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.
Portland is a city in Sumner and Robertson counties in the U.S. state of Tennessee, and is also a part of the Nashville Metropolitan Statistical Area The population was 10,986 at the 2007 census.