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, Montana by its community. Chinook, Montana Chinook is a city in and the county seat of Blaine County, Montana, United States. The population was 1,203 at the 2010 census. Points of interest are the Bear Paw Battlefield Museum located in the small town's center and the Bear Paw Battlefield, located just twenty miles south of Chinook. Chinook is located at (48.5894, -109.2321). According to the United States Census Bureau, the city has a total area of , all of it land. As of the census of 2010, there were 1,203 people, 599 households, and 313 families residing in the city. The