10/31/2007. This type was designed to the specifications of the US
Army UTTAS (Utility Tactical Transport Aircraft System) competition,
to provide a successor to the UH-1H, the Sikorsky S-70 YUH-60 turned
out as winner.
Three YUH-61A prototypes were flown (73-21656 to 73-21658) the first
on November 29, 1974, the second (pictured) on February 19, 1975, and
the third on May 28, 1975.