lift capacity by using turboshaft engines. The project was designated Vertol Model 107 (V-107), and a prototype first flew on April 22, 1958. Impressed, the Army awarded a contract for ten production aircraft (then designated YHC-1A) in June and later asked Vertol in March 1959 to produce a larger version, which was designated V-114. With the pressure to produce two relatively new designs, Vertol again ran into financial pressure and was acquired by Boeing on March 30, 1960, who renamed it Boeing Vertol. It became the Boeing Helicopter Division in 1987. Products See also Piasecki Aircraft References Further reading Defunct helicopter manufacturers of the United States Boeing mergers and acquisitions Manufacturing companies based in Philadelphia Manufacturing companies established in 1940 Defunct companies based in Pennsylvania