Sikorsky S-70 - Wikipedia
https://en.wikipedia.org/wiki/Sikorsky_S-70The S-70 family was developed to meet a United States Army requirement to replace the UH-1 Iroquois family of utility medium-lift helicopters in 1972. Three YUH-60A prototypes were constructed, with the first flying in October 1974. They were evaluated against the Boeing-Vertol YUH-61A. The YUH-60A was selected for production, and entered service as the UH-60A Black Hawkwith the U.S. Ar…
Sikorsky Archives | S-70A
www.sikorskyarchives.com › S-70A (UH-60A Black HawkS-70A (UH-60A Black Hawk, YEH-60B SOTAS, EH-60A Quick Fix) Background The UH-60A was the first model of the long Black Hawk helicopter series that officially started on December 23, 1976 when Sikorsky was selected by the U.S. Army to build a production version of its YUH-60A Utility Tactical Transport Aircraft System (UTTAS) prototype.
Sikorsky S-70 - Wikipedia
en.wikipedia.org › wiki › Sikorsky_S-70The S-70A Firehawk is a version of the S-70 designed for firefighting, rescue, medical evacuation, and external lift of bulky cargo and equipment. The Oregon National Guard was the first military organization in the world to add the Firehawk to its inventory; the Los Angeles County Fire Department was the first municipal organization.