The YUH-61 lost the United States Army Utility Tactical Transport Aircraft System (UTTAS) competition in the early 1970s to replace the Bell UH-1 Iroquois helicopter. Only three prototypes were built. At the end of the flyoff program, Sikorsky Aircraft was awarded a contract to develop and build its UH-60A entry. Preserved at the museum by 1982.

The YUH-61 was Boeing Vertol's unsuccessful competitor to Sikorsky's Black Hawk. The need to fit in a C-130 was even more appararent in this design. The photo shows the type's first flight, which does not seem to have taken place at the Ridley Park factory. Photo from: Vertical Flight Society