编辑“︁波音777X”︁

{{noteTA
|G1=Aero
|G2=Unit
|G3=USGov
|G4=IT
|G5=地名
|1=zh-cn:卡塔尔; zh-tw:卡達; zh-hk:卡塔爾; zh-sg:卡塔尔;全日空航空
|2=zh-hant:阿聯酋航空;zh-hans:阿联酋航空;
|3=zh-hant:廣體;zh-hans:宽体;
|4=zh-hant:空中巴士;zh-hans:空中客车;
}}
{{Infobox aircraft
| name = 波音777X
| image = 777X Roll-Out (40407373023).jpg
| caption = 第一架波音777X
| long caption = 
| type = [[宽体飞机]]
| national origin = {{US}}
| manufacturer = [[波音民用飞机集团]]
| designer = <!--only appropriate for single designers, or project leaders-->
| produced = 2017年－
| first flight = 2020年1月25日
| introduced = 預計2027年（原訂2025年服役，後來因為一些問題而延後）<ref>{{cite web |author1=Dominic Gates |title=Citing a serious flight test incident and lack of design maturity, FAA slows Boeing 777X certification |url=https://www.seattletimes.com/business/boeing-aerospace/citing-a-serious-flight-test-incident-and-lack-of-design-maturity-faa-slows-boeing-777x-certification/ |website=The Seattle Times |accessdate=2022-02-15 |date=2021-06-27 |archive-date=2022-06-12 |archive-url=https://web.archive.org/web/20220612173406/https://www.seattletimes.com/business/boeing-aerospace/citing-a-serious-flight-test-incident-and-lack-of-design-maturity-faa-slows-boeing-777x-certification/ }}</ref><ref>{{Cite web |last=Velani |first=Bhavya |date=2026-03-06 |title=World's First Customer of New Boeing 777X Expects Delivery in 2027 |url=https://aviationa2z.com/index.php/2026/03/06/worlds-first-customer-of-new-boeing-777x-expects-delivery-in-2027/ |access-date=2026-04-02 |website=Aviation A2Z |language=en}}</ref>
| retired = 
| status = 试飞中
| primary user = [[阿聯酋航空]] <br />[[卡達航空]] <br />[[漢莎航空]] <br />[[國泰航空]] <br />[[新加坡航空]]<br />[[阿提哈德航空]]<br />[[全日本空輸]] <br />[[中華航空]]
| more users = 
| number built = 5（測試機）
| unit cost = 
| developed from = [[波音777]]
}}

'''波音777X'''系列是[[波音777]]家族當中正在研發的最新機種。777X將有777-8、777-9以及777-8F貨機三個分支型號。[[波音公司]]宣稱，這款飛機將會是全球最大及最有效率的雙[[发动机|發動機]]客機<ref>[http://www.boeing.com/paris2013/pdf/BCA/fct-777X-June%202013.pdf "Boeing 777X fact sheet"] {{Wayback|url=http://www.boeing.com/paris2013/pdf/BCA/fct-777X-June%202013.pdf |date=20131125200000 }} Boeing, June 2013.</ref>。777X將採用[[波音787]]的設計理念，並使用新的發動機（[[通用电气GE9X|通用電氣GE9X]]）丶全新的[[复合材料|複合材料]]機翼及[[可折疊機翼]]。此款客機的主要競爭對手是[[空中客车A350 XWB|空中巴士A350 XWB]]，其中777-9X原型機已在2018年11月完成所有製造程序，並已於2019年3月[[下線]]，原訂在2019年3月13日進行下線儀式及對外開放參觀，但因2019年3月10日發生[[埃塞俄比亚航空302号班机空难|埃塞俄比亞航空302號班機空難]]，故波音決定取消這兩個活動。2020年1月25日，波音777-9X正式[[首飞]]<ref>{{cite news|url=https://www.forbes.com/sites/jamesasquith/2020/01/25/first-flight-boeings-777x-finally-takes-to-the-skies-on-its-maiden-flight/#11ed71863f74|title=First Flight: Boeing’s 777x Finally Takes To The Skies On Its Maiden Flight|publisher=[[福布斯]]|date=2020-01-25|accessdate=2020-01-26|archive-date=2021-01-26|archive-url=https://web.archive.org/web/20210126024419/https://www.forbes.com/sites/jamesasquith/2020/01/25/first-flight-boeings-777x-finally-takes-to-the-skies-on-its-maiden-flight/#11ed71863f74|dead-url=no}}</ref>，然而隨後碰到疫情導致服役前景陷入不確定，因此波音隨後確定延後推出<ref>{{Cite web |url=https://ec.ltn.com.tw/article/breakingnews/3240129 |title=存档副本 |access-date=2022-12-14 |archive-date=2023-07-26 |archive-url=https://web.archive.org/web/20230726085244/https://ec.ltn.com.tw/article/breakingnews/3240129 |dead-url=no }}</ref>。

据[[路透社]]报道，[[阿联酋航空|阿聯酋航空]]CEO Tim Clark在2021年1月13日表示，波音777X可能需要到2023年甚至更晚才会服役，因為這架飛機的研發時間以及認證過程仍存在不確定性。

阿聯酋航空原定訂購150架波音777X，然而部分訂單已經被轉換為787，現在的訂單數為126架{{fact}}。這批飛機原預計於2020年6月加入阿聯酋航空機隊，由於研發過程中的延誤，以及[[2019年波音737 MAX停飞事件|737MAX事件]]後所帶來更高層次的認證審查後，導致這款飛機投入市場的時間也進一步拖延。Tim Clark在接受路透社採訪時表示：「這是一個飛機何時完工、獲得認證並投入服務的問題，我們也將持續關注波音如何處理這一問題」。

==研發==

===提案===
波音公司在2011年9月發佈了新版777客機的資料，當時名稱暫定為777-8X與777-9X，統稱為777X。與777-300ER相比，777-9X三級艙等配置將可搭載407名乘客，該機型將配置更長的[[尾翼|水平尾翼]]，且機身將比777-300ER延長2.8公尺，總長度將為76.7公尺，超過[[波音747-8|747-8]]的76.3公尺，取代747-8成為世界上最長的客機<ref>{{cite news |url= http://www.flightglobal.com/news/articles/boeing-studies-ultra-long-range-777-8lx-concept-368176/ |title= Boeing studies ultra long-range 777-8LX concept |author= Ostrower, Jon |work= Air Transport Intelligence via [[Flightglobal.com]] |date= February 13, 2012 |accessdate= February 13, 2012 |archive-date= 2012-02-15 |archive-url= https://web.archive.org/web/20120215230221/http://www.flightglobal.com/news/articles/boeing-studies-ultra-long-range-777-8lx-concept-368176/ |dead-url= no }}</ref>。此外，翼展計劃將由777-300ER的64.8公尺延伸到71.8公尺，並採用[[复合材料|碳纖維複合材料]]<ref>{{cite web |url=http://www.boeing.com/commercial/777family/specs.html |title=Boeing 777 – Technical Information |work=Boeing |accessdate=October 9, 2011 |archive-date=2013-03-12 |archive-url=https://web.archive.org/web/20130312153151/http://www.boeing.com/commercial/777family/specs.html |dead-url=no }}</ref>。與777-300ER的{{convert|775000|lb|kg|abbr=on}}相較，777-9的總重量將略降為{{convert|759000|lb|kg|abbr=on}}。<ref>{{cite web |url=http://www.flightglobal.com/news/articles/boeing-homes-in-on-late-2012-launch-for-777-successor-369241/ |title=Boeing homes in on late-2012 launch for 777 successor |first=John |last=Ostrower |work=Flight International |date=March 7, 2012 |accessdate=March 20, 2012 |archive-date=2016-03-05 |archive-url=https://web.archive.org/web/20160305025653/https://www.flightglobal.com/news/articles/boeing-homes-in-on-late-2012-launch-for-777-successor-369241/ |dead-url=no }}</ref>波音公司也計劃研發超長程的777-8LX，用來取代777-200LR，航程將由777-200LR的{{convert|9395|nmi|mi km|abbr=on}}，略為延伸至{{convert|9480|nmi|mi km|abbr=on}}，但是在同樣三級艙等的配置下，777-8LX可以比777-200LR多搭載39名乘客，因為機艙內部更大，所以座位也會更寬敞。該型客機將與777-9有相同的油箱容量和總重量，但機身長度將與777-8X的{{convert|229|ft|abbr=on|sigfig=3}}相同。

為了配合777X，[[奇異公司|通用电气]]在2012年2月發布了[[通用电气GE9X发动机|GE9X]]發動機。此發動機大小將與前一代的GE90-115B（{{convert|128|in|cm|abbr=on|disp=or|sigfig=3}}）相同，但推進力將略微下降。在777-9X與777-8LX上將為{{convert|99500|lbf|kN|abbr=on}}，在777-8上將為{{convert|88000|lbf|kN|abbr=on}}<ref>{{cite web|url=http://www.flightglobal.com/news/articles/ge-plans-10-fuel-burn-improvement-for-ge9x-engine-369242/|title=GE plans 10% fuel burn improvement for GE9X engine|first=John|last=Ostrower|work=Flight International|date=March 7, 2012|accessdate=March 20, 2012|archive-date=2016-05-07|archive-url=https://web.archive.org/web/20160507230447/https://www.flightglobal.com/news/articles/ge-plans-10-fuel-burn-improvement-for-ge9x-engine-369242/|dead-url=no}}</ref><ref>{{cite web |url=http://www.flightglobal.com/news/articles/next-generation-777-comes-into-focus-362065/ |title=Next generation 777 comes into focus |first=Jon |last=Ostrower |work=Flight International |date=September 14, 2011 |accessdate=November 12, 2011 |archive-date=2016-03-05 |archive-url=https://web.archive.org/web/20160305040934/https://www.flightglobal.com/news/articles/next-generation-777-comes-into-focus-362065/ |dead-url=no }}</ref><ref>{{cite web |url=http://www.flightglobal.com/blogs/flightblogger/2011/09/boeings-777-upgrades-come-into.html |title=Boeing's 777-9X comes into focus with a massive CFRP wing |date=September 14, 2011 |work=Flightblogger |first=Jon |last=Ostrower |accessdate=November 12, 2011 |archive-date=2013-04-06 |archive-url=https://web.archive.org/web/20130406184237/http://www.flightglobal.com/blogs/flightblogger/2011/09/boeings-777-upgrades-come-into.html |dead-url=no }}</ref>。當時，[[普惠公司|普惠]]及[[罗尔斯·罗伊斯控股|勞斯萊斯]]也發表幾款發動機的計劃來配合777X，包括由[[劳斯莱斯遄达1000|Trent 1000]]與[[罗尔斯·罗伊斯遄达XWB|Trent XWB]]改進而來的RB3025，與更新[[普惠PW1000G发动机|PW1000G]]，以提供高達{{convert|100000|lbf|kN|abbr=on}}的推進力<ref name=777special>{{cite web |url=http://www.flightglobal.com/Features/Boeing-777-special/ |title=A special look at the future prospects of the Boeing 777 |work=Flight International |date=March 2012 |accessdate=March 10, 2012 |archive-date=2015-07-09 |archive-url=https://web.archive.org/web/20150709070900/http://www.flightglobal.com/Features/Boeing-777-special/ |dead-url=no }}</ref>。但是波音公司在2013年3月選定GE9X為777X系列的唯一發動機選擇<ref>{{cite web |url=http://www.reuters.com/article/2013/03/16/us-boeing-ge-idUSBRE92E12020130316 |title=Boeing selects GE as sole engine partner on next 777 plane |work=[[Reuters]] |date=March 15, 2013 |accessdate=March 19, 2013 |archive-date=2015-09-30 |archive-url=https://web.archive.org/web/20150930045349/http://www.reuters.com/article/2013/03/16/us-boeing-ge-idUSBRE92E12020130316 |dead-url=yes }}</ref>。之後，奇異公司也更新了GE9X的設計，以提供更高的推進力。新的規格將提供高達{{convert|105000|lbf|kN|abbr=on}}的推進力，風扇直徑將為{{convert|134|in|cm|abbr=on|sigfig=3}}，成為該公司有史以來製造過的最大發動機<ref name="www.aspireaviation.com">{{cite web|url=http://www.aspireaviation.com/2013/10/24/boeing-widebody-dominance-777x-success/|title=Boeing’s widebody dominance hinges on 777X success|work=Aspire Aviation|accessdate=November 20, 2013|archive-date=2017-07-10|archive-url=https://web.archive.org/web/20170710054208/http://www.aspireaviation.com/2013/10/24/boeing-widebody-dominance-777x-success/|dead-url=no}}</ref><ref>{{cite web|url=http://www.geaviation.com/newengine/|title=GE9X - GE Aviation|publisher=''General Electric''|year=2013|accessdate=July 1, 2013|archive-url=https://web.archive.org/web/20130725001557/http://www.geaviation.com/newengine/|archive-date=2013-07-25|dead-url=yes}}</ref><ref>{{Cite video |title=The New GE9X Engine |url=http://www.youtube.com/watch?v=qVVj2ddb-eQ |date=June 17, 2013 |publisher=''General Electric'' |accessdate=July 1, 2013 |archive-date=2013-08-23 |archive-url=https://web.archive.org/web/20130823142517/http://www.youtube.com/watch?v=qVVj2ddb-eQ |dead-url=no }}</ref><ref>{{cite web |url=http://www.ainonline.com/aviation-news/paris-air-show/2013-06-16/ge-pushes-envelope-ge9x-new-boeing-777 |title=GE Pushes Envelope With GE9X for New Boeing 777 |last=Alcock |first=Charles |date=June 16, 2013 |work=Aviation International News |accessdate=July 1, 2013 |archive-date=2014-10-21 |archive-url=https://web.archive.org/web/20141021213858/http://www.ainonline.com/aviation-news/paris-air-show/2013-06-16/ge-pushes-envelope-ge9x-new-boeing-777 |dead-url=no }}</ref>。只提供一種發動機的選擇在後來引發一些爭議。一些航空公司覺得這樣將讓發動機製造商之間失去競爭。航空租賃公司的總裁烏德瓦哈茲則表示希望能有多種發動机可以選擇。但[[空中客车|空中巴士]]卻曾指出，設計一架可以裝配不同發動機的客機將讓該客機的售價變高<ref>{{cite news|author=Robert Wall, Jon Ostrower and Rory Jones|url=https://www.wsj.com/articles/aircraft-makers-narrow-engine-options-1405457174|title=Aircraft Makers Narrow Engine Options|work=Wall Street Journal|date=July 15, 2014|url-access=subscription|access-date=October 23, 2017|archive-date=October 23, 2017|archive-url=https://web.archive.org/web/20171023231135/https://www.wsj.com/articles/aircraft-makers-narrow-engine-options-1405457174|url-status=live}}</ref>。

===777X專案===
[[File:777x model front.png|thumb|2014年2月在[[新加坡]][[航展]]上展出的777X模型]]
波音的董事會在2013年5月正式核准該公司的民航部門開始銷售777X<ref name=777xapproval>{{cite web |title=Boeing Board Gives Approval To Offer 777X |url=http://www.aviationweek.com/Article.aspx?id=/article-xml/awx_05_01_2013_p0-575533.xml |first=Guy |last=Norris |work=[[Aviation Week & Space Technology]] |accessdate=July 1, 2013 |date=May 1, 2013 |archive-date=2013-05-09 |archive-url=https://web.archive.org/web/20130509200913/http://www.aviationweek.com/Article.aspx?id=%2Farticle-xml%2Fawx_05_01_2013_p0-575533.xml |dead-url=no }}</ref>。[[漢莎航空]]的董事會於2013年9月18日批准了訂購34架波音777-9X客機與25架的空中巴士A350，用來取代機隊中的A340與747-400客機。在當時，波音公司已經有意在2013年中正式推出777X<ref>{{cite web |title=Split Lufthansa widebody order includes firm 777X |url=http://www.flightglobal.com/news/articles/split-lufthansa-widebody-order-includes-firm-777x-390732/ |first=Michael |last=Gubisch |work=Flight Global |accessdate=September 19, 2013 |date=September 19, 2013 |archive-date=2016-01-02 |archive-url=https://web.archive.org/web/20160102165415/https://www.flightglobal.com/news/articles/split-lufthansa-widebody-order-includes-firm-777x-390732/ |dead-url=no }}</ref><ref name=lh777>[http://boeing.mediaroom.com/2013-09-19-Boeing-Statement-on-Lufthansa-Selection-of-Boeing-777X-for-Future-Long-Haul-Fleet "Boeing Statement on Lufthansa Selection of Boeing 777X for Future Long-Haul Fleet"] {{Wayback|url=http://boeing.mediaroom.com/2013-09-19-Boeing-Statement-on-Lufthansa-Selection-of-Boeing-777X-for-Future-Long-Haul-Fleet |date=20170723115231 }}. Boeing, September 19, 2013.</ref><ref>{{cite web |url=http://www.flightglobal.com/fg-club/in-focus/lufthansa-widebody-order/ |title=Lufthansa widebody order |last=Gubisch |first=Michael |date=October 2013 |publisher=Flight Global |accessdate=September 12, 2014 |archive-date=2015-07-09 |archive-url=https://web.archive.org/web/20150709042722/http://www.flightglobal.com/fg-club/in-focus/lufthansa-widebody-order/ |dead-url=no }}</ref>。同年的十月，波音公司宣布，777X的設計將由在美國的[[查尔斯顿_(南卡罗来纳州)|查爾斯頓]]、[[亨茨维尔_(亚拉巴马州)|亨茨維爾]]、[[長灘_(加利福尼亞州)|長堤市]]、[[費城]]、[[圣路易斯_(密苏里州)|聖路易]]的團隊，與在[[俄羅斯]][[莫斯科|莫斯科]]的團隊一起負責開發<ref>{{cite web |title=Boeing spreads 777X design work to Charleston, Moscow, defence sites |url=http://www.flightglobal.com/news/articles/boeing-spreads-777x-design-work-to-charleston-moscow-defence-sites-392371/ |date=October 30, 2013 |work=Flight Global |accessdate=October 31, 2013 |archive-date=2016-01-02 |archive-url=https://web.archive.org/web/20160102165415/https://www.flightglobal.com/news/articles/boeing-spreads-777x-design-work-to-charleston-moscow-defence-sites-392371/ |dead-url=no }}</ref>。

[[File:Emirates Boeing 777 fleet at Dubai International Airport Wedelstaedt.jpg|thumb|right|停靠在杜拜國際機場的[[阿联酋航空]]777客機。該公司將為777X的啟用客戶之一。|alt=View of airport tarmac with terminal building and multiple airliners parked adjacent to it.]]

波音正式在2013年11月的杜拜航空展中推出了777X，市場反應熱烈，波音獲得259架、總價超過950億美元的訂單。波音表示，這是商用航空新機發表有史以來最高訂單總價紀錄<ref name=wilhelm2013>{{cite journal |last=Wilhelm |first=Steve |date=November 13, 2013 |title=Boeing Launches 777X with Orders for 259 Jets Worth $95B |url=http://www.bizjournals.com/seattle/news/2013/11/17/boeing-launches-777x-with-orders-for.html?page=all |journal=Puget Sound Business Journal |location=Seattle, Washington |publisher=American City Business Journals |deadurl=no |archiveurl=https://www.webcitation.org/6LEAKAETQ?url=http://www.bizjournals.com/seattle/news/2013/11/17/boeing-launches-777x-with-orders-for.html?page=all |archivedate=2013-11-18 |accessdate=November 13, 2013 |quote=The 777X launch customers [...] providing a total launch order [or commitments] of 259 aircraft worth more than $95 billion. |author= }}</ref><ref>{{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 |accessdate=April 5, 2014 |archive-date=2014-02-13 |archive-url=https://web.archive.org/web/20140213081058/http://boeing.mediaroom.com/2013-11-17-Boeing-Launches-777X-with-Record-Breaking-Orders-and-Commitments |dead-url=no }}</ref><ref name='BBC Dubai 1'>{{cite news |author=<!--Staff writer(s); no by-line.--> |date=November 17, 2013 |title=Dubai Air Show: Boeing Leads Order Books Race |url=http://www.bbc.co.uk/news/business-24978226 |deadurl=no |publisher=[[BBC]] |work=BBC News |at=Business |accessdate=November 17, 2013 |quote=Boeing said its 777 mini-jumbo sales represented 'the largest product launch in commercial jetliner history by dollar value'. |archive-date=2013-11-17 |archive-url=https://web.archive.org/web/20131117145848/http://www.bbc.co.uk/news/business-24978226 }}</ref>。在杜拜航空展期間，[[阿联酋航空]]訂購了150架777X，[[阿提哈德航空]]訂購了25架，[[卡塔尔航空]]則訂購了50架<ref name=wilhelm2013/><ref name=norris2013>{{cite news |last=Norris |first=Guy |date=November 17, 2013 |title=Boeing Launches 777X in Dubai Order Boom |url=http://www.aviationweek.com/Article.aspx?id=/article-xml/awx_11_17_2013_p0-637685.xml |work=Aviation Week |publisher=Penton |accessdate=November 17, 2013 |deadurl=no |archive-date=2013-12-03 |archive-url=https://web.archive.org/web/20131203073955/http://www.aviationweek.com/Article.aspx?id=%2Farticle-xml%2Fawx_11_17_2013_p0-637685.xml }}</ref><ref name='LufthansaSep13'>{{cite press release |author=<!--Staff writer(s); no by-line.--> |date=September 19, 2013 |title=Modern, Quiet and Environmentally Efficient: Lufthansa Group Orders 59 Ultra-Modern Wide-Body Boeing 777-9X and Airbus A350-900 Aircraft |url=http://www.lufthansagroup.com/en/press/news-releases/singleview/archive/2013/september/19/article/2599.html |deadurl=yes |work=Lufthansa Group |publisher=Deutsche Lufthansa AG |accessdate=November 17, 2013 |quote=... 34 Boeing 777-9Xs and 25 Airbus A350-900s will be added to the Lufthansa Group's wide-body fleet. |archive-url=https://web.archive.org/web/20131012071952/http://www.lufthansagroup.com/en/press/news-releases/singleview/archive/2013/september/19/article/2599.html |archive-date=2013-10-12 }}</ref> 。

777X的專案將有兩個型號。一個是比777-300ER機身還要長的777-9，另一個則是與777-300ER長度相仿但可以飛更遠的777-8<ref name=norris2013/>。因為777X要等到2020年才會開始交付，如何維持現有的777產線的產能，是波音的一項新挑戰，該產線的目標是每年生產100架的777客機，也就是到2020年前要有總共600架的訂單。但是截至2013年年底，只有380架的777訂單等待製造與交付，在近期航空展中也沒有新的訂單。為了刺激買氣，波音公司計劃把777搭配777X一起銷售，也計劃提供讓現有客戶把777客機改裝為貨機的服務<ref>Ostrower, Jon. [http://online.wsj.com/news/articles/SB10001424052702304703804579380830515165164 "Boeing plans new tactics to sell 777"] {{Wayback|url=http://online.wsj.com/news/articles/SB10001424052702304703804579380830515165164 |date=20140307090242 }}. Wall Street Journal, February 13, 2014.</ref>。

[[香港]][[國泰航空]]在2013年12月訂購了21架777-9，預定於2021年到2024年間交付<ref>{{cite web |title=Cathay Pacific orders 21 Boeing 777X planes |url=http://www.channelnewsasia.com/news/business/cathay-pacific-orders-21/929410.html |publisher=Channel News Asia |accessdate=27 December 2013 |archive-date=2013-12-27 |archive-url=https://web.archive.org/web/20131227132944/http://www.channelnewsasia.com/news/business/cathay-pacific-orders-21/929410.html |dead-url=no }}</ref>。截至2014年4月，777系列的累積訂單數量超越747系列，成為最暢銷的[[廣體飛機|廣體客機]]。以目前的生產產能，777系列也會在2016年年中成為交付最多的廣體客機<ref>{{cite web |url=http://www.flightglobal.com/news/articles/analysis-how-the-777-pushed-boeing-forward-398233/ |title=How the 777 pushed Boeing forward |first=Stephen |last=Trimble |work=Flight International |date=April 15, 2014 |accessdate=April 20, 2014 |archive-date=2016-01-02 |archive-url=https://web.archive.org/web/20160102165415/https://www.flightglobal.com/news/articles/analysis-how-the-777-pushed-boeing-forward-398233/ |dead-url=no }}</ref>。阿聯酋航空在2014月7月確認了150架777X的訂單，其中包括115架的777-9與35架的777-8<ref>{{cite web |url= http://www.flightglobal.com/news/articles/split-lufthansa-widebody-order-includes-firm-777x-390732/ |title= Emirates finalises order for 150 777X jets |author= Kaminski-Morrow, David |work= Flight Global |accessdate= July 9, 2014 |date= September 12, 2014 |archive-date= 2016-01-02 |archive-url= https://web.archive.org/web/20160102165415/https://www.flightglobal.com/news/articles/split-lufthansa-widebody-order-includes-firm-777x-390732/ |dead-url= no }}</ref>。卡達航空則在同月決定了50架的777-9X確認訂單，與50架的777-9選購訂單。[[全日空]]在7月31日也下了20架777-9的訂單<ref name="#1">{{Cite web |url=http://boeing.mediaroom.com/2014-07-31-Boeing-All-Nippon-Airways-Finalize-Order-for-40-Widebody-Airplanes |title=存档副本 |access-date=2014-11-07 |archive-date=2016-11-29 |archive-url=https://web.archive.org/web/20161129190324/http://boeing.mediaroom.com/2014-07-31-Boeing-All-Nippon-Airways-Finalize-Order-for-40-Widebody-Airplanes/ |dead-url=no }}</ref>。

===生產及測試===
第一架樣機於2018年11月完成。同月底，電力系統-{啟動}-。波音預計在2019年在第二季首飛，但因GE9X发动机出了问题，波音将首飞日期延至2020年初。2019年9月5日，波音777X进行高压应力测试时，一扇貨舱门向外爆炸。9月6日，波音暂停777X的测试<ref>{{Cite web |url=https://m.nbd.com.cn/articles/2019-09-08/1370032.html |title=737MAX还在停飞，777X测试时舱门炸开！波音添堵，空客“躺赢”？ |access-date=2019-09-09 |archive-date=2021-01-19 |archive-url=https://web.archive.org/web/20210119150546/https://m.nbd.com.cn/articles/2019-09-08/1370032.html |dead-url=no }}</ref><ref>{{cite news |url= http://aviationweek.com/commercial-aviation/boeing-completes-final-body-join-first-777-9 |title= Boeing Completes Final Body Join For First 777-9 |date= Nov 20, 2018 |author= Guy Norris |work= Aviation Week Network }}{{Dead link}}</ref>。2020年1月25日，777X正式首飞；同年4月30日及8月3日，第二及第三架777X樣機亦分別開始試飛，當中前者用於獲取飛行包線數據<ref>{{cite press release |url= https://boeing.mediaroom.com/2020-04-30-Second-Boeing-777X-Completes-First-Flight |title= Second Boeing 777X Completes First Flight |publisher= Boeing |date= April 30, 2020 |access-date= 2021-01-14 |archive-date= 2021-01-25 |archive-url= https://web.archive.org/web/20210125012052/https://boeing.mediaroom.com/2020-04-30-Second-Boeing-777X-Completes-First-Flight |dead-url= no }}</ref>，而後者用於航電、荷載及推進測試<ref name=Flight4aug2020>{{cite news |url= https://www.flightglobal.com/airframers/boeings-third-777x-aircraft-begins-flight-testing/139624.article |title= Boeing’s third 777X aircraft begins flight testing |author= Pilar Wolfsteller |date= 4 August 2020 |accessdate= 2020-09-09 |archive-date= 2021-01-25 |archive-url= https://web.archive.org/web/20210125223121/https://www.flightglobal.com/airframers/boeings-third-777x-aircraft-begins-flight-testing/139624.article |dead-url= no }}</ref>。

2025年11月6日，聯邦航空安全局批-{准}-波音777X項目，展開第三至第五階段{{notetag|整個取得型號合格證的程-{序}-共有五個階段。}}的取證測試<ref>{{Cite web |last=Ostrower |first=Jon |date=2025-11-10|title=Boeing gets FAA nod to begin next major phase of 777X certification trials |url=https://theaircurrent.com/aircraft-development/boeing-faa-777x-certification-trials/#:~:text=Closely%2Dwatched%20TIA%20Phase%203,of%20air%20and%20ground%20evaluations. |access-date=2025-11-10 |website=The Air Current}}</ref>。

2026年2月4日，波音宣佈首架777X量產機預計於4月首飛，而該機預計交付予啟始客戶-[[漢莎航空]]<ref>{{cite web|url=https://www.reuters.com/business/autos-transportation/boeing-plans-first-flight-production-777x-april-document-shows-2026-02-04/|title=Boeing plans first flight of production 777X in April, document shows|date=2026-02-03|first=Dan|last=Catchpole|website=路透社|access-date=2026-04-02}}</ref>。直至同年5月8日，該機正式首飛<ref name=":1">{{Cite web |title=Lufthansa’s first 777-9 takes flight |url=https://www.boeing.com/features/2026/05/lufthansas-first-777-9-takes-flight |access-date=2026-05-13 |website=www.boeing.com |language=en-US}}</ref>。

==設計==
777X將引進諸多在[[波音787|787]]的設計理念。例如，更大的窗戶，挑高的天花板，增高艙壓到等同海拔{{convert|6000|ft|m}}，與維持較高的濕度。為了提供這些新的設計與更大的客艙寬度，機身結構也會一併更新<ref name=cnet>{{cite web |url=http://www.cnet.com/news/boeings-777x-plans-big-windows-lots-of-air-and-robot-manufacturing/ |title=Boeing's 777X plans: Big windows, lots of air, and robot manufacturing - CNET |first=Stephen |last=Shankland |work=cnet.com |date=July 15, 2014 |accessdate=July 18, 2014 |archive-date=2016-03-14 |archive-url=https://web.archive.org/web/20160314182141/http://www.cnet.com/news/boeings-777x-plans-big-windows-lots-of-air-and-robot-manufacturing/ |dead-url=no }}</ref>。

[[File:777X Roll-Out (40407369583).jpg|thumb|2019年777X展出時的照片，圖中可見777X的可折疊機翼。]]

777X的機翼為71.75米，將比777-300ER的64.8米多出6.95米。所以波音公司將把777X的機翼設計成可以折疊。起飛前，機師需要手動把機翼展開。客機降落後，當速度降低到50節的時候，電腦會自動把機翼折起。折起後的翼展將為64.85米，這讓777X可使用65米寬的E類停機位，與777相同，不需要像[[波音747|747]]和[[A380]]一樣使用80米寬的F類停機位。機翼折疊的設計早在777-200時就已提供，只是當時並沒有任何航空公司採用。波音宣稱，如同[[翼尖小翼]]一樣，機翼折疊機制將設計到在飛行中絕對不會斷落<ref>{{Cite web |url=http://aviationweek.com/commercial-aviation/boeing-details-777x-wing-tip-control-options |title=存档副本 |access-date=2014-11-08 |archive-date=2019-10-25 |archive-url=https://web.archive.org/web/20191025234509/https://aviationweek.com/commercial-aviation/boeing-details-777x-wing-tip-control-options |dead-url=no }}</ref><ref>{{Cite web |url=http://www.flightglobal.com/news/articles/boeing-tweaks-777x-wingspan-preserves-folded-length-400179/ |title=存档副本 |access-date=2014-11-08 |archive-date=2016-11-07 |archive-url=https://web.archive.org/web/20161107155410/https://www.flightglobal.com/news/articles/boeing-tweaks-777x-wingspan-preserves-folded-length-400179/ |dead-url=no }}</ref>。

值得一提的是，777X的概念設計圖當中GE9X發動機外殼採用類似Rolls Royce Trent 1000、GEnx-1B（兩者應用於787）、GEnx-2B（應用於747-8）以及CFM LEAP-1B（應用於737 MAX）相同的波浪尖刺狀的蛋殼尾部造型，該設計能降低噪音，但由於GE9X發動機當中蛋殼設計的空氣阻力較大，會比較耗油。考慮到777是強調較長航程而取消該設計，最終設計改為傳統平滑設計的發動機外殼。

==衍生型號==
===777-8===
777-8的長度與777-300ER相仿，在三級艙等的配置可以搭載350乘客，航程為{{convert|8745|nmi|km|abbr=on}}以上。此型客機將用來取代777-200LR，成為[[空中客车A350 XWB|空中巴士A350-1000]]的競爭對手<ref name="www.aspireaviation.com" /><ref name=norris2013/><ref name=AspireAviation_All_Fronts/>。機艙的內部寬度將會比現有的777還大，由5.86公尺加大到5.969公尺，可以讓一排配置達到10個座位時，每個座位寬度為{{convert|45.72|cm|in|1|abbr=on}}<ref name="www.aspireaviation.com" /><ref name="Skift.com">{{cite web|last1=Garcia|first1=Marisa|title=Boeing’s New 777X Designs Intensify the Race for Space on Airlines|url=http://skift.com/2014/07/23/boeings-new-777x-designs-intensify-the-race-for-space-on-airlines/#1|publisher=Skift.com|accessdate=2014-08-07|archive-date=2016-12-30|archive-url=https://web.archive.org/web/20161230090255/https://skift.com/2014/07/23/boeings-new-777x-designs-intensify-the-race-for-space-on-airlines/#1|dead-url=no}}</ref>。

由於[[2019年波音737 MAX停飞事件|737 MAX停飞事件]]及777-9的研發出現問題，波音暂停了777-8的研发工作至2021年，首次交付推遲至2023年。

2023年7月，波音執行777-8客機的機身尺寸改良，將原先69.8m加長至與777-8F貨機同為70.9m，總定員由384席加到395席，續航能力則是16,170km加長至16,190km，尺寸跟貨機相同。

===777-9===
[[File:Passenger Experience Week 2018, Hamburg (1X7A3836) (cropped).jpg|thumb|2018年4月展出的模型]]
[[File:Boeing 777X-9 model ILA 2018.png|thumb|upright=2|B777-9X在三級艙等配置可以搭載407乘客]]
777-9的重量與上代777-300ER相同，不過機身較長，可容納多三排座位多賣27-30張票，且更高的效率令飛行距離增加了220海浬（400公里）。機艙內部寬度將與777-8相同，三級艙等配置可以搭載407乘客，航程為{{convert|7285|nmi|km|abbr=on}}以上。因為747與A380均已經停產，波音公司強調此一型客機在市場上將沒有競爭對手<ref name="www.aspireaviation.com" /><ref name="lh777" />。

777-9原訂於2017年末開始生產，多次延期后預計於2022年開始交付營運，之後再度拖延到2025以後。[[德國漢莎航空|漢莎航空]]及[[阿聯酋航空]]將成為此型號的首批用户。<ref name=norris2013/><ref name="www.aspireaviation.com" />其将取代波音747-8成為世界上機身最長的民航機。首架飛行試驗飛機（N779XW，生產序號1567）於2018年11月完成，并于2019年3月下线。由於777-9X的下线时间正好为埃塞俄比亚航空302号班机空难发生3天后，故波音取消了下线仪式以及开发参观的计划。由於[[通用电气GE9X发动机]]的轉子需要重新設計及高壓應力測試時出現客艙門向外爆炸，首次飛行最終推遲至2020年1月25日。

2020年8月，777-9首次轉場至[[波音機場]]，並繼續在華盛頓州內進行密集式試飛。至同年9月29日，首兩架777-9同步轉場至亞利桑那州[[尤馬國際機場]]，是同型號飛機首次離開華盛頓州。

2021年11月，777-9首次於杜拜航展上公開展出及進行飛行表演，並於2022年2月再在新加坡航展上展示<ref>{{cite web|url=https://www.chinaerospace.com/article/961|title=波音首次公開亮相777X|date=2021-11-05|accessdate=2022-02-14|archive-date=2022-02-14|archive-url=https://web.archive.org/web/20220214154503/https://www.chinaerospace.com/article/961}}</ref><ref>{{cite web|url=https://www.ccaonline.cn/zhizao/694452.html|title=「光辉」战机、777X将首次亮相新加坡航展飞行表演|date=2022-02-14|accessdate=2022-02-14|archive-date=2022-02-14|archive-url=https://web.archive.org/web/20220214163100/https://www.ccaonline.cn/zhizao/694452.html}}</ref>。

2022年4月，波音表示777-9將不早於2025年服務<ref name="777x2025">{{Cite news|last=Gates|first=Dominic|date=2021-06-27|title=Boeing 777x delayed to 2025|work=AirwaysMag|url=https://airwaysmag.com/boeing-777x-delayed-2025/|access-date=April 23, 2022|archive-date=2022-06-25|archive-url=https://web.archive.org/web/20220625162317/https://airwaysmag.com/boeing-777x-delayed-2025/}}</ref><ref>{{Cite web|title=Wow: Boeing 777X Deliveries Delayed Until 2025|url=https://onemileatatime.com/news/boeing-777x-delay/|date=2022-04-28|language=en|access-date=2022-04-30|archive-date=2022-07-04|archive-url=https://web.archive.org/web/20220704172440/https://onemileatatime.com/news/boeing-777x-delay/}}</ref>。

2025年，777-9進行FAA適航認證飛行考核，預計年內取得FAA核發型式合格證書以及適航認證，但到2026年最後準備仍在進行中。<ref>{{Cite web |title=【即時新聞】波音777-9客機獲美國FAA認證里程碑，巨型客機即將展開關鍵測試 |url=https://cmnews.com.tw/article/newsyoudeservetoknow-c3e6b057-26ec-11f1-a779-96ca15e00246 |website=CMoney投資網誌 |access-date=2026-05-10}}</ref>

2027年，首架波音777-9預計交付予啟始客戶－[[漢莎航空]]，並開始載客服務。

客戶可選擇777-9以下艙門配置
*方案1-4對Type-A艙門（8個緊急出口）
*方案2-4對Type-A艙門+1對Type-C艙門（10個緊急出口），其中Type-C艙門設在第3對Type-A艙門後面9對窗戶與第4對Type-A艙門前面18對窗戶之間原本布局1的4對窗戶空間。

===777-10X（擬開發）===
波音777-10X機身將比777-9X長，約為80[[米 (单位)|米]]（263[[英尺]]），可比777-9X容納多四排座位，搭載450人。開發777-10X的目的是和[[空中客车A380|空中巴士A380]]競爭<ref>{{Cite web|title=The Boeing 777-10X - Will It Ever Be Built?|url=https://simpleflying.com/boeing-777-10/|language=en|access-date=2022-05-07|archive-date=2022-05-07|archive-url=https://web.archive.org/web/20220507101337/https://simpleflying.com/boeing-777-10/}}</ref>。目前，波音已與777和A380最大運營商——阿聯酋航空商談<ref>{{cite news|title=Boeing Mulls Stretching 777 to Knock Out Airbus A380|url=https://www.bloomberg.com/news/articles/2016-06-30/boeing-said-to-mull-stretching-777-to-knock-out-airbus-a380-jet|agency=Bloomberg|date=June 30, 2016|access-date=March 5, 2017|archive-date=April 7, 2017|archive-url=https://web.archive.org/web/20170407022446/https://www.bloomberg.com/news/articles/2016-06-30/boeing-said-to-mull-stretching-777-to-knock-out-airbus-a380-jet|url-status=live}}</ref>。波音證實，如果阿聯酋航空有興趣，延長777-9X至10X是可行的<ref>{{cite news|url=https://www.flightglobal.com/news/articles/farnborough-boeing-confirms-technical-feasibility-o-427165/|title=Boeing confirms technical feasibility of '777-10'|work=Flightglobal|date=July 10, 2016|author=Stephen Trimble|access-date=December 11, 2018|archive-date=September 2, 2019|archive-url=https://web.archive.org/web/20190902075001/https://www.flightglobal.com/news/articles/farnborough-boeing-confirms-technical-feasibility-o-427165/|url-status=live}}</ref>。A380已於2021年12月停產。

===BBJ 777X===
2018年12月，波音公佈將開發777X的[[波音公務機|公務機]]版本。BBJ 777X分為兩個型號，當中BBJ 777-8航程長達21,570公里，將取代[[空中客車A350 XWB#ACJ350|ACJ350]]成為全球航程最長的飛機；至於機身較長的BBJ 777-9，亦有20,370公里<ref>{{cite press release |url= https://boeing.mediaroom.com/2018-12-10-Boeing-Launches-Longest-Range-Business-Jet-Ever-with-BBJ-777X |title= Boeing Launches Longest-Range Business Jet Ever with BBJ 777X |date= December 10, 2018 |publisher= Boeing |access-date= 2020-11-01 |archive-date= 2021-03-08 |archive-url= https://web.archive.org/web/20210308154040/https://boeing.mediaroom.com/2018-12-10-Boeing-Launches-Longest-Range-Business-Jet-Ever-with-BBJ-777X |dead-url= no }}</ref>
。

===777-8F===
2017年，[[国际民用航空组织|國際民用航空組織]]公佈了新的環境保護要求，限制飛機的二氧化碳排放量，新標準適用於2028年起生產的飛機。<ref>{{cite web |title=ICAO Council adopts new CO2 emissions standard for aircraft |url=https://www.icao.int/newsroom/pages/icao-council-adopts-new-co2-emissions-standard-for-aircraft.aspx |website=ICAO |access-date=2022-02-17 |archive-date=2022-05-06 |archive-url=https://web.archive.org/web/20220506104129/https://www.icao.int/newsroom/pages/icao-council-adopts-new-co2-emissions-standard-for-aircraft.aspx }}</ref>由於現有貨機（主要是767F及777F）都不符合新要求，因此必須於2027年停產。2021年7月，主要競爭對手[[空中巴士]]發表以最新A350-1000為基礎的A350F貨機，計劃於2025年起交付。2022年1月31日，波音也正式發表777-8F，計劃於2027年起交付。由於777X的認證工作遲於原定計劃，加上國際民用航空組織的限期迫近，波音甚至把777-8客機的研發工作推遲{{fact}}，確保2028年不會出現無法交付貨機的情況。

==订单==

=== 订单历史 ===
2013年9月19日，汉莎航空成为首家选择777X的航空公司，订购了34架777-9客机，但订单后来改为20架和14架的选择权。<ref>{{Cite web |title=Lufthansa Switches Boeing 777 Orders to Options in Fleet Rethink |url=https://www.bloomberg.com/news/articles/2019-11-07/lufthansa-switches-boeing-777-orders-to-options-in-fleet-rethink |website=[bloomberg.com] |language=en |url-status=live}}</ref>

2022年1月，卡塔爾航空與波音就開發及訂購777X貨機進行談判，並預計將下訂最多50架<ref name="777XF" />。至同月31日，卡航正式與波音簽約，確定下訂34架777-8F，另附16架選擇權，成為777X貨機版本的啟始客戶<ref>{{cite web |title=Breaking: Qatar Airways Signs For Up To 100 Boeing 777X Freighters & 737 MAXs |url=https://simpleflying.com/qatar-signs-777xf-and-max/ |work=Simple Flying |date=2022-01-31 |archive-url=https://web.archive.org/web/20220606045246/https://simpleflying.com/qatar-signs-777xf-and-max/ |archive-date=2022-06-06 |accessdate=2022-02-01}}</ref>。

同年3月，[[埃塞俄比亞航空]]和波音簽訂備忘錄，準備下訂5架777-8F貨機，成為777X貨機的第二個用戶<ref>{{cite news |title=Boeing lands 777-8F commitment from Ethiopian |url=https://cargofacts.com/allposts/carriers/boeing-lands-777-8f-commitment-from-ethiopian/ |work=Cargo Facts |date=2022-03-04 |accessdate=2022-03-05 |archive-url=https://web.archive.org/web/20220305203106/https://cargofacts.com/allposts/carriers/boeing-lands-777-8f-commitment-from-ethiopian/ |archive-date=2022-03-05}}</ref>；随后在2022年5月，汉莎航空亦宣布订购8架波音777-8F货机<ref name="777_O_D_summ" />。

===訂單概要===
{| class="wikitable sortable" style="text-align:center; background-color:#fbf8db"
|+ '''波音777X訂單（在ASC 606会计准则调整前）'''
|-
! style="background-color:#cdf;"|首張訂單 <br />日期
! style="background-color:#cdf;"|國家或地区
! style="background-color:#cdf;"|客戶
! style="background-color:#cdf;" data-sort-type="number"|總數
|-
| 2013年11月7日
| [[德國]]
| [[漢莎航空]]
|style="background:#d0f0c0;"| 27（20：-9、7：-8F）<ref name=777_O_D_summ>{{cite web |url=http://active.boeing.com/commercial/orders/displaystandardreport.cfm?cboCurrentModel=777&optReportType=AllModels&cboAllModel=777&ViewReportF=View+Report |title=777 Model Orders and Deliveries summary |work=Boeing |date=September 2014 |accessdate=October 23, 2014 |archive-date=2013-08-23 |archive-url=https://www.webcitation.org/6J5PxuzDT?url=http://active.boeing.com/commercial/orders/displaystandardreport.cfm?cboCurrentModel=777 |dead-url=yes }}</ref>
|-
| 2013年11月17日
| [[阿拉伯联合酋长国|阿联酋]]
| [[阿提哈德航空]]
|style="background:#d0f0c0;"| 9（-9）<ref>{{cite news |title=Boeing, Etihad Airways Kick Off Dubai Airshow with 777X, 787-10 Orders - Nov 17, 2013 |url=https://boeing.mediaroom.com/2013-11-17-Boeing-Etihad-Airways-Kick-Off-Dubai-Airshow-with-777X-787-10-Orders |accessdate=2019-12-25 |work=MediaRoom |date=2013-11-17 |language=en |archive-date=2019-10-14 |archive-url=https://web.archive.org/web/20191014233837/https://boeing.mediaroom.com/2013-11-17-Boeing-Etihad-Airways-Kick-Off-Dubai-Airshow-with-777X-787-10-Orders |dead-url=no }}</ref>
|-
| 2013年12月20日
| [[香港]]
| [[國泰航空]]
|style="background:#d0f0c0;"| 35（35：-9）<ref name=777_O_D_summ/><ref>{{Cite web |url=http://boeing.mediaroom.com/2013-12-20-Boeing-and-Cathay-Pacific-Airways-Announce-Order-for-21-777-9Xs |title=存档副本 |access-date=2014-11-07 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304003727/http://boeing.mediaroom.com/2013-12-20-Boeing-and-Cathay-Pacific-Airways-Announce-Order-for-21-777-9Xs |dead-url=no }}</ref><ref>{{Cite web|date=2023-05-30|title=Cathay Pacific eyes Boeing 777X-8F order: report - AeroTime|url=https://www.aerotime.aero/articles/cathay-pacific-to-add-boeing-777x-8fs-to-fleet-with-potential-new-order-report|access-date=2023-06-13|language=en-US|archive-date=2023-06-25|archive-url=https://web.archive.org/web/20230625050813/https://www.aerotime.aero/articles/cathay-pacific-to-add-boeing-777x-8fs-to-fleet-with-potential-new-order-report|dead-url=no}}</ref>
|-
| 2014年7月9日
| [[阿拉伯联合酋长国|阿联酋]]
| [[阿联酋航空|阿聯酋航空]]
|style="background:#d0f0c0;"| 205（170：-9、35：-8）<ref name=777_O_D_summ/><ref>{{Cite web |url=http://boeing.mediaroom.com/2014-07-09-Boeing-Emirates-Finalize-Order-for-150-777Xs |title=存档副本 |access-date=2014-11-07 |archive-date=2016-12-26 |archive-url=https://web.archive.org/web/20161226012135/http://boeing.mediaroom.com/2014-07-09-Boeing-Emirates-Finalize-Order-for-150-777Xs/ |dead-url=no }}</ref><ref>{{Cite web |url=https://onemileatatime.com/emirates-787-9/ |title=存档副本 |access-date=2019-12-26 |archive-date=2021-02-18 |archive-url=https://web.archive.org/web/20210218020327/https://onemileatatime.com/emirates-787-9/ |dead-url=no }}</ref>
|-
| 2014年7月16日
| [[卡塔尔]]
| [[卡塔爾航空]]
|style="background:#d0f0c0;"| 最多110（50：-9、10：-8、最多50：-8F）<ref name=777_O_D_summ/><ref>{{Cite web |url=http://boeing.mediaroom.com/2014-07-16-Boeing-Qatar-Airways-Finalize-Order-for-50-777Xs |title=存档副本 |access-date=2014-11-07 |archive-date=2016-10-19 |archive-url=https://web.archive.org/web/20161019220932/http://boeing.mediaroom.com/2014-07-16-Boeing-Qatar-Airways-Finalize-Order-for-50-777Xs |dead-url=no }}</ref><ref name=777XF>{{cite news|url=https://www.airway1.com/qatar-airways-may-announce-boeing-777xf-order-next-week/|title=Qatar Airways may announce Boeing 777XF order next week|work=Air Data News|date=2022-01-26|accessdate=2022-01-28|archive-date=2022-01-30|archive-url=https://web.archive.org/web/20220130122518/https://www.airway1.com/qatar-airways-may-announce-boeing-777xf-order-next-week/}}</ref>
|-
| 2014年7月31日
| [[日本]]
| [[全日空航空]]
|style="background:#d0f0c0;"| 20<ref name=777_O_D_summ/><ref name="#1"/>（18：-9、2：-8F）
|-
|2015年6月4日
| -
|未透露客户身份
|style="background:#d0f0c0;"| 10（-9）<ref name="#2">{{cite web |title=777 Model Summary |url=http://active.boeing.com/commercial/orders/displaystandardreport.cfm?cboCurrentModel=777&optReportType=AllModels&cboAllModel=777&ViewReportF=View+Report |website=Boeing |accessdate=2020-01-31 |language=en |archive-date=2013-08-23 |archive-url=https://www.webcitation.org/6J5PxuzDT?url=http://active.boeing.com/commercial/orders/displaystandardreport.cfm?cboCurrentModel=777 |dead-url=yes }}</ref>
|-
|2017年6月19日
|[[新加坡]]
|[[新加坡航空]]
|style="background:#d0f0c0;"| 31（-9）<ref>{{cite web |title=Singapore Airlines Commitment to purchase 20 777-9 and 19 787-10 Dreamliners |url=https://www.boeing.com/commercial/customers/singapore-airlines/singapore-dreamliner-order.page |website=Boeing |accessdate=2019-12-25 |language=en |archive-date=2021-01-26 |archive-url=https://web.archive.org/web/20210126094622/https://www.boeing.com/commercial/customers/singapore-airlines/singapore-dreamliner-order.page |dead-url=no }}</ref>
|-
|2019年2月28日
|[[英國]]
|[[英國航空]]
|style="background:#d0f0c0;"| 18（-9）<ref>{{cite web |title=ブリティッシュエア、777Xを最大42機導入へ 747後継 |url=https://www.aviationwire.jp/archives/167421 |website=Aviation Wire |accessdate=2019-12-25 |language=ja |archive-date=2020-10-30 |archive-url=https://web.archive.org/web/20201030110128/https://www.aviationwire.jp/archives/167421 |dead-url=no }}</ref>
|-
|2022年7月21日
|[[盧森堡]]
|[[盧森堡國際貨運航空]]
|style="background:#d0f0c0;"| 10（-8F）
|-
|2022年11月10日
|[[阿塞拜疆]]
|丝绸之路西部航空
|2
|-
|2023年2月14日
|[[印度]]
|[[印度航空]]
|style="background:#d0f0c0;"| 10（-9）
|-
|2023年7月22日
|[[韓國]]
|[[大韓航空]]
| style="background:#d0f0c0;" | 20（-9）
|-
|2024年3月5日
|[[埃塞俄比亞]]
|[[埃塞俄比亞航空]]
|style="background:#d0f0c0;"| 8
|-
|2024年12月19日
|[[中華民國]]
|[[中華航空]]
|style="background:#d0f0c0;"| 23（15：-9、8：-8F）<ref>{{Cite web|url=https://tw.stock.yahoo.com/news/%E5%85%AC%E5%91%8A-%E8%8F%AF%E8%88%AA%E8%B3%BC%E8%B2%B75%E6%9E%B6a350-1000%E5%AE%A2%E6%A9%9F-5%E6%9E%B6777-9%E5%AE%A2%E6%A9%9F-081554526.html|title=【公告】華航購買5架A350-1000客機、5架777-9客機、4架777-8F貨機及2架777F貨機之相關訊息|date=2025-11-26|language=zh-tw|access-date=2025-11-27|url-status=live|author=中央社|website=yahoo! 股市}}</ref>
|-
| colspan="3" | 總計 || 555<ref name="#2"/>
|}

=== 波音777X型號訂單與交付 ===
{| class="wikitable" style="margin:1em 1em 1em 300; border:1px #aaa solid; text-align:right;"
|+ 波音777X逐年訂單與交付
|- style="font-weight:bold; padding:0.4em;text-align:center;"
!style="border-left:solid 2px black;border-top:solid 2px black;border-right:solid 2px black;border-bottom:solid 2px black" colspan="2" |
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2013
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2014
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2015
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2016
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2017
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2018
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2019
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2020
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2021
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2022
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2023
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2024
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 2025
!style="border-left:solid 2px black;border-top:solid 2px black;border-right:solid 2px black;border-bottom:solid 2px black"|Total
|- 
! style="border-left:solid 2px black;text-align:left;border-bottom:dashed 2px black;" | 訂購
! style="text-align:left;border-right:solid 2px black;border-left:dashed 2px black;border-bottom:dashed 2px black;" |總訂購數量 
|style="border-bottom:dashed 2px black;"|66
|style="border-bottom:dashed 2px black;"|220
|style="border-bottom:dashed 2px black;"|10
|style="border-bottom:dashed 2px black;"|0
|style="border-bottom:dashed 2px black;"|20
|style="border-bottom:dashed 2px black;"|0
|style="border-bottom:dashed 2px black;"|-17
|style="border-bottom:dashed 2px black;"|0
|style="border-bottom:dashed 2px black;"|11
|style="border-bottom:dashed 2px black;"|33
|style="border-bottom:dashed 2px black;"|100
|style="border-bottom:dashed 2px black;"|28
| style="border-bottom:dashed 2px black;" |70
! style="border-bottom:dashed 2px black;border-right:solid 2px black;border-left:solid 2px black"| 541
|- 
! rowspan="4" ! style="border-left:solid 2px black;border-bottom:solid 2px black ; text-align:left;" |交付
! style="text-align:left;border-right:solid 2px black;border-left:dashed 2px black;" |B777-8
|&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;
|&ndash;
|&ndash;
! style="border-right:solid 2px black;border-left:solid 2px black"| 0
|-
! style="text-align:left;border-right:solid 2px black;border-left:dashed 2px black;" |B777-9
|&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;
|&ndash; ||&ndash;
! style="border-right:solid 2px black;border-left:solid 2px black"| 0
|-
!style="text-align:left; border-right:solid 2px black;border-left:dashed 2px black;" |B777-8F
|&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;||&ndash;
|&ndash;
| &ndash; |&ndash;
! style="border-right:solid 2px black;border-left:solid 2px black"| 0
|-
! style="border-right:solid 2px black; border-bottom:solid 2px black;border-top:solid 2px black;border-left:dashed 2px black ;text-align:left;" |總交付數量
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0 
! style="border-top:solid 2px black;border-bottom:solid 2px black"| 0 
! style="border-top:solid 2px black;border-bottom:solid 2px black" | 0
!style="border-left:solid 2px black;border-top:solid 2px black;border-right:solid 2px black;border-bottom:solid 2px black"|0
|}
<small>''{{As of|2025|5}}''</small>

=== 訂單與交付情況 ===<!-------------------------------------------------------------->
<!-- GRAPH OF ORDERS AND DELIVERIES, CUMULATIVE------------------>
<!-------------------------------------------------------------->
<timeline>
ImageSize  = width:auto height:250 barincrement:45
PlotArea   = left:35 bottom:15 top:10 right:18
AlignBars  = justify
DateFormat = yyyy
Period     = from:0 till:600
TimeAxis   = orientation:vertical
ScaleMajor = unit:year increment:100 start:0
ScaleMinor = unit:year increment:20 start:0


PlotData=
  color:skyblue width:45
  bar:2013 from:start till:66 text:66 align:center
  bar:2014 from:start  till:286 text:286 align:center
  bar:2015 from:start  till:296 text:296 align:center
  bar:2016 from:start  till:296 text:296 align:center
  bar:2017 from:start  till:316 text:316 align:center 
  bar:2018 from:start  till:316 text:316 align:center
  bar:2019 from:start  till:299 text:299 align:center
  bar:2020 from:start  till:299 text:299 align:center
  bar:2021 from:start  till:310 text:310 align:center
  bar:2022 from:start  till:343 text:343 align:center
  bar:2023 from:start  till:443 text:443 align:center
  bar:2024 from:start  till:471 text:471 align:center
  bar:2025 from:start  till:541 text:541 align:center
  color:green width:45
  bar:2024 from:start till:0 text:0 align:center
</timeline>
: {{Legend inline|skyblue|訂單}} 
: {{Legend inline|green|交付}}
: {{As of|2025|5|lc=y}}

==規格==
{| class="wikitable" style="text-align:center; font-size:96%;"
|+ 規格
|-
! scope="row" | 型號
!  777-8<ref name=norris2013/><ref name=AspireAviation_All_Fronts>{{cite web |url= http://www.aspireaviation.com/2013/05/27/boeing-lost-grounds-all-fronts/ |title= Boeing To Make Up Lost Grounds On All Fronts |work= Aspire Aviation |accessdate= June 20, 2013 |archive-date= 2018-02-26 |archive-url= https://web.archive.org/web/20180226234346/http://www.aspireaviation.com/2013/05/27/boeing-lost-grounds-all-fronts/ |dead-url= no }}</ref><ref name=AspireAviation_mini_jumbo_war>{{cite web |url=http://www.aspireaviation.com/2013/03/28/boeing-777x-to-spark-mini-jumbo-war/ |title=Boeing 777X To Spark Mini-Jumbo War |work=Aspire Aviation |accessdate=June 20, 2013 |archive-date=2017-09-26 |archive-url=https://web.archive.org/web/20170926160054/http://www.aspireaviation.com/2013/03/28/boeing-777x-to-spark-mini-jumbo-war/ |dead-url=no }}</ref><ref name=AspireAviation_game_of_thrones>{{cite web |url=http://www.aspireaviation.com/2014/07/11/airbus-boeing-widebody-game-of-thrones/ |title=Airbus, Boeing in game of thrones for widebody dominance |work=Aspire Aviation |accessdate=October 16, 2014 |archive-date=2016-04-21 |archive-url=https://web.archive.org/web/20160421005750/http://www.aspireaviation.com/2014/07/11/airbus-boeing-widebody-game-of-thrones/ |dead-url=no }}</ref> !! scope="col" | 777-9<ref name=norris2013/><ref name=AspireAviation_All_Fronts/><ref name=AspireAviation_mini_jumbo_war/><ref name=AspireAviation_game_of_thrones/> !! scope="col" | 777-8F<ref>{{cite web|url=https://www.boeing.com/commercial/freighters/#/777-8f-highlight/characteristics/777-8f/|title=777-8F Characteristics|work=Boeing Company|date=2022-01-31|accessdate=2022-02-01|archive-date=2022-05-22|archive-url=https://web.archive.org/web/20220522004118/https://www.boeing.com/commercial/freighters/#/777-8f-highlight/characteristics/777-8f/}}</ref><ref>{{cite web|url=https://www.boeing.com/commercial/freighters/#/777-8f-highlight/777-8f/cross-sections/|title=777-8F Cross section|work=Boeing Company|date=2022-01-31|accessdate=2022-02-01|archive-date=2022-05-22|archive-url=https://web.archive.org/web/20220522004118/https://www.boeing.com/commercial/freighters/#/777-8f-highlight/777-8f/cross-sections/}}</ref><ref>{{cite web|url=https://www.boeing.com/commercial/freighters/#/777-8f-highlight/777-8f/cargo-arrangements/|title=777-8F Cargo Arrangements|work=Boeing Company|date=2022-01-31|accessdate=2022-02-01|archive-date=2022-05-22|archive-url=https://web.archive.org/web/20220522004118/https://www.boeing.com/commercial/freighters/#/777-8f-highlight/777-8f/cargo-arrangements/}}</ref>
|-
! scope="row" | 機師數
| colspan="3" | 2
|-
! scope="row" | 座位數<br/> 
| colspan="1" | 395 (2級)|| 426 (2級)<ref name="B777X">{{Cite web |url=https://www.boeing.com/commercial/777x/#/technical-specs |title=Boeing 777X |access-date=2021-11-15 |archive-date=2022-11-12 |archive-url=https://web.archive.org/web/20221112001230/https://www.boeing.com/commercial/777x/#/technical-specs |dead-url=no }}</ref>||{{N/A}}
|-
! scope="row" | 長度
| colspan="1" | {{convert|232|ft|6|in|m|abbr=on|sigfig=3}}|| {{convert|251|ft|9|in|m|abbr=on|sigfig=3}} || {{convert|232|ft|6|in|m|abbr=on|sigfig=3}}
|-
! scope="row" | 翼展
| colspan="3" | 展開後:{{convert|235|ft|5|in|m|abbr=on|sigfig=3}}<ref>{{cite web|url=http://aviationweek.com/commercial-aviation/777x-configuration-changes-revealed|title=777X Configuration Changes Revealed|work=Aviation Week|last=Norris|first=Guy|date=2014-06-09|accessdate=2014-06-10|archive-date=2019-01-05|archive-url=https://web.archive.org/web/20190105061208/http://aviationweek.com/commercial-aviation/777x-configuration-changes-revealed|dead-url=no}}</ref> <br> 展開前: {{convert|212|ft|9|in|m|abbr=on|sigfig=3}}
|-
! scope="row" | 機翼後掠角度
| colspan="3" |9.96
|-
! scope="row" | 尾翼高度
| colspan="3" | {{convert|64|ft|6|in|m|abbr=on|sigfig=3}}<ref>{{cite web|url=http://www.icao.int/SAM/Documents/OPS-ACFT-PCP-13/4_COSTA_777X-Tech%20Data%20July.pdf|title=777X Airport Compatibility|date=July 2013|accessdate=November 18, 2013|archive-date=2016-03-14|archive-url=https://web.archive.org/web/20160314023811/http://icao.int/sam/documents/ops-acft-pcp-13/4_costa_777x-tech|dead-url=no}}</ref>
|-
! scope="row" | 機艙內寬度
| colspan="3" | {{convert|19|ft|7|in|m|abbr=on|sigfig=3}}<ref name="www.aspireaviation.com" />
|-
! scope="row" | 座位寬度
| colspan="2" | {{convert|18|in|cm|abbr=on|sigfig=3}} （一排10個座位）<ref name="Skift.com"/> ||{{N/A}}
|-
! scope="row" | 機體寬度
| colspan="3" | {{convert|20|ft|4|in|m|abbr=on|sigfig=3}}
|-
! scope="row" | 載貨空間
| colspan="1" | 40× [[集裝器|LD3]] || 48× [[集裝器|LD3]] || 44× 貨盤
|-
! scope="row" | 空重
| colspan="1" {{TBA}}|| 400,000磅（181,400公斤）||{{TBA}}
|-
! scope="row" | 最大降落重量
| colspan="1" {{TBA}} || 557,000&nbsp;lb <br/>(252,651&nbsp;kg)||{{TBA}}
|-
! scope="row" | 最大起飛重量
| 805,000 lb (365,150 kg) || 775,000 lb (351,550 kg)||{{TBA}}
|-
! scope="row" | 巡航速率
| colspan="2" | M0.85 ||{{TBA}}
|-
! scope="row" | 最高巡航速率
| colspan="3" {{TBA}}
|-
! scope="row" | 最大航程<br />
| 8,745&nbsp;nmi<br/>(16,190&nbsp;km) || 7,285&nbsp;nmi<br/>(13,500&nbsp;km)<ref name="B777X" />||4,410&nbsp;nmi<br>(8,168&nbsp;km)
|-
! scope="row" | 起飛所需跑道長度（於最大起飛重量時）
| colspan="3" {{TBA}}
|-
! scope="row" | 燃油容量
| colspan="3" | 350,410 lb (158,940 kg),52,300 US gal (197,977 L)
|-
! scope="row" | 最大飛行高度
| colspan="3" | 43,100&nbsp;ft (13,140&nbsp;m)
|-
! scope="row" | 發動機（×2）
| [[通用电气GE9X发动机|GE9X-93B1A]] || GE9X-105B1A || {{TBA}}
|-
! scope="row" | 發動機推力（×2）
| colspan="3" | 134,300&nbsp;lbf (597&nbsp;kN)<ref name="www.aspireaviation.com" />
|}
'''註:''' 規格有可能會更動。
{{clear}}

==相關條目==
* [[波音777]]

===相關機型===
* [[空中客车A330neo]]
* [[空中客车A350 XWB|空中客车A350]]
* [[中国商飞C939]]

===主要競爭對手===
* [[空中客车A350 XWB|空中巴士A350-1000]]

==註解==
{{notefoot}}
==参考文獻==
{{reflist|30em}}

==外部連結==
{{Commonscat|Boeing 777X}}
* [http://www.newairplane.com/777x/ 777X official webpage on newairplane.com] {{Wayback|url=http://www.newairplane.com/777x/ |date=20150401070656 }}	
* [https://web.archive.org/web/20141011084204/http://www.abcdlist.nl/777x/777x.html Boeing 777X orders]
{{Boeing7x7|[[波音777X]]}}
{{Boeing airliners}}
{{aviation lists}}
{{大型飛機}}
[[Category:波音777| ]]
[[Category:波音飞机]]
[[Category:干线客机]]
[[Category:貨機]]
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[[Category:雙發噴射機]]
[[Category:2020年首飞的飞行器]]