The first YUH-61 was rolled out of the Boeing Vertol factory in Ridley Park, just west of PHL, on 9 September 1974 and the caption from Veriflite suggests the photo was taken there. The first flight was made from the Grumman factory airfield at Calverton, NY. The UH-61 lost the UTTAS (Utility Tactical Transport Aircraft System) competition to the Sikorsky UH-60. Photo from: Vertical Flight Society

The UH-60 and the AH-64 won, the UH-61 and the AH-63 lost and it seems their manufacturers like to forget about these loser designs. One prototype of a civilian variant of the H-61 was built. It reportedly first flew on 5 August 1975, but was already on display at the Paris Air Show in June. Petroleum Helicopters took options on 28 aircraft, but Boeing cancelled the type after it failed to win military orders. A naval variant, the Model 237, lost out to the SH-61 and was never built. It looks like the photo was taken at the factory in Ridley Park, with the Delaware River in the background, but this is unconfirmed. Photo from: Vertical Flight Society

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 took place at the Grumman factory airfield at Calverton, Long Island. Photo from: Vertical Flight Society