EMD SD50

The EMD SD50 is a 3,600-horsepower (2,680 kW) diesel-electric locomotive built by General Motors Electro-Motive Division. It was introduced in May 1981 as part of EMD's "50 Series"; production ceased in January 1986. The SD50 was a transitional model between EMD's Dash 2 series which was produced throughout the 1970s and the microprocessor-equipped SD60 and SD70 locomotives. A total of 523 were built. This included 421 standard cab locomotives for the North American market, 60 built by GMD with a "Draper taper", six short-frame prototypes built before the standard model, 31 built for Saudi Arabia, and additional five being built for use in Australia.