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.
Troy Mills is an unincorporated community in northern Linn County, Iowa, United States. It lies along local roads north of the city of Cedar Rapids, the county seat of Linn County. Its elevation is 869 feet (265 m), and it is located at 42°17′24″N 91°40′57″W / 42.29°N 91.6825°W / 42.29; -91.6825 (42.2899905, -91.6823925). Although Troy Mills is unincorporated, it has a post office, with the ZIP code of 52344, which opened on 10 June 1867.