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 Chief Maquinna and his brother Callicum performing a theatrical using mock English and mock Spanish words and mimicry of European dress and mannerisms. There evidently was a Jargon in use in the Queen Charlotte, but this "Haida Jargon" is not known to have shared anything in common with Chinook Jargon, or with the Nooktan-Chinookan "proto-jargon" which is its main foundation. Pacific Northwest historians are well acquainted with the Chinook Jargon, in name if not in the ability to understand it. Mentions of and phrases of Chinook Jargon were found in nearly every piece of historical source material before 1900. Chinook