Lockheed began working on a new transport aircraft for the U.S. Navy in 1942. Two aircraft were ordered as XR6O-1.
This aircraft was not given a high priority during the war and it did not make its first flight until 9 November 1946. The aircraft were
underpowered and did not have sufficient range. By 1953, the Navy had exhausted the spare parts for this model and the aircraft
were placed in storage at Litchfield Park, Arizona, they were sold in 1955. The new civilian owners flew one aircraft to Las Vegas, Nevada,
and the second to Opa Locka, Florida, USA, but neither had an Approved Type Certificate (ATC) for civil operation
and the cost to obtain one was prohibitive so both aircraft were unfortunatelly scrapped.