Martin 4-0-4

The Martin 2-0-2, like its direct rival the Convair CV-240, was aimed at the requirement for a postwar DC-3 replacement for short-/medium-haul services. It was also Martin's first low-wing twin-engine type; however, unlike the Convair, it was not pressurized. Early orders from TWA, Northwest and others were promising, but the loss of a Northwest example due to structural failure in 1948 made necessary modification of all existing examples and curtailment of 2-0-2 production. Remedial action, pressurization and other design changes were channelled into the slightly larger Martin Model 4-0-4, which superseded the planned 3-0-3 and gained 101 orders from TWA and Eastern. A total of 148 of all types were built until 1952, and examples served well into the 1980s with commuter airlines. Operational numbers are now in the single figures.

Robert Jackson "The Encyclopedia of Aircraft", 2004

3-View

A three-view drawing (2245 x 1235)