Title from March 1956 of former Piasecki Helicopter Corporation
of Morton, Pennsylvania. Helicopter products
included Model 107 (civil), and CH-46 Sea Knight for
naval supply. The latter was built by Kawasaki in
Japan in 1978 as KV-107/II. Nearly 600 Vertol H-21 Work
Horse military transport helicopters, Model 43 (military
export version) and Model 44 (commercial transport based
on H-21) were completed. Tilt-wing Model 76 VTOL
research aircraft evaluated by USAF as VZ-2. Model
114/CH-47 Chinook heavylift military helicopter begun by
Vertol, but primary development and production by Boeing
Vertol. Company became Vertol Division of the Boeing
Company on 31 March 1960, later known as Boeing
Vertol Company.
