US Navy 151361 was retired to MASDC Jul 11, 1984. Sold to to Aero Union Corp as N183AU, later N925AU, which was converted to an air tanker that entered service in 1990. Aero Union shut down in 2011 after the US Forest Service cancelled their contract in July. United Aeronautical Corp eventually bought five of Aero Union's Orions, including this one and moved them to back to Chico to put them up for sale.