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.
Chinook Jargon a hundred years old, like Henry Broderick, the realtor, and Joshua Green, the banker." Jones estimates that in pioneer times in the 1860s there were about 100,000 speakers of Chinook Jargon. Most books written in English still use the term Chinook Jargon, but some linguists working with the preservation of a creolized form of the language used in Grand Ronde, Oregon prefer the term "Chinuk Wawa" (with the spelling 'Chinuk' instead of 'Chinook'). Historical speakers did not use the name "Chinook Wawa", however, but rather ""the Wawa"" or ""Lelang"" (from Fr. "la langue", the language, or tongue). NB "Wawa" also