The Sikorsky UH-60 black colored colored Hawk is a "twin-turbine" engine, solitary rotor, semimonocoque fuselage, rotary wing helicopter. The "Ebony Hawk" originated to generally speaking meet with a US Army dependence on a UH-1 Iroquois replacement in 1972. Three prototypes are constructed, initial (YUH-60) traveling in October 1974, and examined against a rival (YUH-61) Boeing-Vertol design. The Ebony Hawk had been certainly chosen for manufacturing alongside UH-60A entered solution using the usa Army in 1979.