Boeing engine started in 1943 and Boeing's gas turbines were designated models 502 (T50), 520 (T60), 540, 551 and 553. Boeing built 2,461 engines before production ceased in April 1968. Many applications of the Boeing gas turbine engines were considered to be firsts, including the first turbine-powered helicopter and boat. Vertol Aircraft Corporation was acquired by Boeing in 1960, and was reorganized as Boeing's Vertol division. The twin-rotor CH-47 Chinook, produced by Vertol, took its first flight in 1961. This heavy-lift helicopter remains a work-horse vehicle to the present day. In 1964, Vertol also began production of the CH-46 Sea Knight.
Billy Chinook 160 feet into Lake Billy Chinook from the precipice of Crooked River Canyon, is known locally (unofficially) as "Billy Chinook Falls". Billy Chinook Billy Chinook was a chief and member of the Wasco tribe. Chinook was a guide for John C. Frémont and Kit Carson, who explored Central Oregon from 1843 to 1844 and from 1845 to 1847. Chinook also served as First Sergeant, U.S. Army Wasco Scouts during the Snake War. Lake Billy Chinook in Oregon is named in his honor. Billy Chinook (aka William Parker) was born circa 1827 in the area that was to become Fort Dalles,