The DC-6 was a scaled-down four-seat version of the six-seat CW-6. It was rolled out in February 1929 and went into production in two versions the DC-6A and DC-6B. Both versions gained type certificates in September 1929. The depression and Wall Street crash reduced demand for the aircraft and only just over 20 of each model were produced. Some aircraft were taken on charge by the USAAC in 1942.