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 orthography of the Confederated Tribes of Grand Ronde which differs significantly from the orthographies used by early linguists and diarists recording other versions of the Jargon: Chinook Jargon Chinook Jargon (also known as ', or ') is a nearly extinct American indigenous language originating as a pidgin trade language in the Pacific Northwest, and spreading during the 19th century from the lower Columbia River, first to other areas in modern Oregon and Washington, then British Columbia and as far as Alaska and Yukon Territory, sometimes taking on characteristics of a creole language. It is partly descended from the Chinook language,