GE Dash 9-44CW BC Rail #4650

Technical Specifics

The GE Dash 9-44CW emerged in 1993 as part of General Electric Transportation's evolution of its successful line of high-horsepower road locomotives. Building on lessons learned from earlier Dash 7 and Dash 8 series locomotives, GE engineers developed the Dash 9 platform with particular attention to improved reliability, reduced maintenance intervals, and greater fuel efficiency. The locomotive made its debut with orders from several major North American freight railroads, including the Atchison, Topeka and Santa Fe Railway, Chicago and North Western Railway, Southern Pacific, and Union Pacific, reflecting broad industry confidence in the new design. Over the course of its production run, which extended through 2004, GE built approximately 3,737 examples of the type. The Dash 9-44CW proved to be one of the most commercially successful diesel locomotives of its era, finding service across a wide range of operating environments and traffic types. Burlington Northern Santa Fe, formed through the 1995 merger of Burlington Northern and the Santa Fe, became one of the largest operators of the type. Canadian National Railway and BC Rail also acquired the locomotives for service in Canada. CSX Transportation purchased examples as well, though that railroad simultaneously showed a preference for the AC4400CW, the alternating-current traction version of the same basic platform. Norfolk Southern, notably, opted instead for the closely related Dash 9-40CW, though between 2013 and 2014 the railroad upgraded its fleet of those units to full Dash 9-44CW specification. Production of the Dash 9-44CW came to an end after model year 2004, when more stringent exhaust emissions regulations took effect in the United States on January 1, 2005. GE replaced it in production with the ES44DC, which met the new Tier 2 standards while delivering comparable performance. The Dash 9 platform's influence extended beyond North America, as derivative designs were developed for international markets, including the GE C38AChe built for operation on the demanding high-altitude Qinghai-Tibet Railway in China. BNSF has continued to modify portions of its inherited fleet, with some former Santa Fe C44-9Ws rebuilt as AC44C4M units featuring alternating-current traction motors and revised wheel arrangements patterned on technology from the later ES44C4.

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