Editing (section) Boeing 747 0 You are not logged in. The rich text editor does not work with JavaScript switched off. Please either enable it in your browser options, or visit your preferences to switch to the old MediaWiki editor <h4>747X and 747X Stretch</h4> <p data-rte-fromparser="true">As Airbus progressed with its <a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22A3XX%22%2C%22link%22%3A%22Airbus%20A380%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5BAirbus%20A380%7CA3XX%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="/wiki/Airbus_A380" title="Airbus A380">A3XX</a> study, Boeing in 2000 offered the market a 747 derivative as an alternative. This was a more modest proposal than the previous -500X and -600X that would retain the 747's overall wing design and add a segment at the root, increasing the span to <span class="placeholder placeholder-double-brackets" data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22double-brackets%22%2C%22wikitext%22%3A%22%7B%7Bconvert%7C229%7Cft%7Cm%7Csigfig%3D3%7Cabbr%3Don%7D%7D%22%2C%22lineStart%22%3A%22%22%2C%22title%22%3A%22convert%22%2C%22placeholder%22%3A1%7D" contenteditable="false">​229 ft (m {{{4}}})​</span>.<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%20name%3D%5C%22boe_747X%5C%22%3E%5Bhttp%3A%5C%2F%5C%2Fwww.boeing.com%5C%2Fnews%5C%2Freleases%5C%2F2000%5C%2Fnews_release_000121a.html%20%5C%22Boeing%20747%20Celebrates%2030%20Years%20In%20Service%5C%22%5D%2C%20The%20Boeing%20Company%2C%202%20September%201996.%20%20Retrieved%3A%2017%20December%202007.%3C%5C%2Fref%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-boe_747X_0-0" class="reference" data-rte-attribs=" id=cite_ref-boe_747X_0-0 class=reference"><a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255B%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000001-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E1%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255D%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000002-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E%22%2C%22link%22%3A%22%23cite_note-boe_747X-0%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5B%23cite_note-boe_747X-0%7C%3Cext%20_rte_wikitextidx%3D%5C%2215%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5B%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E1%3Cext%20_rte_wikitextidx%3D%5C%2216%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5D%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-boe_747X-0"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>1<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> Power would have been supplied by either the Engine Alliance GP7172 or the Rolls-Royce Trent 600, which were also proposed for the <a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22767-400ERX%22%2C%22link%22%3A%22Boeing%20767%23767-400ER%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5BBoeing%20767%23767-400ER%7C767-400ERX%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="/wiki/Boeing_767#767-400ER" title="Boeing 767">767-400ERX</a>.<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%3E%5Bhttp%3A%5C%2F%5C%2Fwww.boeing.com%5C%2Fnews%5C%2Freleases%5C%2F2000%5C%2Fnews_release_000913a.html%20%5C%22Boeing%20Commits%20To%20Produce%20New%20Longer-Range%20767-400ER%5C%22%5D%2C%20The%20Boeing%20Company%2C%2013%20September%202000.%20Retrieved%3A%2017%20December%202007.%3C%5C%2Fref%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-1" class="reference" data-rte-attribs=" id=cite_ref-1 class=reference"><a 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data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-1"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>2<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> A new flight deck based on the 777's would be used. The 747X aircraft was to carry 430 passengers over ranges of up to 8,700<span data-rte-entity="nbsp"> </span>nmi (10,000<span data-rte-entity="nbsp"> </span>mi, 16,100<span data-rte-entity="nbsp"> </span>km). The 747X Stretch would be extended to <span class="placeholder placeholder-double-brackets" data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22double-brackets%22%2C%22wikitext%22%3A%22%7B%7Bconvert%7C263%7Cft%7Cm%7Csigfig%3D3%7Cabbr%3Don%7D%7D%22%2C%22lineStart%22%3A%22%22%2C%22title%22%3A%22convert%22%2C%22placeholder%22%3A1%7D" contenteditable="false">​263 ft (m {{{4}}})​</span> long, allowing it to carry 500 passengers over ranges of up to 7,800<span data-rte-entity="nbsp"> </span>nmi (9,000<span data-rte-entity="nbsp"> </span>mi, 14,500<span data-rte-entity="nbsp"> </span>km).<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%20name%3D%5C%22boe_747X%5C%22%20%5C%2F%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-boe_747X_0-1" class="reference" data-rte-attribs=" id=cite_ref-boe_747X_0-1 class=reference"><a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255B%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000007-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E1%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255D%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000008-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E%22%2C%22link%22%3A%22%23cite_note-boe_747X-0%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5B%23cite_note-boe_747X-0%7C%3Cext%20_rte_wikitextidx%3D%5C%2229%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5B%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E1%3Cext%20_rte_wikitextidx%3D%5C%2230%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5D%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-boe_747X-0"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>1<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> Both would feature an interior based on the 777's signature architecture.<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%3E%5Bhttp%3A%5C%2F%5C%2Fwww.boeing.com%5C%2Fnews%5C%2Freleases%5C%2F2000%5C%2Fnews_release_000629b.html%20%5C%22Customer%20Symposium%20Highlights%20Future%20Boeing%20747%20Models%5C%22%5D%2C%20The%20Boeing%20Company%2C%2029%20June%202000.%20Retrieved%3A%2017%20December%202007.%3C%5C%2Fref%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-2" class="reference" data-rte-attribs=" id=cite_ref-2 class=reference"><a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255B%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-0000000A-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E3%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255D%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-0000000B-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E%22%2C%22link%22%3A%22%23cite_note-2%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5B%23cite_note-2%7C%3Cext%20_rte_wikitextidx%3D%5C%2235%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5B%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E3%3Cext%20_rte_wikitextidx%3D%5C%2236%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5D%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-2"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>3<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> Freighter versions of the 747X and 747X Stretch were also studied.<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%3EMorris%2C%20J.%20%5Bhttp%3A%5C%2F%5C%2Fwww.aviationnow.com%5C%2Fshownews%5C%2F00farn1%5C%2Ftopsto31.htm%20%5C%22Boeing%20In%20No%20Hurry%20to%20Launch%20747X%5C%22%5D%2C%20%27%27Aviation%20Week%27%27%2C%2024%20July%202000.%20%20Retrieved%3A%2018%20December%202007.%3C%5C%2Fref%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-3" class="reference" data-rte-attribs=" id=cite_ref-3 class=reference"><a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255B%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-0000000D-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E4%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255D%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-0000000E-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E%22%2C%22link%22%3A%22%23cite_note-3%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5B%23cite_note-3%7C%3Cext%20_rte_wikitextidx%3D%5C%2241%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5B%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E4%3Cext%20_rte_wikitextidx%3D%5C%2242%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5D%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-3"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>4<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> </p><p data-rte-fromparser="true" data-rte-empty-lines-before="1">Like its predecessor, the 747X familyXXX in March 2001, when Boeing announced the <a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22Sonic%20Cruiser%22%2C%22link%22%3A%22Boeing%20Sonic%20Cruiser%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5BBoeing%20Sonic%20Cruiser%7CSonic%20Cruiser%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="/wiki/Boeing_Sonic_Cruiser" title="Boeing Sonic Cruiser">Sonic Cruiser</a> concept.<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%20name%3D%5C%22shelv_747X%5C%22%20%5C%2F%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-shelv_747X_4-0" class="reference" data-rte-attribs=" id=cite_ref-shelv_747X_4-0 class=reference"><a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255B%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000010-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E5%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255D%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000011-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E%22%2C%22link%22%3A%22%23cite_note-shelv_747X-4%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5B%23cite_note-shelv_747X-4%7C%3Cext%20_rte_wikitextidx%3D%5C%2247%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5B%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E5%3Cext%20_rte_wikitextidx%3D%5C%2248%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5D%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-shelv_747X-4"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>5<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> Though the 747X design was less costly than the 747-500X and -600X, it was criticized for not offering a sufficient advance from the existing 747-400. The 747X did not make it beyond the drawing board, but the 747-400X being developed concurrently moved into production to become the <a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22747-400ER%22%2C%22link%22%3A%22Boeing%20747-400%23747-400ER%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5BBoeing%20747-400%23747-400ER%7C747-400ER%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="/wiki/Boeing_747-400#747-400ER" title="Boeing 747-400">747-400ER</a>.<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cref%3E%5Bhttp%3A%5C%2F%5C%2Fwww.boeing.com%5C%2Fnews%5C%2Freleases%5C%2F2000%5C%2Fnews_release_001128c.html%20%5C%22Boeing%20Launches%20New%2C%20Longer-Range%20747-400%5C%22%5D%2C%20The%20Boeing%20Company.%20Retrieved%3A%2017%20December%202007.%3C%5C%2Fref%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22ref%22%7D" class="placeholder placeholder-ext" contenteditable="false"><sup data-rte-washtml="1" id="cite_ref-5" class="reference" data-rte-attribs=" id=cite_ref-5 class=reference"><a data-rte-meta="%7B%22type%22%3A%22internal%22%2C%22text%22%3A%22%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255B%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000013-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E6%3Cspan%20data-rte-instance%3D%5C%22777-18586804165f2be53ba124b%5C%22%20data-rte-meta%3D%5C%22%257B%2522type%2522%253A%2522ext%2522%252C%2522wikitext%2522%253A%2522%253Cnowiki%253E%255D%253C%255C%252Fnowiki%253E%2522%252C%2522lineStart%2522%253A%2522%2522%252C%2522placeholder%2522%253A1%252C%2522extName%2522%253A%2522nowiki%2522%257D%5C%22%20class%3D%5C%22placeholder%20placeholder-ext%5C%22%20contenteditable%3D%5C%22false%5C%22%3E%7F%27%5C%22%60UNIQ5b047a963c3f38e8-nowiki-00000014-QINU%60%5C%22%27%7F%26%23x0200B%3B%3C%5C%2Fspan%3E%22%2C%22link%22%3A%22%23cite_note-5%22%2C%22wasblank%22%3Afalse%2C%22noforce%22%3Atrue%2C%22wikitext%22%3A%22%5B%5B%23cite_note-5%7C%3Cext%20_rte_wikitextidx%3D%5C%2253%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5B%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E6%3Cext%20_rte_wikitextidx%3D%5C%2254%5C%22%3E%3Cname%3Enowiki%3C%5C%2Fname%3E%3Cattr%3E%3C%5C%2Fattr%3E%3Cinner%3E%5D%3C%5C%2Finner%3E%3Cclose%3E%3C%5C%2Fnowiki%3E%3C%5C%2Fclose%3E%3C%5C%2Fext%3E%5D%5D%22%7D" data-rte-instance="777-18586804165f2be53ba124b" href="#cite_note-5"><span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5B%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">[​</span>6<span data-rte-instance="777-18586804165f2be53ba124b" data-rte-meta="%7B%22type%22%3A%22ext%22%2C%22wikitext%22%3A%22%3Cnowiki%3E%5D%3C%5C%2Fnowiki%3E%22%2C%22lineStart%22%3A%22%22%2C%22placeholder%22%3A1%2C%22extName%22%3A%22nowiki%22%7D" class="placeholder placeholder-ext" contenteditable="false">]​</span></a></sup>​</span> Then the other models' feature (777 wing design) was used on the 747-8. </p> <br /><strong data-rte-washtml="1" class="error" data-rte-attribs=" class=error">Cite error: <code data-rte-washtml="1"><ref></code> tags exist, but no <code data-rte-washtml="1"><references/></code> tag was found</strong><p /> <!-- Saved in parser cache with key aircraft:rte-parser-cache:1759 --> Loading editor Below are some commonly used wiki markup codes. 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