The Boeing Vertol YUH-61 was the runner-up in the US Army's UTTAS competition for a UH-1 replacement, losing out to the Sikorsky S-70. Three military prototypes were built for evaluation and one Model 179 civil demonstrator, which is shown here at the 1975 Paris Air Show. The type was not proceeded with.

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