The Sikorsky S-70 is a medium transport/utility helicopter family manufactured by Sikorsky Aircraft. It was developed for the U.S. Army in the 1970s, winning a competition to be designated the UH-60 Blackhawk and spawning a large family in U.S. military service. Civilian versions, and some military versions are produced under various S-70 model designations.
The S-70 family was developed to meet a US Army requirement to replace the venerable UH-1...
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The Sikorsky S-70 is a medium transport/utility helicopter family manufactured by Sikorsky Aircraft. It was developed for the U.S. Army in the 1970s, winning a competition to be designated the UH-60 Blackhawk and spawning a large family in U.S. military service. Civilian versions, and some military versions are produced under various S-70 model designations.
The S-70 family was developed to meet a US Army requirement to replace the venerable UH-1 Iroquois family of utility medium-lift helicopters in 1972. Three prototypes were constructed, the first (YUH-60A) flying in October 1974, and evaluated against the Boeing-Vertol YUH-61A. The YUH-60A was selected for production, and entered service as the UH-60A Black Hawk with the US Army in 1979. In the late 1980s the model was upgraded to the UH-60L, which featured more power and lift with the upgrade to the -701C model of the GE engines.
Newer models are being engineered, which will extend the service life of both UH-60As and UH-60Ls well...
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