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 names throughout this region bear Jargon names (see List of Chinook Jargon placenames) and words are preserved in various rural industries such as logging and fishing. The Chinook Jargon was multicultural and functional. To those familiar with it, Chinook Jargon is often considered a wonderful cultural inheritance. For this reason, and because Jargon has not quite died, enthusiasts actively promote the revival of the language in everyday western speech. The Confederated Tribes of the Grand Ronde Community of Oregon is taking steps to preserve Chinook Jargon use through a full immersion head start/preschool which is conducted in Chinuk Wawa, in