Ex 48-0581, civil registered in 1955 as N4752C to an Anchorage based owner. Bought by Northern Air Cargo in May 1970 and flown by them until damaged in an accident in April 1982. Withdrawn from use in 1985 and purchased in June 1986 by Daryl Greenamyer who ferried it to the US Air Force Museum at Wright Patterson on 30th June 1988. Initially displayed as 45-57735, it has now been re-painted with its original serial as 80581 and has been displayed in Hangar 4 since it opened in 2016.