Editing Boeing 737 (section)

=== 737 NG (third generation) ===
{{main|Boeing 737 Next Generation}}

The ''Boeing 737 Next Generation'', abbreviated as ''737 Next Gen'' or ''737NG'', is the name given to the -600, -700, -800 and -900 variants. It has been produced since 1996 and introduced in 1997, with a total order of 7,097 aircraft, of which 7,031 have been delivered {{as of|2019|May|df=|lc=y}}.<ref name=O_D_summ /><ref name="Flying blind" /> The primary goal was to re-engine the 737 with the high bypass ratio [[CFM International CFM56|CFM56-7]]. By the early 1990s, as the MD-80 slowly withdrew from the competition following the introduction of the MD-90, it had become clear that the new A320 family was a serious threat to Boeing's market share. Airbus won previously loyal 737 customers, such as Lufthansa and United Airlines. In November 1993, to stay in the single aisle competition, Boeing's board of directors authorized the Next Generation program to mainly upgrade the [[Boeing 737 Classic|737 Classic]] series.<ref>[http://www.boeing.com/commercial/737family/pf/pf_ng_milestones.html "Next Generation 737 Program Milestones."] {{Webarchive|url=https://web.archive.org/web/20080125233751/http://www.boeing.com/commercial/737family/pf/pf_ng_milestones.html |date=January 25, 2008}} ''The Boeing Company.'' Retrieved: January 22, 2008.</ref> In late 1993, after engineering trade studies and discussions with major customers, Boeing proceeded to launch a second derivative of the Boeing 737, the [[Boeing 737 Next Generation|737 Next Generation]] (NG) -600/700/800/900 series.<ref name=O_D_summ /> It featured a redesigned wing with a wider wingspan and larger area, greater fuel capacity, longer range and higher [[maximum takeoff weight|MTOWs]]. It was equipped with [[CFM International CFM56#CFM56-7 series|CFM56-7]] high pressure ratio engines, a [[glass cockpit]], and upgraded interior configurations. The four main models of the series can accommodate seating for 108 to 215 passengers. It was further developed into additional versions such as the corporate [[Boeing Business Jet]] (BBJ) and military [[Boeing P-8 Poseidon|P-8 Poseidon]] aircraft. Following the merger between Boeing with McDonnell Douglas in 1997, the primary competitor for the 737NG series remained only the A320 family.

==== 737-600 ====
[[File:Sas b737-600 ln-rcw arp.jpg|thumb|737-600 of [[Scandinavian Airlines]], the launch customer]]
The 737-600 was the smallest of the Next-Generation models, replacing the 737-500. It had no winglets and was similar in size to the [[Airbus A318]]. Launch customer [[Scandinavian Airlines]] (SAS) placed its order in March 1995 and took the first delivery in September 1998.<ref>{{cite news |url= https://www.flightglobal.com/news/articles/putting-the-family-to-work-51106/ |title= Putting the family to work |date= May 12, 1999 |magazine= Flight International |author= Andrew Doyle |author2= Max Kingsley-Jones |author3= Paul Lewis |author4= Guy Norris |access-date= June 11, 2018 |archive-url= https://web.archive.org/web/20180612145307/https://www.flightglobal.com/news/articles/putting-the-family-to-work-51106/ |archive-date= June 12, 2018 |url-status= live}}</ref> A total of 69 aircraft were produced, with the last one delivered to [[WestJet]] in 2006.<ref name=O_D_summ />

==== 737-700 ====
[[File:N785SW BWI MD1.jpg|thumb|737-700 of [[Southwest Airlines]], the launch customer]]
The 737-700, the first variant of the Next-Generation, was launched in November 1993 with an order of 63 aircraft. The -700 seats 126 passengers in a two-class or 149 passengers in a one-class layout. Launch customer [[Southwest Airlines]] took the first delivery in December 1997.<ref name=Boeing17dec1997>{{cite press release |url= http://boeing.mediaroom.com/1997-12-17-First-Boeing-737-700-Goes-to-Southwest-Airlines |title= First Boeing 737-700 Goes to Southwest Airlines |date= December 17, 1997 |publisher= Boeing |access-date= June 11, 2018 |archive-url= https://web.archive.org/web/20180609005014/http://boeing.mediaroom.com/1997-12-17-First-Boeing-737-700-Goes-to-Southwest-Airlines |archive-date= June 9, 2018 |url-status= live}}</ref> The 737-700 replaced the 737-300 and competes with the [[Airbus A319]].

The ''737-700C'' is a convertible version where the seats can be removed to carry cargo instead. There is a large door on the left side of the aircraft. The [[United States Navy]] was the launch customer for the 737-700C under the military designation [[Boeing C-40 Clipper|C-40 Clipper]].<ref>[http://www.defenselink.mil/releases/release.aspx?releaseid=2647 "U.S. Naval Reserve Gets First Look at Newest Class of Aircraft"] {{Webarchive|url=https://web.archive.org/web/20080527061741/http://www.defenselink.mil/releases/release.aspx?releaseid=2647 |date=May 27, 2008}}. ''DefenseLink (U.S. Department of Defense)''. Retrieved January 21, 2008.</ref>

The ''737-700ER'' (Extended [[Range (aircraft)|Range]]) was launched on January 31, 2006, and featured the fuselage of the 737-700 and the wings and landing gear of the 737-800.<!--<ref name=Boeing31jan2006>--> A 737-700ER can typically accommodate 126 passengers in two classes with a range similar to the [[Airbus A319LR]].<ref>{{cite press release |url= http://boeing.mediaroom.com/2007-02-16-Boeing-Delivers-First-737-700ER-to-Launch-Customer-ANA |title= Boeing Delivers First 737-700ER to Launch Customer ANA |publisher= Boeing |date= February 16, 2007 |access-date= June 11, 2018 |archive-url= https://web.archive.org/web/20180612141757/http://boeing.mediaroom.com/2007-02-16-Boeing-Delivers-First-737-700ER-to-Launch-Customer-ANA |archive-date= June 12, 2018 |url-status= live}}</ref>

==== 737-800 ====
[[File:D-ATUF B737-8K5W TUIfly-Hapag retro PMI 26SEP10 (6341092368).jpg|thumb|737-800 of [[Hapagfly|Hapag-Lloyd]], the launch customer]]
The 737-800 was a stretched version of the 737-700 launched on September 5, 1994, and first flew on July 31, 1997.<ref>{{cite press release|url=https://boeing.mediaroom.com/1997-07-31-Longest-Boeing-737-Makes-First-Flight|date=July 31, 1997|access-date=January 14, 2025|publisher=Boeing|title=Longest Boeing 737 Makes First Flight}}</ref> The -800 seats 162 passengers in a two-class or 189 passengers in a high-density, one-class layout. Launch customer [[Hapagfly|Hapag-Lloyd Flug]] (now [[TUIfly]]) received the first one in April 1998.<ref>{{cite press release |url= https://boeing.mediaroom.com/1998-04-23-First-Boeing-Next-Generation-737-800-Goes-To-Hapag-Lloyd |title= First Boeing Next-Generation 737-800 Goes To Hapag-Lloyd |date= April 23, 1998 |publisher= Boeing |access-date= September 5, 2020 |archive-date= September 15, 2020 |archive-url= https://web.archive.org/web/20200915184844/https://boeing.mediaroom.com/1998-04-23-First-Boeing-Next-Generation-737-800-Goes-To-Hapag-Lloyd |url-status= live}}</ref> The 737-800 replaced directly the -400 and aging 727-200 of US airlines. It filled also the gap left by Boeing's decision to discontinue the MD-80 and [[McDonnell Douglas MD-90|MD-90]] aircraft, following Boeing's merger with [[McDonnell Douglas]]. The 737-800 is the most widely used narrowbody aircraft and competes primarily with the Airbus A320.<ref name=B738>{{cite web|url=https://www.mro-network.com/airframe/boeing-737-800-not-expected-peak-until-2021|title=Inside MRO: Boeing 737-800 Not Expected To Peak Until 2021|last=Derber|first=Alex|work=MRO Network |date=June 14, 2018|publisher=Aviation Week & Space Technology|access-date=August 17, 2018|archive-url=https://web.archive.org/web/20180818052311/https://www.mro-network.com/airframe/boeing-737-800-not-expected-peak-until-2021|archive-date=August 18, 2018|url-status=live}}</ref>

==== 737-900 ====
[[File:Lionair 737-900 ER first flight.jpg|thumb|First flight of the 737-900ER in September&nbsp;2006. The aircraft has Boeing's livery on the fuselage and launch customer [[Lion Air]] on the vertical stabilizer. The added exit door is visible aft of the wing.]]

The 737-900 was launched in November 1997 and took its first flight on August 3, 2000.<ref>{{cite press release|url=https://boeing.mediaroom.com/1997-11-10-Alaska-Airlines-Order-Launches-Boeing-737-900-Program|title=Alaska Airlines Order Launches Boeing 737-900 Program|date=November 10, 1997|publisher=Boeing|access-date=January 14, 2025}}</ref><ref>{{cite press release|url=https://boeing.mediaroom.com/2000-08-03-Boeing-Next-Generation-737-900-Takes-First-Flight|title=Boeing Next-Generation 737-900 Takes First Flight|date=August 3, 2000|publisher=Boeing|access-date=January 14, 2025}}</ref> It is longer than the -800, but retains the [[Maximum Takeoff Weight|MTOW]], fuel capacity, and exit configuration of the -800, essentially trading range for capacity. The exit configuration limits its seat capacity to approximately 177 in a two class and 189 in a high-density, one class layout. Launch customer [[Alaska Airlines]] received the first delivery on May 2001.<ref>{{cite press release|url=https://boeing.mediaroom.com/2001-05-16-Alaska-Airlines-Receives-First-Boeing-737-900|date=May 16, 2001|title=Alaska Airlines Receives First Boeing 737-90|access-date=January 14, 2025|publisher=Boeing}}</ref>

The ''737-900ER'' (Extended Range), the newest and largest variant of the 737NG generation, was launched in July 2005, first flew in September 2006, and first delivered to launch customer [[Lion Air]] in April 2007.<ref>{{cite news|url=https://www.flightglobal.com/boeing-performs-first-flight-of-737-900er-extended-range-737/69437.article|last=Reals|first=Kerry|date=September 5, 2006|access-date=January 14, 2025|title=Boeing performs first flight of 737-900ER, extended range 737|publisher=FlightGlobal}}</ref><ref name="boeingPR2007">{{cite press release|url=https://boeing.mediaroom.com/2007-04-27-Boeing-Delivers-First-737-900ER-to-Launch-Customer-Lion-Air|title=Boeing Delivers First 737-900ER to Launch Customer Lion Air|date=April 27, 2007|access-date=January 14, 2025|publisher=Boeing}}</ref> An additional pair of exit doors and a flat [[rear pressure bulkhead]] increased its seating capacity to 180 passengers in a two-class and up to 220 passengers in a one-class configuration.<ref>{{cite web|url=http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/9dd07e4b4293722e86257dfc006774ca/$FILE/A16WE_Rev_54.pdf|title=FAA Type Certificate Data Sheet|access-date=July 1, 2015|archive-url=https://web.archive.org/web/20161225060506/http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/9dd07e4b4293722e86257dfc006774ca/$FILE/A16WE_Rev_54.pdf|archive-date=December 25, 2016|url-status=live}}</ref>

The -900ER partly closed the gap left by the discontinuation of the [[Boeing 757-200]], and directly competes with the [[Airbus A321]].<ref>{{Cite web |last=Schofield |first=Adrian |date=July 20, 2005 |title=Boeing's 737-900ER Seen As Direct Competitor To A321 |url=http://www.aviationweek.com/aw/generic/story_generic.jsp?channel=aviationdaily&id=news/739B07205.xml |url-status=dead |archive-url=https://web.archive.org/web/20120322021345/http://www.aviationweek.com/aw/generic/story_generic.jsp?channel=aviationdaily&id=news%2F739B07205.xml |archive-date=March 22, 2012 |access-date=July 3, 2015 |website=Aviation Week & Space Technology}}</ref>