south of St. Louis. St. John's Church is a historic parish church located within Imperial.