Atlanta-based Southern Airways was the last major airline to use the Martin 4-0-4. Altogether 18 aircraft served with the company, with scheduled routes radiating from Atlanta to Dothan, Columbus, Huntsville, Panama City and Muscle Shoals from October 1961 onwards. N144S (c/n 14150) is pictured here in December 1977 in advance of operating the airline's final ever 4-0-4 service on April 30 1978 from Gadsden, Alabama, to Atlanta.
