Boeing CH-47 Chinook the CH-47 have been developed since the helicopter entered service. The U.S. Army's first major design leap was the now-common CH-47D, which entered service in 1982. Improvements from the CH-47C included upgraded engines, composite rotor blades, a redesigned cockpit to reduce pilot workload, improved and redundant electrical systems, an advanced flight control system, and improved avionics. The latest mainstream generation is the CH-47F, which features several major upgrades to reduce maintenance, digitized flight controls, and is powered by two 4,733-horsepower Honeywell engines. A commercial model of the Chinook, the Boeing-Vertol Model 234, is used worldwide for logging, construction, fighting forest
Chinook Jargon in British Columbia by gold prospectors and Royal Engineers. As industry developed, Chinook Jargon was often used by cannery workers and hop pickers of diverse ethnic background. Loggers, fishermen and ranchers incorporated it in their jargon. A heavily creolized form of Chinook Jargon (Chinuk Wawa) is still spoken as a first language by some residents of Oregon, much as the Métis language Michif is spoken in Canada. Hence, Chinuk Wawa as it is known in Oregon is now a creole language, distinct from the widespread and widely varied pronunciation of the Chinook Jargon as it spread beyond the Chinookan homeland.