Editing Boeing 777 (section)

==Variants==
Boeing uses two characteristics – [[fuselage]] length and [[Range (aircraft)|range]] – to define its 777 models.<ref name=Eden112/><ref>{{cite news |url=https://aviationweek.com/blog/boeing-777-unveiling-design-classic-1990 |title=Boeing 777 - Unveiling A Design Classic (1990) |date=January 26, 2015 |author=Guy Norris |work=Aviation Week Network |access-date=November 25, 2019 |archive-date=October 18, 2018 |archive-url=https://web.archive.org/web/20181018002806/http://aviationweek.com/blog/boeing-777-unveiling-design-classic-1990 |url-status=live}}</ref> Passengers and cargo capacity varies by fuselage length: the 777-300 has a stretched fuselage compared to the base 777-200. Three range categories were defined: the A-market would cover domestic and regional operations, the B-market would cover routes from Europe to the US West coast and the C-market the longest transpacific routes.<ref>{{cite book |title=The Magic of a Name: The Rolls-Royce Story, Part 3: A Family of Engines |author=Peter Pugh |publisher=Icon Books Ltd |isbn=978-1-84831-998-1 |date=2002 |url=https://books.google.com/books?id=LtXGBwAAQBAJ&pg=PT205 |access-date=December 19, 2020 |archive-date=May 27, 2021 |archive-url=https://web.archive.org/web/20210527123611/https://books.google.com/books?id=LtXGBwAAQBAJ&lpg=PT205 |url-status=live}}</ref> The A-market would be covered by a {{cvt|7800|km|nmi|disp=output only}} (7,800&nbsp;km; {{cvt|7800|km|mi|disp=output only}}) range, {{cvt|234|t|lb|order=flip}} MTOW aircraft for 353 to 374 passengers powered by {{cvt|316|kN|lbf|order=flip}} engines, followed by a {{cvt|12200|km|nmi|disp=output only}} (12,200&nbsp;km; {{cvt|12200|km|mi|disp=output only}}) B-market range for 286 passengers in three-class, with {{cvt|365|kN|lbf|order=flip}} unit thrust and {{cvt|263|t|lb|order=flip}} of MTOW, an A340 competitor, basis of an A-market 409 to 434 passengers stretch, and eventually a {{cvt|14000|km|nmi|disp=output only}} (14,000&nbsp;km; {{cvt|14000|km|mi|disp=output only}}) C-market with {{cvt|400|kN|lbf|order=flip}} engines.<ref>{{cite magazine |url=https://www.flightglobal.com/pdfarchive/view/1990/1990%20-%202621.html |title=Mass market |author=David Learmount |date=September 5, 1990 |magazine=Flight International |access-date=October 29, 2017 |archive-date=October 29, 2017 |archive-url=https://web.archive.org/web/20171029174517/https://www.flightglobal.com/pdfarchive/view/1990/1990%20-%202621.html |url-status=live}}</ref>

When referring to different variants, the [[International Air Transport Association]] (IATA) code collapses the 777 model designator and the -200 or -300 variant designator to "772" or "773".<ref name=IATAcode>{{cite web |url=http://www.flugzeuginfo.net/table_accodes_iata_en.php |title=IATA Aircraft Codes |work=Flugzeuginfo |access-date=October 29, 2017 |archive-date=November 14, 2017 |archive-url=https://web.archive.org/web/20171114003144/http://www.flugzeuginfo.net/table_accodes_iata_en.php |url-status=live}}</ref> The [[International Civil Aviation Organization]] (ICAO) aircraft type designator system adds a preceding manufacturer letter, in this case "B" for Boeing, hence "B772" or "B773".<ref name=ICAOcode/> Designations may append a range identifier like "B77W" for the 777-300ER by the ICAO,<ref name=ICAOcode/> "77W" for the IATA,<ref name=IATAcode/> though the -200ER is a company marketing designation and not certificated as such. Other notations include "773ER"<ref>{{cite news |url=https://www.smh.com.au/news/business/air-nz-must-ask-shareholders/2007/09/11/1189276720074.html |title=Air NZ must ask shareholders |work=Sydney Morning Herald |access-date=March 30, 2009 |last=John |first=Danny |date=September 12, 2007 |archive-date=April 13, 2009 |archive-url=https://web.archive.org/web/20090413194346/http://www.smh.com.au/news/business/air-nz-must-ask-shareholders/2007/09/11/1189276720074.html |url-status=live}}</ref> and "773B" for the -300ER.<ref>{{cite web |url=http://www.atimes.com/atimes/China_Business/GL03Cb06.html |archive-url=https://web.archive.org/web/20060316200115/http://www.atimes.com/atimes/China_Business/GL03Cb06.html |url-status=unfit |archive-date=March 16, 2006 |title=Cathay Pacific puts its trust in Boeing |publisher=[[Asia Times Online]] |access-date=March 30, 2009 |date=December 3, 2005}}</ref>

===777-200===
[[File:N774UA B777-222 United Al LHR 01JUN02 (8187152724).jpg|thumb|N774UA pictured in 2002, the second Boeing 777-200 produced]]

The initial 777-200 made its maiden flight on June 12, 1994, and was first delivered to United Airlines on May 15, 1995.<ref name="Boe_777_back"/> With a 545,000&nbsp;lb (247&nbsp;t) MTOW and {{cvt|77,000|lbf|kN}} engines, it has a range of {{convert|5240|nmi}} with 305 passenger seats in a three-class configuration.<ref name=777_perf/> The -200 was primarily aimed at US [[Domestic airport|domestic airline]]s,<ref name=Eden112/> although several Asian carriers and British Airways have also operated the type.  Nine<!-- JAL Domestic and International are counted as one --> different -200 customers have taken delivery of 88 aircraft,<ref name=777_O_D_summ/> with 55 in airline service {{as of|2018|lc=y}}.<ref name="FlightCensus">{{Cite web |date=August 21, 2018 |title=World Airline Census 2018 |url=https://www.flightglobal.com/asset/24536 |url-status=live |archive-url=https://web.archive.org/web/20181106212640/https://www.flightglobal.com/asset/24536 |archive-date=November 6, 2018 |access-date=August 21, 2018 |work=Flightglobal |language=en-GB}}</ref> The competing Airbus aircraft was the [[Airbus A330-300|A330-300]].<ref name="Wallace">{{cite web |url=http://www.highbeam.com/doc/1G1-80189598.html |title=Aerospace Notebook: Conner's best bet – Let it ride on the 777s but airlines aren't ready to commit to 200LR model |last=Wallace |first=James |date=November 19, 2001 |work=Seattle Post-Intelligencer |access-date=May 8, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20121105222803/http://www.highbeam.com/doc/1G1-80189598.html |archive-date=November 5, 2012}}</ref>

In March 2016, [[United Airlines]] shifted operations with all 19 of its -200s to exclusively domestic US routes, including flights to and from Hawaii, and added more economy class seats by shifting to a ten-abreast configuration (a pattern that matched American Airlines' reconfiguration of the type).<ref>{{cite web |url=https://www.usatoday.com/story/travel/flights/todayinthesky/2016/03/09/united-confirms-10-abreast-seating-some-its-777s/81519220/ |title=United confirms 10-abreast seating on some of its 777s |last=Mutzabaugh |first=Ben |date=March 9, 2016 |access-date=June 28, 2019 |work=USA Today |archive-date=June 28, 2019 |archive-url=https://web.archive.org/web/20190628171937/https://www.usatoday.com/story/travel/flights/todayinthesky/2016/03/09/united-confirms-10-abreast-seating-some-its-777s/81519220/ |url-status=live}}</ref><ref>{{cite web |url=https://www.latimes.com/business/la-fi-travel-briefcase-united-boeing-20171021-story.html |title=United Airlines becomes latest carrier to put economy passengers in rows of 10 seats |last=Martin |first=Hugo |date=October 21, 2017 |access-date=June 28, 2019 |work=Los Angeles Times |archive-date=June 28, 2019 |archive-url=https://web.archive.org/web/20190628171937/https://www.latimes.com/business/la-fi-travel-briefcase-united-boeing-20171021-story.html |url-status=live}}</ref> {{as of|2019}}, Boeing no longer markets the -200, as indicated by its removal from the manufacturer's price listings for 777 variants.<ref name=prices/>

====777-200ER====
[[File:G-VIIN Boeing 772 British Airways (13894471233).jpg|thumb|The 777-200ER entered service in February 1997 with launch operator [[British Airways]].|alt=Aircraft landing approach. Side view of a twin-engine jet in flight with flaps and landing gear extended.]]

The B-market 777-200ER ("ER" for Extended Range), originally known as the 777-200IGW (increased gross weight), has additional fuel capacity and an increased MTOW enabling transoceanic routes.<ref name="eden112-113">{{Harvnb|Eden|2008|pp=112–113}}</ref> With a 658,000&nbsp;lb (298 t) MTOW and {{cvt|93,700|lbf|kN}} engines, it has a {{cvt|7065|nmi}} range with 301 passenger seats in a three-class configuration.<ref name="Characteristics"/> It was delivered first to British Airways on February 6, 1997.<ref name="Boe_777_back"/> Thirty-three customers received 422 deliveries, with no unfilled orders {{as of|2019|lc=y}}.<ref name=777_O_D_summ/>

{{as of|2018}}, 338 examples of the -200ER are in airline service.<ref name=FlightCensus/><!-- Updates require a reference. --> It competed with the [[Airbus A340#A340-300|A340-300]].<ref>{{cite magazine |author=Robert Wall |url=http://aviationweek.com/awin/boeings-interest-focuses-747-advanced-not-787-10 |title=Boeing talks up 747 Advanced, talks down Airbus A350 |magazine=Aviation Week & Space Technology |date=October 31, 2005 |page=40 |url-access=subscription |access-date=November 13, 2018 |archive-date=November 13, 2018 |archive-url=https://web.archive.org/web/20181113165850/http://archive.aviationweek.com/issue/20051031 |url-status=live}}</ref> Boeing proposed the [[Boeing 787 Dreamliner#787-10|787-10]] to replace it.<ref>{{cite news |url=http://www.seattlepi.com/business/article/Everett-work-force-for-787-pegged-at-1-000-1190602.php |title=Everett work force for 787 pegged at 1,000 |date=December 21, 2005 |work=[[Seattle Post-Intelligencer]] |author=James Wallace |access-date=October 29, 2017 |archive-date=August 22, 2018 |archive-url=https://web.archive.org/web/20180822015056/https://www.seattlepi.com/business/article/Everett-work-force-for-787-pegged-at-1-000-1190602.php |url-status=live}}</ref> The value of a new -200ER rose from US$110&nbsp;million at service entry to US$130&nbsp;million in 2007; a 2007 model 777 was selling for US$30&nbsp;million ten years later, while the oldest ones had a value around US$5–6&nbsp;million, depending on the remaining engine time.<ref>{{Cite news |url=http://www.aircraftvaluenews.com/the-last-decade-has-not-favored-b777-200er-values/ |title=The Last Decade Has Not Favored B777-200ER Values |author=Aircraft Value News |date=November 12, 2018 |access-date=November 13, 2018 |archive-date=November 13, 2018 |archive-url=https://web.archive.org/web/20181113165648/http://www.aircraftvaluenews.com/the-last-decade-has-not-favored-b777-200er-values/ |url-status=live}}</ref>

The engine can be delivered de-rated with reduced engine thrust for shorter routes to lower the MTOW, reduce purchase price and [[landing fee]]s (as 777-200 specifications) but can be re-rated to full standard.<ref name=SQ/> [[Singapore Airlines]] ordered over half of its -200ERs de-rated.<ref name=SQ>{{cite web |url=http://www.centreforaviation.com/analysis/sia-new-long-haul-low-cost-carrier-to-start-with-400-seat-b777s-plans-16-aircraft-fleet-within-five-58111 |title=SIA's new long-haul LCC to start with 400-seat B777s, plans 16-aircraft fleet within four years |publisher=CAPA Centre for Aviation |date=September 1, 2011 |access-date=March 22, 2012 |archive-date=March 17, 2012 |archive-url=https://web.archive.org/web/20120317182807/http://www.centreforaviation.com/analysis/sia-new-long-haul-low-cost-carrier-to-start-with-400-seat-b777s-plans-16-aircraft-fleet-within-five-58111 |url-status=live}}</ref><ref>{{cite web |url=http://www.singaporeair.com/en_UK/flying-with-us/ouraircraft/ |title=Our Fleet |work=Singapore Airlines |year=2012 |access-date=March 22, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120324055551/http://www.singaporeair.com/en_UK/flying-with-us/ouraircraft/ |archive-date=March 24, 2012}}</ref>

====777-200LR Worldliner<span class="anchor" id="777-200LR Worldliner"></span>====<!-- This section is linked from [[KLM]] -->
[[File:AP-BGY KJFK (37725309116).jpg|thumb|A Boeing 777-200LR in the livery of its first operator, [[Pakistan International Airlines]]|alt=Aircraft landing approach. Side view of twin-engine jet in flight with flaps and landing gear extended.]]

The 777-200LR Worldliner ("LR" for Long Range), the C-market model, entered service in 2006 as one of the longest-range commercial airliners.<ref name=Flug772/><ref>{{cite web |last=Field |first=David |url=https://www.flightglobal.com/news/articles/delta-pushes-boeing-to-squeeze-more-range-from-777-2-222225/ |title=Delta pushes Boeing to squeeze more range from 777-200LR |date=March 17, 2008 |work=Flight International |access-date=December 2, 2008 |url-status=live |archive-url=https://web.archive.org/web/20080320012523/http://www.flightglobal.com/articles/2008/03/17/222225/delta-pushes-boeing-to-squeeze-more-range-from-777-200lr.html |archive-date=March 20, 2008}}</ref> Boeing named it ''Worldliner'' as it can connect almost any two airports in the world,<ref name=NYT_772LR_record>{{cite news |url=https://www.nytimes.com/2005/11/10/business/11air.html |title=Flight of Boeing's 777 Breaks Distance Record |author=Phillips, Don |agency=International Herald Tribune |date=November 10, 2005 |newspaper=The New York Times |access-date=October 14, 2013 |url-status=live |archive-url=https://web.archive.org/web/20150203152936/http://www.nytimes.com/2005/11/10/business/11air.html |archive-date=February 3, 2015}}</ref> although it is still subject to ETOPS restrictions.<ref>{{cite web |url=http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/6f3c0a764bd5cd0d86257482006e966a/$FILE/T00001SE.pdf |title=FAA Type Certificate Data Sheet T00001SE |work=[[Federal Aviation Administration]] |access-date=November 5, 2009 |archive-url=https://web.archive.org/web/20160204170653/http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/6f3c0a764bd5cd0d86257482006e966a/$FILE/T00001SE.pdf |archive-date=February 4, 2016 |url-status=dead}}</ref> It holds the world record for the longest nonstop flight by a commercial airliner.<ref name="NYT_772LR_record"/> It has a maximum design range of {{convert|8555|nmi}} {{as of|2017|lc=y}}.<ref name="Characteristics" /> The -200LR was intended for [[ultra long-haul]] routes such as [[Los Angeles]] to [[Singapore]].<ref name="Norris and Wagner p. 165"/>

Developed alongside the -300ER, the -200LR features an increased MTOW and three optional auxiliary fuel tanks in the rear cargo hold.<ref name=Flug772>{{cite web |url=http://www.flug-revue.rotor.com/FRtypen/FR77720l.htm |title=Datafile: Boeing 777-200LR Worldiner |work=Flug Revue |year=2006 |access-date=March 20, 2009 |archive-url=https://web.archive.org/web/20080517015012/http://www.flug-revue.rotor.com/FRtypen/FR77720L.htm |archive-date=May 17, 2008}}</ref> Other new features include extended raked wingtips, redesigned main landing gear, and additional structural strengthening.<ref name=Flug772/> As with the -300ER and 777F, the -200LR is equipped with wingtip extensions of 12.8&nbsp;ft (3.90&nbsp;m).<ref name=Flug772/> The -200LR is powered by GE90-110B1 or GE90-115B turbofans.<ref name=Boeing_777_airport_report_gen1/> The first -200LR was delivered to [[Pakistan International Airlines]] on February 26, 2006.<ref name=pia777/><ref>{{cite web |url=http://active.boeing.com/commercial/orders/index.cfm?content=modelselection.cfm&pageid=m15525 |title=Deliveries |work=Boeing |access-date=September 8, 2009 |archive-date=December 17, 2013 |archive-url=https://web.archive.org/web/20131217122256/http://active.boeing.com/commercial/orders/index.cfm?content=modelselection.cfm&pageid=m15525 |url-status=live}}</ref> Twelve different -200LR customers took delivery of 61 aircraft.<ref>{{Cite web |date=Dec 12, 2021 |title=Boeing: Commercial Orders & Deliveries: Dec 2021 |url=https://www.boeing.com/commercial/#/orders-deliveries |url-status=live |access-date=2021-12-05 |website=www.boeing.com |archive-url=https://web.archive.org/web/19991002201937/http://www.boeing.com/commercial/#/orders-deliveries |archive-date=October 2, 1999}}</ref> Airlines operated 50 of the -200LR variant {{as of|2018|lc=on}}.<ref name=FlightCensus/> Emirates is the largest operator of the LR variant with 10 aircraft.<ref name="FI17">{{cite journal |last1=Thisdell |first1=Dan |last2=Morris |first2=Rob |date=July 31, 2017 |title=World Airliner Census 2017 |department=Flightglobal Insight |journal=Flight International |publisher=Flightglobal |publication-date=August 12, 2017}}</ref> The closest competing aircraft from Airbus are the discontinued [[Airbus A340|A340-500HGW]]<ref name=Flug772/> and the current [[Airbus A350#A350-900ULR|A350-900ULR]].<ref>{{cite web |url=https://leehamnews.com/2015/10/16/bjorns-corner-increasing-an-aircrafts-range/ |title=Bjorn's Corner: Increasing an aircraft's range - Leeham News and Comment |date=October 16, 2015 |access-date=August 25, 2017 |archive-date=August 9, 2018 |archive-url=https://web.archive.org/web/20180809121025/https://leehamnews.com/2015/10/16/bjorns-corner-increasing-an-aircrafts-range/ |url-status=live}}</ref>

===777 Freighter===
[[File:N866FD@PEK (20200420152652).jpg|thumb|A 777F of [[FedEx Express]], the largest operator of the type]]

The 777 Freighter (777F) is an all-cargo version of the twinjet, and shares features with the -200LR; these include its airframe, engines,<ref name=cargokings>{{cite web |last=Norris |first=Guy |url=https://www.flightglobal.com/news/articles/cargo-kings-new-boeing-777f-and-747-8f-programmes-206571/ |title=Cargo Kings: new Boeing 777F and 747-8F programmes |work=Flight International |date=May 16, 2006 |access-date=October 27, 2016 |archive-date=October 27, 2016 |archive-url=https://web.archive.org/web/20161027192300/https://www.flightglobal.com/news/articles/cargo-kings-new-boeing-777f-and-747-8f-programmes-206571/ |url-status=live}}</ref> and fuel capacity.<ref name=Boeing_777_airport_report_gen2/> The 777F is unofficially referred to as 777-200LRF by some cargo airlines.<ref name="AAWw-1">{{Cite web |title=777-200LRF |url=https://www.atlasairworldwide.com/boeing-fleet/777-200lrf/ |access-date=December 3, 2024 |website=[[Atlas Air Worldwide]]}}</ref> With a maximum payload of {{cvt|228700|lb|kg}} (similar to the {{cvt|243000|lb|kg}} of the Boeing 747-200F), it has a maximum range of 9,750&nbsp;nmi (18,057&nbsp;km; {{cvt|9,750|nmi|mi|disp=output only}})) or 4,970&nbsp;nmi (9,200&nbsp;km; {{cvt|4,970|nmi|mi|disp=output only}})) at its max structural payload.<ref name=boeplanechars>{{cite web |url=https://www.boeing.com/assets/pdf/commercial/airports/acaps/777_2lr3er.pdf |title=777-200LR/-300ER/-Freighter Airplane Characteristics for Airport Planning |publisher=Boeing |date=May 2015 |access-date=March 31, 2021 |archive-date=February 24, 2021 |archive-url=https://web.archive.org/web/20210224200839/http://www.boeing.com/assets/pdf/commercial/airports/acaps/777_2lr3er.pdf |url-status=live}}</ref><ref>{{Cite web |title=freighters |url=https://www.boeing.com/commercial/freighters#777%20Freighter |access-date=2024-09-02 |website=www.boeing.com |language=en-US}}</ref><ref name="AAWw-1" />

The 777F also features a new supernumerary area, which includes four business-class seats forward of the rigid cargo barrier, full main deck access, bunks, and a galley.<ref>{{cite web |url=https://www.boeing.com/commercial/aeromagazine/articles/qtr_02_09/article_02_1.html |title=777 Freighter: Efficiency for Long-Haul Operators |publisher=Boeing |work=Aero Magazine |author=Jason S. Clark and Kenneth D. Kirwan |date=May 2015 |access-date=March 31, 2021 |archive-date=March 1, 2021 |archive-url=https://web.archive.org/web/20210301042948/https://www.boeing.com/commercial/aeromagazine/articles/qtr_02_09/article_02_1.html |url-status=live}}</ref> As the aircraft promises improved operating economics compared to older freighters,<ref name=fuelsaver/> airlines have viewed the 777F as a replacement for freighters such as the Boeing 747-200F, McDonnell Douglas DC-10, and McDonnell Douglas MD-11F.<ref name=Flug777F>{{cite web |url=http://www.flug-revue.rotor.com/FRtypen/FR777F.htm |title=Datafile: Boeing 777F |work=Flug Revue |year=2006 |access-date=March 20, 2009 |archive-url=https://web.archive.org/web/20080130004241/http://www.flug-revue.rotor.com/FRtypen/FR777F.htm |archive-date=January 30, 2008}}</ref><ref>{{cite news |url=https://www.usatoday.com/money/industries/manufacturing/2005-03-25-boeing-air-france_x.htm |title=Air France to buy Boeing 777 freighters |date=March 25, 2005 |agency=Associated Press |work=USA Today |access-date=October 19, 2010 |archive-date=August 4, 2011 |archive-url=https://web.archive.org/web/20110804225956/http://www.usatoday.com/money/industries/manufacturing/2005-03-25-boeing-air-france_x.htm |url-status=live}}</ref>

The first 777F was delivered to Air France on February 19, 2009.<ref name=af777f/> {{as of|2021|April|df=}}, 247 freighters have been ordered by 25 different customers with 45 unfilled orders.<ref name=777_O_D_summ/> Operators had 202 of the 777F in service {{as of|2018|lc=y}}.<ref name=FlightCensus/><!-- Updates require a newer reference. -->

===777-300===
[[File:B-HNF@HKG (20190716164500).jpg|alt=Aircraft takeoff. Side view of aircraft ascending, with landing gear doors open.|thumb|A 777-300 of [[Cathay Pacific]], its launch operator]]

Launched at the [[Paris Air Show]] on June 26, 1995, its major assembly started in March 1997 and its body was joined on July 21, it was rolled-out on September 8 and made its first flight on October 16.<ref name=Flight3dec1997/> The 777-300 was designed to be stretched by 20%: 60 extra seats to 368 in a three-class configuration, 75 more to 451 in two classes, or up to 550 in all-economy like the 747SR. The {{cvt|10.1|m|ft|order=flip}} stretch is done with {{cvt|5.3|m|ft|order=flip}} in ten frames forward and {{cvt|4.8|m|ft|order=flip}} in nine frames aft for a {{cvt|73.8|m|ft|order=flip}} length, {{cvt|3.4|m|ft|order=flip}} longer than the 747-400. It uses the -200ER {{cvt|171,200|litre|USgal|order=flip}} fuel capacity and {{cvt|374|-|436|kN|lbf|order=flip}} engines with a {{cvt|263.3|to|299.6|t|lb|order=flip}} MTOW.<ref name=Flight3dec1997/>

It has ground maneuvering cameras for [[taxiing]] and a [[tailstrike|tailskid]] to rotate, while the proposed {{cvt|324.6|t|lb|order=flip}} MTOW -300X would have needed a semi-levered main gear. Its overwing fuselage section 44 was strengthened, with its skin thickness going from the -200's {{cvt|6.3|to|11.4|mm|in|order=flip}}, and received a new evacuation door pair. Its [[operating empty weight]] with Rolls-Royce engines in typical tri-class layout is {{cvt|155.72|t|lb|order=flip}} compared to {{cvt|139.38|t|lb|order=flip}} for a similarly configured -200.<ref name=Flight3dec1997/> Boeing wanted to deliver 170 -300s by 2006 and to produce 28 per year by 2002, to replace early Boeing 747s, burning one-third less fuel with 40% lower maintenance costs.<ref name=Flight3dec1997>{{cite magazine |magazine=Flight International |url=https://www.flightglobal.com/pdfarchive/view/1997/1997%20-%203324.html |title=Boeing's long stretch |author=Guy Norris |date=December 3, 1997 |access-date=October 29, 2017 |archive-date=December 1, 2017 |archive-url=https://web.archive.org/web/20171201041100/https://www.flightglobal.com/pdfarchive/view/1997/1997%20-%203324.html |url-status=live}}</ref>

With a 660,000&nbsp;lb (299&nbsp;t) MTOW and {{cvt|90,000|lbf|kN}} engines, it has a range of {{convert|6005|nmi}} with 368 passengers in three-class.<ref name=777_perf/> Eight different customers have taken delivery of 60 aircraft of the variant, of which 18 were powered by the PW4000 and 42 by the RR Trent 800 (none were ordered with the GE90, which was never certified on this variant<ref name="TypeCert">{{cite web |url=http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/8bff0e63469dd8eb862580190055ffa6/$FILE/T00001SE_Rev40.pdf |title=Type Certificate data sheet No. T00001SE |date=August 12, 2016 |publisher=FAA |access-date=October 23, 2016 |archive-date=November 13, 2016 |archive-url=https://web.archive.org/web/20161113003304/http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/8bff0e63469dd8eb862580190055ffa6/$FILE/T00001SE_Rev40.pdf |url-status=live}}</ref>),<ref name=777_O_D_summ/> with 48 in airline service {{as of|2018|lc=y}}.<ref name=FlightCensus/> The last -300 was delivered in 2006 while the longer-range -300ER started deliveries in 2004.<ref name=777_O_D_summ/>

====777-300ER====<!-- This section is linked from [[KLM]] -->
[[File:F-GSQV@PEK (20191014145913).jpg|thumb|A 777-300ER, the best-selling variant, of the launch operator [[Air France]]]]

The 777-300ER ("ER" for Extended Range) is the B-market version of the -300. Its higher MTOW and increased fuel capacity permits a maximum range of {{convert|7,370|nmi}} with 392 passengers in a two-class seating arrangement.<ref name="Characteristics" /> The 777-300ER features extended raked wingtips, a strengthened fuselage and wings and a modified main landing gear.<ref name="77Wspecs">{{cite web |author=Guy Norris |url=https://www.flightglobal.com/news/articles/long-ranger-160884/ |title=Long Ranger |work=Flight International |date=January 28, 2003 |access-date=February 25, 2016 |archive-date=October 5, 2016 |archive-url=https://web.archive.org/web/20161005091041/https://www.flightglobal.com/news/articles/long-ranger-160884/ |url-status=live}}</ref> Its wings have an [[Aspect ratio (aerodynamics)|aspect ratio]] of 9.0.<ref name="leeUp">{{cite web |author=Scott Hamilton |url=http://leehamnews.com/2014/02/03/updating-the-a380-the-prospect-of-a-neo-version-and-whats-involved/ |title=Updating the A380: the prospect of a neo version and what's involved |publisher=Leeham news |date=February 3, 2014 |access-date=June 21, 2014 |archive-date=April 8, 2014 |archive-url=https://web.archive.org/web/20140408075935/http://leehamnews.com/2014/02/03/updating-the-a380-the-prospect-of-a-neo-version-and-whats-involved/ |url-status=live}}</ref> It is powered by the [[General Electric GE90#Variants|GE90-115B]] turbofan, the world's most powerful jet engine with a maximum thrust of {{cvt|115300|lbf|kN}}.<ref name="GE90-115Bpower">{{cite web |url=http://www.popularmechanics.com/technology/engineering/1280866 |title=Biggest Jet Engine |date=July 2004 |work=[[Popular Mechanics]] |author=Paul Eisenstein |access-date=June 3, 2011 |archive-date=December 24, 2014 |archive-url=https://web.archive.org/web/20141224214613/http://www.popularmechanics.com/technology/engineering/1280866 |url-status=live}}</ref>

Following flight testing, aerodynamic refinements have reduced fuel burn by an additional 1.4%.<ref name="green">{{cite web |author=Jon Ostrower |url=https://www.flightglobal.com/news/articles/green-and-versatile-225112/ |title=Green and versatile |work=Flight International |date=August 7, 2008 |access-date=February 25, 2016 |archive-date=March 7, 2016 |archive-url=https://web.archive.org/web/20160307085733/https://www.flightglobal.com/news/articles/green-and-versatile-225112/ |url-status=live}}</ref><ref name="77Wenhancement">{{cite news |author=Geoffrey Thomas |url=http://www.theaustralian.news.com.au/common/story_page/0,5744,17428629%255E23349,00.html |archive-url=https://web.archive.org/web/20051204032319/http://www.theaustralian.news.com.au/common/story_page/0%2C5744%2C17428629%5E23349%2C00.html |url-status=dead |archive-date=December 4, 2005 |title=Boeing nose ahead in Qantas order race |newspaper=The Australian |date=December 2, 2005}}</ref> At {{cvt|0.839|Mach|altitude_ft=30000|knots km/h|0}}, FL300, -59&nbsp;°C and at a {{cvt|513,400|lb|t}} weight, it burns {{cvt|17,300|lb|t}} of fuel per hour. Its operating empty weight is {{cvt|371,600|lb|t}}.<ref>{{cite news |url=http://archive.aviationweek.com/issue/20040405#!&pid=62 |title=In the Stretch - Flying the 777-300ER |author=David M. North |date=April 5, 2004 |work=Aviation week |url-access=subscription |access-date=July 25, 2018 |archive-date=July 25, 2018 |archive-url=https://web.archive.org/web/20180725153349/http://archive.aviationweek.com/issue/20040405#!&pid=62 |url-status=live}}</ref> The projected operational empty weight is {{cvt|168,560|kg|order=flip}} in airline configuration, at a weight of {{cvt|216,370|kg|lb|order=flip}} and FL350, total [[fuel economy in aircraft|fuel flow]] is {{cvt|6790|kg/h|lb/h|order=flip}} at {{cvt|0.84|Mach|altitude_ft=30000|knots km/h|0}}, rising to {{cvt|8,890|kg/h|lb/h|order=flip|-1}} at {{cvt|0.87|Mach|altitude_ft=30000|knots km/h|0}}.<ref>{{cite news |url=https://www.flightglobal.com/news/articles/flight-test-boeing-777-300er-fast-and-heavy-176585/ |title=Flight Test: Boeing 777-300ER - Fast and heavy |date=January 20, 2004 |work=FlightGlobal |access-date=October 23, 2016 |archive-date=October 24, 2016 |archive-url=https://web.archive.org/web/20161024023709/https://www.flightglobal.com/news/articles/flight-test-boeing-777-300er-fast-and-heavy-176585/ |url-status=live}}</ref>

Since its launch, the -300ER has been a primary driver of the airplane's sales past the rival A330/340 series.<ref>{{cite web |url=http://centreforaviation.com/analysis/777-300er-fleet-report-orders-have-peaked-but-swiss-united-and-kuwait-new-operators-in-2016-268001 |title=777-300ER fleet report: orders have peaked but Swiss, United and Kuwait new operators in 2016 |work=CAPA - Centre for Aviation |date=February 25, 2016 |access-date=February 25, 2016 |archive-date=August 27, 2016 |archive-url=https://web.archive.org/web/20160827175621/https://centreforaviation.com/analysis/777-300er-fleet-report-orders-have-peaked-but-swiss-united-and-kuwait-new-operators-in-2016-268001 |url-status=live}}</ref> Its direct competitors have included the Airbus A340-600 and the [[Airbus A350-1000|A350-1000]].<ref name=777pressure>{{cite web |url=https://www.flightglobal.com/news/articles/airbus-a350-xwb-puts-pressure-on-boeing-777-219901/ |title=Airbus A350 XWB puts pressure on Boeing 777 |publisher=FlightGlobal |date=November 26, 2007 |access-date=February 25, 2016 |archive-date=March 8, 2016 |archive-url=https://web.archive.org/web/20160308174257/https://www.flightglobal.com/news/articles/airbus-a350-xwb-puts-pressure-on-boeing-777-219901/ |url-status=live}}</ref> Using two engines produces a typical operating cost advantage of around 8–9% for the -300ER over the A340-600.<ref name="exclusive-a340e">{{cite web |author=Ben Kingsley-Jones |author2=Guy Norris |url=https://www.flightglobal.com/news/articles/exclusive-enhanced-a340-to-take-on-777-203391/ |title=Enhanced A340 to take on 777 |work=Flight International |date=November 29, 2005 |access-date=February 25, 2016 |archive-date=March 7, 2016 |archive-url=https://web.archive.org/web/20160307102539/https://www.flightglobal.com/news/articles/exclusive-enhanced-a340-to-take-on-777-203391/ |url-status=live}}</ref> Several airlines have acquired the -300ER as a 747-400 replacement amid rising fuel prices given its 20% fuel burn advantage.<ref name=fuelsaver/> The -300ER has an operating cost of $44 per seat hour, compared to an [[Airbus A380]]'s roughly $50 per seat hour and $90 per seat hour for a Boeing 747-400 {{as of|2015|lc=y}}.<ref>{{cite news |url=http://airinsight.com/2015/11/20/the-a380s-future/ |title=The A380's future |date=November 20, 2015 |newspaper=AirInsight |access-date=April 22, 2016 |archive-date=April 13, 2016 |archive-url=https://web.archive.org/web/20160413052841/http://airinsight.com/2015/11/20/the-a380s-future/ |url-status=live}}</ref>

The first 777-300ER was delivered to Air France on April 29, 2004.<ref>{{Cite press release |url=https://www.geaviation.com/press-release/ge90-engine-family/ge90-115b-ges-best-ever-new-jet-engine-entry-airline-service |title=GE90-115B: GE's Best-Ever New Jet Engine Entry Into Airline Service |publisher=GE Aviation |date=July 17, 2006 |access-date=December 26, 2019 |archive-date=December 26, 2019 |archive-url=https://web.archive.org/web/20191226203642/https://www.geaviation.com/press-release/ge90-engine-family/ge90-115b-ges-best-ever-new-jet-engine-entry-airline-service |url-status=live}}</ref><ref>{{cite web |url=http://corporate.airfrance.com/uploads/media/new_boeing_777-300ER_joins_airfrance_fleet_02.pdf |title=New Boeing 777-300ER Joins Air France Fleet |publisher=Air France |date=May 13, 2004 |access-date=August 25, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20120917104714/http://corporate.airfrance.com/uploads/media/new_boeing_777-300ER_joins_airfrance_fleet_02.pdf |archive-date=September 17, 2012}}</ref> The -300ER is the best-selling 777 variant, with Emirates being the largest operator with 123 777-300ER in service, having surpassed the -200ER in orders in 2010 and deliveries in 2013.<ref name=777_O_D_summ/> {{as of|2018}}, 784 300ERs were in service,<ref name=FlightCensus/> A total of 831 were built with the last delivered to [[Aeroflot]] in 2021.<ref>That's your flot ''[[Airliner World]]'' December 2021 p. 16</ref> Boeing ended 777-300ER production in 2024, and switched to the new 777X.<ref>[https://aviationa2z.com/index.php/2025/01/22/boeing-ends-production-of-777-300er-aircraft/ "Boeing Ends Production of its Best Seller Widebody Aircraft"]. ''Aviation A2Z.'' January 22, 2025.</ref><ref>[https://www.businesstraveller.com/features/the-end-of-an-era-boeing-stops-777-300er-production/ "The end of an era: Boeing stops 777-300ER production"]. ''Business Traveller'', January 23, 2025.</ref>

===777X===
{{main|Boeing 777X}}
[[File:777X Roll-Out (40407373023) (cropped).jpg|alt=Twin-engine aircraft in hangar|thumb|Unveiling of the first 777X variant, the 777-9, on March 13, 2019]]

The third-generation of the 777, launched as the 777X, is to feature new GE9X engines and new composite wings with folding wingtips.<ref name=777Xlaunch/> It was launched in November 2013 with two variants: the 777-8 and the 777-9.<ref name=777Xlaunch>{{cite press release |title=Boeing Launches 777X with Record-Breaking Orders and Commitments |url=http://boeing.mediaroom.com/2013-11-17-Boeing-Launches-777X-with-Record-Breaking-Orders-and-Commitments |publisher=Boeing |date=November 17, 2013 |access-date=December 23, 2013 |archive-date=February 13, 2014 |archive-url=https://web.archive.org/web/20140213081058/http://boeing.mediaroom.com/2013-11-17-Boeing-Launches-777X-with-Record-Breaking-Orders-and-Commitments |url-status=live}}</ref> The 777-8 provides seating for 395 passengers and has a range of {{convert|8745|nmi|0|abbr=on}}, while the 777-9 has seating for 426 passengers and a range of over {{convert|7285|nmi|0|abbr=on}}.<ref name=Boeing25jan2020>{{cite press release |url=https://investors.boeing.com/investors/investor-news/press-release-details/2020/New-Boeing-777X-Completes-Successful-First-Flight/default.aspx |title=New Boeing 777X Completes Successful First Flight |date=January 25, 2020 |publisher=Boeing |access-date=January 27, 2020 |archive-date=January 26, 2020 |archive-url=https://web.archive.org/web/20200126091019/https://investors.boeing.com/investors/investor-news/press-release-details/2020/New-Boeing-777X-Completes-Successful-First-Flight/default.aspx |url-status=live}}</ref> A longer 777-10X, 777X Freighter, and 777X BBJ variants have also been proposed.<ref>{{cite news |last1=Hemmerdinger |first1=Jon |title=Qatar offers to be launch customer for a 777X freighter |url=https://www.flightglobal.com/paris-air-show-2019/qatar-offers-to-be-launch-customer-for-a-777x-freighter/133259.article |access-date=9 December 2020 |agency=Flight Global |archive-date=December 18, 2020 |archive-url=https://web.archive.org/web/20201218091911/https://www.flightglobal.com/paris-air-show-2019/qatar-offers-to-be-launch-customer-for-a-777x-freighter/133259.article |url-status=live}}</ref><!--
Please add 777-8 and 777-9 specific details to the Boeing 777X article -->

===Government and corporate===
[[File:Boeing 777-2AN-ER, United Arab Emirates (Abu Dhabi Amiri Flight) AN1567289.jpg|thumb|A [[Presidential Flight (UAE)|Presidential Flight of United Arab Emirates]] government 777-200ER.|alt=Aircraft landing approach. Side view of a twin-engine jet in flight with flaps and landing gear extended.]]
[[File:JASDF B777-300ER 80-1111 (4).jpg|thumb|A [[Japan Air Self-Defense Force]] 777-300ER operating as [[Japanese Air Force One]]|alt=Aircraft takeoff. Side view of a twin-engine jet at takeoff with flaps and landing gear extended.]]

Versions of the 777 have been acquired by government and private customers. The main purpose has been for VIP transport, including as an [[Air transports of heads of state and government|air transport for heads of state]], although the aircraft has also been proposed for other military applications.
* '''777 Business Jet (777 VIP)''' – the [[Boeing Business Jet]] version of the 777 that is sold to corporate customers. Boeing has received orders for 777 VIP aircraft based on the 777-200LR and 777-300ER passenger models.<ref name="77LBBJ">{{cite web |url=http://boeing.mediaroom.com/index.php?s=20295&item=1512 |title=Boeing Business Jets Delivers 777-200LR to Aviation Link Company |date=November 10, 2010 |work=Boeing |access-date=August 14, 2014 |archive-date=August 14, 2014 |archive-url=https://web.archive.org/web/20140814132343/http://boeing.mediaroom.com/index.php?s=20295&item=1512 |url-status=live}}</ref><ref name=77WBBJ>{{cite web |url=http://www.flightglobal.com/news/articles/boeing-receives-order-for-777-300er-bbj-400275/ |title=Boeing receives order for 777-300ER BBJ |first=Greg |last=Waldron |work=Flight International |date=June 11, 2014 |access-date=August 14, 2014 |archive-date=August 14, 2014 |archive-url=https://web.archive.org/web/20140814144050/http://www.flightglobal.com/news/articles/boeing-receives-order-for-777-300er-bbj-400275/ |url-status=live}}</ref> The aircraft are fitted with private jet cabins by third party contractors,<ref name=77LBBJ/> and completion may take three years.<ref>{{citation |first=Kate |last=Sarsfield |url=http://www.flightglobal.com/news/articles/jet-aviation-secures-completion-contract-for-two-bbj-410105/ |title=Jet Aviation secures completion contract for two BBJ 777-300ERs |work=[[FlightGlobal]] |publisher=Reed Business Information |date=March 13, 2015 |access-date=March 14, 2015 |archive-date=March 15, 2015 |archive-url=https://web.archive.org/web/20150315052631/http://www.flightglobal.com/news/articles/jet-aviation-secures-completion-contract-for-two-bbj-410105/ |url-status=live}}</ref>
* '''KC-777''' – this was a proposed [[aerial refueling|tanker]] version of the 777. In September 2006, Boeing announced that it would produce the KC-777 if the [[United States Air Force]] (USAF) required a larger tanker than the [[Boeing KC-767|KC-767]], able to transport more cargo or personnel.<ref>{{cite web |url=https://www.chicagotribune.com/2006/09/27/boeing-adds-777-to-tanker-mix/ |title=Boeing adds 777 to tanker mix |last=Sachdev |first=Ameet |date=September 27, 2006 |work=Chicago Tribune |access-date=May 8, 2011 |archive-date=January 8, 2012 |archive-url=https://web.archive.org/web/20120108201032/http://articles.chicagotribune.com/2006-09-27/business/0609270250_1_northrop-eads-tanker-contract-president-of-tanker-programs |url-status=live}}</ref><ref>{{cite web |last=Norris |first=Guy |url=http://www.flightglobal.com/articles/2006/10/03/209627/us-air-force-tanker-rfp-reveals-kc-777-offer.html |archive-url=https://web.archive.org/web/20090618113946/http://www.flightglobal.com/articles/2006/10/03/209627/us-air-force-tanker-rfp-reveals-kc-777-offer.html |archive-date=June 18, 2009 |title=US Air Force tanker RFP reveals KC-777 offer |work=Flight International |date=October 3, 2006 |access-date=April 21, 2009}}</ref><ref>{{cite web |url=http://www.boeing.com/news/frontiers/archive/2006/november/cover.pdf |title=Ready to fill 'er up |work=Boeing |date=November 2006 |access-date=April 21, 2009 |archive-date=August 13, 2011 |archive-url=https://web.archive.org/web/20110813035251/http://www.boeing.com/news/frontiers/archive/2006/november/cover.pdf |url-status=live}}</ref> In April 2007, Boeing offered its 767-based KC-767 Advanced Tanker instead of the KC-777 to replace the smaller [[Boeing KC-135 Stratotanker]] under the USAF's [[KC-X]] program.<ref>{{cite web |url=http://www.bizjournals.com/wichita/stories/2007/04/09/daily22.html |archive-url=https://web.archive.org/web/20110805072633/http://www.bizjournals.com/wichita/stories/2007/04/09/daily22.html |archive-date=August 5, 2011 |title=Boeing submits KC-767 tanker proposal |work=Wichita Business Journal |last=Vandruff |first=Ken |date=April 11, 2007 |access-date=March 20, 2009 |url-status=live}}</ref> Boeing officials have described the KC-777 as suitable for the related [[KC-Z]] program to replace the wide-body [[McDonnell Douglas KC-10 Extender]].<ref name="KC-Z">{{cite web |url=http://www.flightglobal.com/news/articles/usaf-lays-out-x-y-and-z-of-tanker-replacement-strategy-in-three-tranche-process-to-replace-ageing-210459/ |title=USAF lays out X, Y and Z of tanker replacement strategy in three-tranche process to replace ageing KC-135s |date=November 8, 2006 |first=Graham |last=Warwick |work=Flight International |access-date=August 14, 2014 |archive-date=August 14, 2014 |archive-url=https://web.archive.org/web/20140814134434/http://www.flightglobal.com/news/articles/usaf-lays-out-x-y-and-z-of-tanker-replacement-strategy-in-three-tranche-process-to-replace-ageing-210459/ |url-status=live}}</ref>
* In 2014, the [[Government of Japan|Japanese government]] chose to procure two 777-300ERs to serve as the official air transport for the [[Emperor of Japan]] and [[Prime Minister of Japan]].<ref name=JASDF>{{cite news |title=Japan chooses Boeing 777-300ER as government's official jet |url=http://www.japantimes.co.jp/news/2014/08/12/national/japan-chooses-boeing-777-300er-governments-official-jet/ |access-date=August 13, 2014 |agency=Jiji |work=Japan Times |date=August 12, 2014 |archive-date=June 28, 2017 |archive-url=https://web.archive.org/web/20170628073411/http://www.japantimes.co.jp/news/2014/08/12/national/japan-chooses-boeing-777-300er-governments-official-jet/ |url-status=live}}</ref> The aircraft, operated by the Japan Air Self-Defense Force under the callsign Japanese Air Force One, entered service in 2019 and replaced two 747-400s - the 777-300ER was specifically selected by the Ministry of Defense owing to its similar capabilities to the preceding 747 pair.<ref>{{cite news |title=政府専用機、後継の導入検討 官房長官 |url=http://www.nikkei.com/article/DGXNASFS1900G_Z10C13A7EB1000/ |access-date=March 10, 2020 |newspaper=日本経済新聞 |date=July 19, 2013 |archive-date=September 19, 2020 |archive-url=https://web.archive.org/web/20200919140652/https://www.nikkei.com/article/DGXNASFS1900G_Z10C13A7EB1000/ |url-status=live}}</ref> Besides VIP transport, the 777s are also intended for use in emergency relief missions.<ref name=JASDF/>
* 777s are serving or have served as official government transports for nations including [[Gabon]] (VIP-configured 777-200ER),<ref>{{cite web |url=http://conventiondiasporagabonaise.org/actualit%C3%A9s/actualit%C3%A9s-gabon/354-bien-mal-acquis-boeing-vip-777-236.html |archive-url=https://web.archive.org/web/20140403040247/http://conventiondiasporagabonaise.org/actualit%C3%A9s/actualit%C3%A9s-gabon/354-bien-mal-acquis-boeing-vip-777-236.html |archive-date=April 3, 2014 |title=Boeing 777 de Papa Romeo |work=Convention de la Diaspora Gabonaise |date=March 17, 2014 |access-date=August 14, 2014}}</ref> [[Turkmenistan]] (VIP-configured 777-200LR)<ref>"Turkmen Triple". ''Airliner World''. May 2014, p. 13.</ref> and the [[United Arab Emirates]] (VIP-configured 777-200ER and 777-300ER operated by [[Abu Dhabi Amiri Flight]]).<ref name=77WBBJ/> Prior to returning to power as [[Prime Minister of Lebanon]], [[Rafic Hariri]] acquired a 777-200ER as an official transport.<ref>{{cite news |url=http://news.bbc.co.uk/2/hi/middle_east/909269.stm |title=The battle for Lebanon's premiership |first=Christopher |last=Hack |date=September 3, 2000 |publisher=[[British Broadcasting Corporation|BBC]] |access-date=August 14, 2014 |archive-date=August 14, 2014 |archive-url=https://web.archive.org/web/20140814125144/http://news.bbc.co.uk/2/hi/middle_east/909269.stm |url-status=live}}</ref> The [[Indian government]] purchased two [[Air India]] 777-300ERs and converted them for VVIP transport operated by the [[Indian Air Force]] under the callsign [[Air India One]]; they entered service in 2021 replacing the Air India-owned 747s.<ref>{{cite web |url=https://www.indiatimes.com/news/india/narendra-modi-s-air-india-one-gets-rs-1300-cr-defence-upgrade-like-the-american-air-force-one-361756.html |title=Narendra Modi's Air India One Gets Rs 1300 Cr Defence Upgrade Like The American Air Force One |date=February 7, 2019 |website=indiatimes.com |access-date=March 31, 2019 |archive-date=March 31, 2019 |archive-url=https://web.archive.org/web/20190331155705/https://www.indiatimes.com/news/india/narendra-modi-s-air-india-one-gets-rs-1300-cr-defence-upgrade-like-the-american-air-force-one-361756.html |url-status=live}}</ref><ref>{{Cite web |date=2020-10-01 |title=WATCH: VVIP aircraft Air India One for President, PM arrives in Delhi |url=https://www.livemint.com/news/india/watch-vvip-aircraft-air-india-one-for-president-pm-arrives-in-delhi-11601553016767.html |access-date=2021-10-14 |website=mint |language=en}}</ref>
* In 2014, the USAF examined the possibility of adopting modified 777-300ERs or 777-9Xs to replace the [[Boeing 747-200]] aircraft used as [[Air Force One]].<ref name="Puget Sound Business Journal">{{cite news |last1=Wilhelm |first1=Steve |title=Will U.S. copy Japan and switch to 777 for Air Force One? |url=http://www.bizjournals.com/seattle/news/2014/08/12/will-u-s-copy-japan-and-switch-to-777-for-air.html |archive-url=https://web.archive.org/web/20140814225929/http://www.bizjournals.com/seattle/news/2014/08/12/will-u-s-copy-japan-and-switch-to-777-for-air.html |archive-date=August 14, 2014 |newspaper=Puget Sound Business Journal |access-date=September 14, 2014 |url-status=dead}}</ref> Although the USAF had preferred a four-engine aircraft, this was mainly due to precedent (existing aircraft were purchased when the 767 was just beginning to prove itself with ETOPS; decades later, the 777 and other twin jets established a comparable level of performance to quad-jet aircraft).<ref name="Puget Sound Business Journal"/> Ultimately, the Air Force decided against the 777, and selected the Boeing 747-8 to become the next presidential aircraft.<ref>{{cite news |url=https://www.af.mil/News/Article-Display/Article/562748/af-identifies-boeing-747-8-platform-for-next-air-force-one/ |title=AF Identifies Boeing 747-8 platform for next Air Force One |date=January 28, 2015 |access-date=January 28, 2015 |newspaper=U.S. Air Force |archive-date=March 3, 2016 |archive-url=https://web.archive.org/web/20160303175608/http://www.af.mil/News/ArticleDisplay/tabid/223/Article/562748/af-identifies-boeing-747-8-platform-for-next-air-force-one.aspx |url-status=live}}</ref>

===Aftermarket freighter conversions===
In the 2000s, Boeing began studying the conversion of 777-200ER and -200 passenger airliners into freighters, under the name 777 BCF (Boeing Converted Freighter).<ref>{{cite web |url=https://www.flightglobal.com/news/articles/boeing-reveals-cargo-conversion-development-studies-316341/ |title=Boeing reveals cargo conversion development studies for 777 |last=Sobie |first=Brendan |date=September 23, 2008 |work=Air Transport Intelligence via Flightglobal.com |access-date=October 19, 2010 |archive-date=November 17, 2015 |archive-url=https://web.archive.org/web/20151117020559/https://www.flightglobal.com/news/articles/boeing-reveals-cargo-conversion-development-studies-316341/ |url-status=live}}</ref> The company has been in discussion with several airline customers, including FedEx Express, [[UPS Airlines]], and [[GE Capital Aviation Services]], to provide launch orders for a 777 BCF program.<ref>{{cite web |url=https://www.flightglobal.com/news/articles/boeing-expects-to-secure-777bcf-launch-customer-in-e-348642/ |title=Boeing expects to secure 777BCF launch customer in early 2011 |last=Sobie |first=Brendan |date=October 19, 2010 |work=Air Transport Intelligence via Flightglobal.com |access-date=October 19, 2010 |archive-date=November 17, 2015 |archive-url=https://web.archive.org/web/20151117023215/https://www.flightglobal.com/news/articles/boeing-expects-to-secure-777bcf-launch-customer-in-e-348642/ |url-status=live}}</ref>

====777-300ER Special Freighter (SF)====
In July 2018, Boeing was studying a 777-300ER [[cargo aircraft|freighter]] conversion, targeted for the [[Volumetric weight|volumetric]] market instead of the density market served by the production 777F.<ref name=Leeham17jul2018/> After having considered a -200ER P2F program, Boeing was hoping to conclude its study by the Fall as the [[Boeing 777X|777X]] replacing aging -300ERs from 2020 will generate feedstock.<ref name="Leeham17jul2018">{{cite news |url=https://leehamnews.com/2018/07/17/farnborough-boeing-global-services-ponders-777-300er-p2f-program/ |title=Farnborough: Boeing Global Services ponders 777-300ER P2F program |date=July 17, 2018 |work=Leeham News |access-date=July 19, 2018 |archive-date=November 6, 2018 |archive-url=https://web.archive.org/web/20181106231016/https://leehamnews.com/2018/07/17/farnborough-boeing-global-services-ponders-777-300er-p2f-program/ |url-status=live}}</ref> New-build 777-300ERs may maintain the delivery rate at five per month, to bridge the production gap until the 777X is delivered.<ref>{{cite news |url=https://leehamnews.com/2018/10/23/boeings-growing-777x-challenge/ |title=Boeing's growing 777X challenge |date=October 23, 2018 |work=Leeham News |access-date=October 24, 2018 |archive-date=November 16, 2018 |archive-url=https://web.archive.org/web/20181116084818/https://leehamnews.com/2018/10/23/boeings-growing-777x-challenge/ |url-status=live}}</ref> Within the 811 777-300ERs delivered and 33 to be delivered by October 2019, GE Capital Aviation Services (GECAS) anticipates up to 150-175 orders through 2030, the four to five month conversion costing around $35 million.<ref name=Flight16oct2019/>

In October 2019, Boeing and [[Israeli Aerospace Industries]] (IAI) launched the 777-300ERSF passenger to freighter conversion program with GECAS ordering 15 aircraft and 15 options, the first aftermarket 777 freighter conversion program.<ref name=Flight16oct2019/> In June 2020, IAI received the first 777-300ER to be converted, from GECAS.<ref name=Flight28oct2020/> In October 2020, GECAS announced the launch operator from 2023: Michigan-based [[Kalitta Air]], already operating 24 747-400Fs, nine [[Boeing 767-300ER|767-300ERFs]] and three 777Fs.<ref name=Flight28oct2020>{{cite news |url=https://www.flightglobal.com/airframers/kalitta-to-be-launch-operator-of-777-300ersf-converted-freighter/140852.article |title=Kalitta to be launch operator of 777-300ERSF converted freighter |author=Jon Hemmerdinger |date=28 October 2020 |work=Flightglobal |access-date=October 29, 2020 |archive-date=November 1, 2020 |archive-url=https://web.archive.org/web/20201101034743/https://www.flightglobal.com/airframers/kalitta-to-be-launch-operator-of-777-300ersf-converted-freighter/140852.article |url-status=live}}</ref> IAI should receive the first aircraft in December 2020 while certification and service entry was scheduled for late 2022.<ref name=Flight16oct2019>{{Cite web |url=https://www.flightglobal.com/news/articles/gecas-and-iai-launch-777-300er-cargo-conversion-461491/ |title=GECAS and IAI launch 777-300ER cargo conversion |last=Kingsley-Jones |first=Max |date=October 16, 2019 |website=Flightglobal |language=en-GB |access-date=October 17, 2019 |archive-date=October 17, 2019 |archive-url=https://web.archive.org/web/20191017004631/https://www.flightglobal.com/news/articles/gecas-and-iai-launch-777-300er-cargo-conversion-461491/ |url-status=live}}</ref> By March 2023, IAI had completed the first flight of a 777-300ER Special Freighter, converted for AerCap, as it had a backlog over 60 orders.<ref>{{cite news |url=https://aircosmosinternational.com/article/the-world-s-first-successful-flight-of-a-b777-300er-converted-to-a-freighter-3743 |date=24 March 2023 |work=Air & Cosmos |title=The world's first successful flight of a B777-300ER converted to a freighter}}</ref> 

The 777-300ER Special Freighter has a maximum payload of {{cvt|101.6|t|lb|order=flip}}, a range of {{cvt|4,500|nmi}} and shares the door aperture and aft position of the 777F.<ref name=Flight16oct2019/> It has a cargo volume capacity of {{cvt|819|m3|cuft|order=flip}}, 5,800 cu ft (164 m<sup>3</sup>) greater than the 777F (or {{#expr:164/(8.19-1.64)round0}}% more) and can hold 47 standard [[Unit Load Device|96 x 125 in pallet]] (P6P) positions, 10 more positions than a 777F or eight more than a [[Boeing 747-400F|747-400F]].<ref name=Flight16oct2019/> With windows plugged, passenger doors deactivated, fuselage and floor reinforced, and a main-deck cargo door installed, the 777-300ERSF has 15% more volume than a 747-400BCF.<ref name=Flight28oct2020/>

===Experimental===
{{main|ecoDemonstrator}}
[[File:Boeing 777-200ER ecoDemonstrator N861BC.jpg|thumb|The 2022 ecoDemonstrator, a 777-200ER]]

Boeing has used 777 aircraft in two research and development programs. The first program, the [[Quiet Technology Demonstrator]] (QTD) was run in collaboration with Rolls-Royce and General Electric to develop and validate engine intake and exhaust modifications, including the chevrons subsequently used in the 737 MAX, 747-8 and 787 series. The tests were flown in 2001 and 2005.<ref name="BFrontiersQTD2">{{cite web |last1=Burnett |first1=Bob |title=Ssshhh, we're flying a plane around here |url=https://www.boeing.com/news/frontiers/archive/2005/december/ts_sf07.html |website=Boeing |access-date=19 November 2022 |date=December 2005}}</ref>

A further program, the [[ecoDemonstrator]] series, is intended to test and develop technologies and techniques to reduce [[Environmental effects of aviation|aviation's environmental impact]]. The program started in 2011, with the first ecoDemonstrator aircraft flying in 2012. Various airframes have been used since to test a wide variety of technologies in collaboration with a range of industrial partners. 777s have been used on three occasions as of 2024. The first of these, a 777F in 2018, performed the world's first commercial airliner flights using 100% [[Aviation biofuel|sustainable aviation fuel (SAF)]].<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=19 November 2022 |date=27 June 2019}}</ref> In 2022-4, the testbed is a 777-200ER.<ref name="Backgrounder 22">{{cite web |title=Backgrounder: The Boeing ecoDemonstrator Program (June 2022) |url=https://www.boeing.com/resources/boeingdotcom/principles/environment/pdf/BKG-ecoDemonstrator_2022.pdf |archive-url=https://web.archive.org/web/20220620120530/https://www.boeing.com/resources/boeingdotcom/principles/environment/pdf/BKG-ecoDemonstrator_2022.pdf |archive-date=2022-06-20 |url-status=live |page=3 |website=Boeing |access-date=22 November 2022}}</ref>