Editing Boeing CH-47 Chinook (section)

===Improved and later versions===
[[File:JG-2923 rear door ramp.jpg|thumb|left|A Chinook with its rear ramp lowered]]

Improved and more powerful versions of the CH-47 have been developed since the helicopter entered service. Often the same airframe was upgraded to later standards, or sometimes the airframes were built to the newer upgrade. 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.<ref>{{cite news |url= http://nl.newsbank.com/nl-search/we/Archives?p_product=PI&s_site=philly&p_multi=PI&p_theme=realcities&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=0EB293DCB78A3557&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |title= This Whirlybird's an early bird: Boeing Vertol's Army copter delivered on budget |first= Tom |last= Belden |website= The Philadelphia Inquirer |date= 21 May 1982 |access-date= 5 April 2010 |archive-url= https://web.archive.org/web/20110608230930/http://nl.newsbank.com/nl-search/we/Archives?p_product=PI&s_site=philly&p_multi=PI&p_theme=realcities&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=0EB293DCB78A3557&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |archive-date= 8 June 2011 |url-status= live}}</ref> The latest (2009) mainstream generation is the CH-47F, which features several major upgrades to reduce maintenance, digitized flight controls, and is powered by two {{convert|4733|hp|kW|adj=on}} Honeywell engines.<ref name="boeing">{{cite web |url= http://boeing.mediaroom.com/index.php?s=43&item=784 |title= Boeing Receives $1.15B Contract for 15 Canadian Chinooks, Announces Matching Reinvestment in Industry |publisher= Boeing |date= 10 August 2009 |access-date= 11 August 2009 |archive-url= https://web.archive.org/web/20110725093825/http://boeing.mediaroom.com/index.php?s=43&item=784 |archive-date= 25 July 2011 |url-status= live}}</ref>

[[File:CH-47_Cockpit.jpg|thumb|CH-47 cockpit view, 2022]]
An example of a British upgraded version is the HC.4; the first HC.4 first flew on 9 December 2010.<ref>Parsons, Gary. [http://www.key.aero/view_news.asp?ID=2915&thisSection=military "First Project Julius Chinook flies"] {{webarchive |url=https://web.archive.org/web/20120314151556/http://www.key.aero/view_news.asp?ID=2915&thisSection=military |date=14 March 2012 }}. Key Publishing via key.aero, 24 January 2011.</ref>
A commercial model of the Chinook, the Boeing-Vertol Model 234, is used worldwide for logging, construction, fighting forest fires, and supporting petroleum extraction operations. In December 2006, [[Columbia Helicopters]] Inc purchased the [[type certificate]] of the Model 234 from Boeing.<ref>{{cite web |title= Type Certificate Data Sheet No. H9EA |publisher= Federal Aviation Administration |date= 17 January 2007 |url= http://www.airweb.faa.gov/Regulatory_and_Guidance_Library%5CrgMakeModel.nsf/0/84EBE8780BF584058625726B00657D0E/$FILE/H9EA.pdf |archive-url= https://wayback.archive-it.org/all/20070614191643/http://www.airweb.faa.gov/Regulatory_and_Guidance_Library%5CrgMakeModel.nsf/0/84EBE8780BF584058625726B00657D0E/$FILE/H9EA.pdf |url-status= dead |archive-date= 14 June 2007 |format= .pdf |access-date= 8 February 2007}}</ref> The Chinook has also been licensed to be built by companies outside the United States, such as [[Agusta]] (now [[AgustaWestland]]) in Italy and [[Kawasaki Heavy Industries|Kawasaki]] in Japan.<ref>{{cite press release |date=2013-06-26 |title=AW1067 ICH-47F Maiden Flight |url=https://www.leonardocompany.com/en/press-release-detail/-/detail/aw1067i-ch-47-f-maiden-flight |location=Vergiate |publisher=Leonardo |access-date=2021-12-20}}</ref><ref>{{cite web|title=CH-47JA Helicopter|access-date=2021-12-20|publisher=Kawasaki|url=https://global.kawasaki.com/en/mobility/air/helicopters/ch_47j.html}}</ref>