Editing Boeing 737 (section)

== Other variants ==

=== 737 AEW&C ===
[[File:공중조기경보통제기 (7445565660).jpg|thumb|upright|The [[Boeing 737 AEW&C]] is an [[Airborne Early Warning and Control]] version of the 737-700.]]
{{main|Boeing 737 AEW&C}}

The [[Boeing 737 AEW&C]] is a 737-700IGW roughly similar to the 737-700ER. This is an [[Airborne Early Warning and Control]] (AEW&C) version of the 737NG. [[Royal Australian Air Force|Australia]] is the first customer (as Project Wedgetail), followed by [[Turkey]] and South Korea.{{citation needed|date=April 2022}}

=== T-43/CT-43A ===
{{main|Boeing T-43}}[[File:T-43 2.jpg|thumb|upright|The [[Boeing T-43|T-43]] was a 737-200 used by the [[United States Air Force]] to train navigators.]]The [[Boeing T-43|T-43]] was a 737-200 modified for use by the [[United States Air Force]] for training navigators, now known as USAF [[combat systems officer]]s. Informally referred to as the ''Gator'' (an abbreviation of "navigator") and "Flying Classroom", nineteen of these aircraft were delivered to the [[Air Training Command]] at [[Mather AFB]], California during 1973 and 1974. Two additional aircraft were delivered to the [[Colorado Air National Guard]] at [[Buckley AFB|Buckley ANGB]] (later [[Buckley AFB]]) and [[Peterson AFB]], Colorado, in direct support of cadet air navigation training at the nearby [[U.S. Air Force Academy]].{{citation needed|date=April 2022}}

Two T-43s were later converted to CT-43As, similar to the CT-40A Clipper below, in the early 1990s and transferred to [[Air Mobility Command]] and [[United States Air Forces in Europe]], respectively, as executive transports. A third aircraft was also transferred to [[Air Force Materiel Command]] for use as a radar test bed aircraft and was redesignated as an NT-43A. The T-43 was retired by the [[Air Education and Training Command]] in 2010 after 37 years of service.<ref>{{Cite web|title=Air Force bids farewell to T-43|url=http://www.airforcetimes.com/news/2010/09/air-force-t43-farewell-091710/|publisher=Army Times Publishing Company|author=Michelle Tan|access-date=January 10, 2020|archive-date=July 2, 2012|archive-url=https://archive.today/20120702221111/http://www.airforcetimes.com/news/2010/09/air-force-t43-farewell-091710/|url-status=live}}</ref>

=== C-40 Clipper ===
[[File:US Navy 100126-N-0705K-003 Naval Air Crewmen 2nd Class Nicole Garza and David Murray and Naval Air Crewman 1st Class David McDermott load cargo bound for Haiti at Naval Air Station Jacksonville.jpg|thumb|The [[Boeing C-40 Clipper]] is a military version of the 737-700C.|219x219px]]
{{main|Boeing C-40 Clipper}}

The [[Boeing C-40 Clipper]] is a military version of the 737-700C NG. It is used by both the [[United States Navy]] and the [[United States Air Force]], and has been ordered by the [[United States Marine Corps]].<ref name="fg181205">{{Cite web |url = https://www.flightglobal.com/news/articles/us-marine-corps-looks-to-buy-two-c-40-executive-tran-454181/ |title = US Marine Corps looks to buy two C-40 executive transports |first = Garrett |last = Reim |date = December 5, 2018 |website = [[FlightGlobal]] |via = Flightglobal.com |access-date = May 29, 2019 |archive-url = https://web.archive.org/web/20190425091848/https://www.flightglobal.com/news/articles/us-marine-corps-looks-to-buy-two-c-40-executive-tran-454181/ |archive-date = April 25, 2019 |url-status = live}}</ref> Technically, only the Navy C-40A variant is named "Clipper", whereas the USAF C-40B/C variants are officially unnamed.

=== P-8 Poseidon ===
{{main|Boeing P-8 Poseidon}}
[[File:US Navy P-8 Poseidon taking off at Perth Airport.jpg|thumb|The [[Boeing P-8 Poseidon|P-8 Poseidon]] is a 737-800 variant for [[anti-submarine warfare]], [[anti-surface warfare]], and [[blockade|shipping interdiction]].|219x219px]]

The [[Boeing P-8 Poseidon|P-8 Poseidon]] developed for the [[United States Navy]] by [[Boeing Defense, Space & Security]], based on the Next Generation 737-800ERX. The P-8 can be operated in the [[anti-submarine warfare]] (ASW), [[anti-surface warfare]] (ASUW), and [[blockade|shipping interdiction]] roles. It is armed with [[torpedo]]es, [[Harpoon (missile)|Harpoon anti-ship missiles]] and other weapons, and is able to drop and monitor [[sonobuoy]]s, as well as operate in conjunction with other assets such as the [[Northrop Grumman MQ-4C Triton]] maritime surveillance [[unmanned aerial vehicle]] (UAV).

=== VC-96 ===
The VC-96 designation was applied to two 737-2N3s operated by the [[Brazilian Air Force]]'s [[Brazilian Air Force One|Special Transport Group]] (GTE).<ref>{{Cite web |title=Brazilian Military Aircraft Designations |url=https://designation-systems.net/non-us/brazil.html |access-date=2025-03-17 |website=designation-systems.net}}</ref><ref>{{Cite web |date=2023-03-22 |title=Grupo de Transporte Especial – História da Força Aérea Brasileira |url=https://historiadafab.rudnei.cunha.nom.br/2021/01/06/grupo-de-transporte-especial/ |access-date=2025-03-17 |language=pt-BR}}</ref>

=== Boeing Business Jet (BBJ) ===
{{main|Boeing Business Jet}}
[[File:Boeing 737-75V BBJ AN1425895.jpg|thumb|upright|BBJ cabin example]]

In the late 1980s, Boeing marketed the 77-33 jet, a business jet version of the 737-300.<ref>Endres 2001.</ref> The name was short-lived. After the introduction of the Next Generation series, Boeing introduced the Boeing Business Jet (BBJ) series. The BBJ1 was similar in dimensions to the 737-700 but had additional features, including stronger wings and landing gear from the 737-800, and had increased range over the other 737 models through the use of extra fuel tanks. The first BBJ rolled out on August 11, 1998, and flew for the first time on September 4.{{Citation needed|date=August 2024}}

On October 11, 1999, Boeing launched the BBJ2. Based on the 737-800, it is {{Convert|5.84|m|ftin|sp=us|order=flip}} longer than the BBJ1, with 25% more cabin space and twice the baggage space, but has slightly reduced range. It is also fitted with auxiliary belly fuel tanks and winglets. The first BBJ2 was delivered on February 28, 2001.{{Citation needed|date=August 2024}}

Boeing's BBJ3 is based on the 737-900ER. The BBJ3 has {{Convert|1120|sqft|m2}} of floor space, 35% more interior space, and 89% more luggage space than the BBJ2. It has an auxiliary fuel system, giving it a range of up to {{Convert|4725|nmi}}, and a [[Head-up display]]. Boeing completed the first example in August 2008. This aircraft's cabin is pressurized to a simulated {{Convert|6500|ft|m|adj=on}} altitude.<ref>{{cite web|title=Boeing Business Jets Launches New Family Member|url=http://boeing.mediaroom.com/2006-10-16-Boeing-Business-Jets-Launches-New-Family-Member|publisher=Boeing|access-date=November 22, 2014|date=October 16, 2006|archive-date=November 29, 2014|archive-url=https://web.archive.org/web/20141129065426/http://boeing.mediaroom.com/2006-10-16-Boeing-Business-Jets-Launches-New-Family-Member|url-status=live}}</ref><ref>{{cite web|title=Boeing Completes First BBJ 3|url=https://www.wingsmagazine.com/news/boeing-completes-first-bbj-3-1833|website=www.wingsmagazine.com|publisher=Wings|access-date=November 22, 2014|date=August 14, 2008|archive-date=December 14, 2014|archive-url=https://web.archive.org/web/20141214023900/https://www.wingsmagazine.com/news/boeing-completes-first-bbj-3-1833|url-status=live}}</ref>

=== Boeing Converted Freighter program ===
The Boeing Converted Freighter program (BCF), or the 737-800BCF program, was launched by Boeing in 2016. It converts old 737-800 passenger jets to dedicated freighters.<ref>{{Cite news|url=https://www.flightglobal.com/news/articles/boeing-launches-737-800bcf-programme-422323/|title=Boeing launches 737-800BCF programme|date=February 24, 2016|work=Flightglobal.com|access-date=April 30, 2018|language=en-GB|archive-date=July 25, 2018|archive-url=https://web.archive.org/web/20180725184044/https://www.flightglobal.com/news/articles/boeing-launches-737-800bcf-programme-422323/|url-status=live}}</ref> The first 737-800BCF was delivered in 2018 to GECAS, which is leased to [[West Atlantic UK|West Atlantic]].<ref>{{Cite news|url=https://www.flightglobal.com/news/articles/boeing-delivers-first-737-800bcf-to-west-atlantic-447850/|title=Boeing delivers first 737-800BCF to West Atlantic|date=April 20, 2018|work=Flightglobal.com|access-date=April 30, 2018|language=en-GB|archive-date=April 30, 2018|archive-url=https://web.archive.org/web/20180430115208/https://www.flightglobal.com/news/articles/boeing-delivers-first-737-800bcf-to-west-atlantic-447850/|url-status=live}}</ref> Boeing has signed an agreement with Chinese YTO Cargo Airlines to provide the airline with 737-800BCFs pending a planned program launch.<ref>[http://www.aviationanalysis.net/2015/10/boeing-to-launch-737-freighter-conversion.html "Boeing to launch 737 freighter conversion program"] {{Webarchive|url=https://web.archive.org/web/20151003085815/http://www.aviationanalysis.net/2015/10/boeing-to-launch-737-freighter-conversion.html |date=October 3, 2015}}. aviationanalysis.net</ref>

=== Experimental ===
{{main|ecoDemonstrator}}
Four 737 aircraft have been used in Boeing test programs. In 2012, a new 737-800 bound for American Airlines became the first [[ecoDemonstrator]] airframe in a program that continues annually into the 2020s. In conjunction with many industry partners, the program aims to reduce the [[environmental impact of aviation]]. In 2012 it tested the winglets which would eventually be used in the 737 MAX series.<ref name="Key2018">{{cite web |last1=Broadbent |first1=Mark |title=Commercial Boeing ecoDemonstrator |url=https://www.key.aero/article/triple-seven-testbed |website=Key.Aero |publisher=Key Publishing Ltd. |access-date=October 19, 2022 |date=June 27, 2019}}</ref> Testing also included a variable area exhaust nozzle, regenerative hydrogen [[fuel cell]]s for electrical power, and [[sustainable aviation fuel]] (SAF).

In 2018, one of the 737 MAX 7 prototypes participated in Boeing's [[Quiet Technology Demonstrator]] 3 (QTD3) program, in which a [[NASA]] engine inlet designed to reduce engine noise was tested over an [[Sensor array|acoustic array]] at [[Grant County International Airport|Moses Lake]], [[Washington (state)|Washington]].<ref>{{cite web |last1=Womg |first1=Jackie W. |last2=Nesbitt |first2=Eric H. |last3=Jones |first3=Michael G. |last4=Nark |first4=Douglas M. |title=Flight Test Methodology for NASA Advanced Inlet Liner on 737MAX-7 Test Bed (Quiet Technology Demonstrator 3) |url=https://ntrs.nasa.gov/api/citations/20200002460/downloads/20200002460.pdf?attachment=true |website=2019 AIAA Aeroacoustics Conference |publisher=NASA |access-date=November 21, 2022 |date=May 20, 2019}}</ref>

A 737 MAX 9 was used as the 2021 ecoDemonstrator. A new airframe in a special Alaska Airlines livery flew an extensive test program, a major part of which was the use of SAF in blends of up to 50% including a flight from Seattle to [[Glasgow]], [[Scotland]], to attend the [[2021 United Nations Climate Change Conference|United Nations COP26 Climate Change Conference]].<ref name="RAES 2021">{{cite web |last1=Robinson |first1=Tim |last2=Read |first2=Bill |title=Boeing charts a greener flight path |url=https://www.aerosociety.com/news/boeing-charts-a-greener-flight-path/ |website=RAeS |publisher=Royal Aeronautical Society |access-date=November 21, 2022 |date=October 26, 2021}}</ref> Other test areas included halon-free fire extinguisher (ground testing only), a low-profile [[anti-collision light]], and text-based [[air traffic control]] communications.<ref>{{cite web |last1=Norris |first1=Guy |title=Boeing ecoDemonstrator Assumes Growing Role |url=https://aviationweek.com/special-topics/sustainability/boeing-ecodemonstrator-assumes-growing-role |website=Aviation Week |publisher=Informa Markets |access-date=January 11, 2024 |date=October 19, 2021}}</ref> At the end of the testing the aircraft was returned to standard configuration, and was delivered to Alaska Airlines in 2022.

During October 2023 a 737 MAX 10 destined for United Airlines flew a series of test flights to compare the emissions of SAF, including the contrails, with those of conventional fuel. The emissions were measured by NASA's [[Douglas DC-8]] Airborne Science Lab which flew close behind the 737, which wore a special livery as part of a series of special tests named [[ecoDemonstrator Explorer]].<ref>{{cite web |title=NASA, Partners Explore Sustainable Fuel's Effects on Aircraft Contrails |url=https://www.nasa.gov/centers-and-facilities/armstrong/nasa-partners-explore-sustainable-fuels-effects-on-aircraft-contrails/ |website=NASA |access-date=November 17, 2023 |date=November 14, 2023}}</ref>