Eastern Airlines was the largest Martin 404 operator with this aircraft in the sixty strong fleet 1952 - 62 as N476A. It became N473M with Mohawk Airlines until sold to Ozark Air Lines in 1965. Sold to Fairchild-Hiller Corporation in 1967 as Ozark replaced the Martins with FH-227s. N473M went through several aircraft brokers in the 70s until acquired by Petroleum Air Transport in 1977. DHL bought PAT Air in 1978 and three 404s were transferred to Honolulu, HI in 1979 to operate for DHL. They never entered service and all three (N469M, N471M and N473M) were scrapped by 1983.