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class="mw-page-title-main">Douglas XB-19</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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href="https://de.wikipedia.org/wiki/Douglas_XB-19" title="Douglas XB-19 – German" lang="de" hreflang="de" data-title="Douglas XB-19" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Douglas_XB-19" title="Douglas XB-19 – Spanish" lang="es" hreflang="es" data-title="Douglas XB-19" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AF%D8%A7%DA%AF%D9%84%D8%A7%D8%B3_%D8%A7%DB%8C%DA%A9%D8%B3%E2%80%8C%D8%A8%DB%8C-%DB%B1%DB%B9" title="داگلاس ایکس‌بی-۱۹ – Persian" lang="fa" hreflang="fa" data-title="داگلاس ایکس‌بی-۱۹" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Douglas_XB-19" title="Douglas XB-19 – French" lang="fr" hreflang="fr" data-title="Douglas XB-19" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Douglas_XB-19" title="Douglas XB-19 – Indonesian" lang="id" hreflang="id" data-title="Douglas XB-19" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Douglas_XB-19_Hemisphere" title="Douglas XB-19 Hemisphere – Italian" lang="it" hreflang="it" data-title="Douglas XB-19 Hemisphere" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/XB-19_(%E8%88%AA%E7%A9%BA%E6%A9%9F)" title="XB-19 (航空機) – Japanese" lang="ja" hreflang="ja" data-title="XB-19 (航空機)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Douglas_XB-19" title="Douglas XB-19 – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Douglas XB-19" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Douglas_XB-19" title="Douglas XB-19 – Polish" lang="pl" hreflang="pl" data-title="Douglas XB-19" data-language-autonym="Polski" 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</div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">American bomber prototype</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output 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.infobox-header{border-top:1px solid #a2a9b1;border-bottom:1px solid #a2a9b1;line-height:23px;background-color:#eee}.mw-parser-output .ib-aircraft-caption{padding:0.3em 0 0 0}.mw-parser-output .ib-aircraft-caption-left .infobox-full-data,.mw-parser-output .ib-aircraft-caption-left .infobox-data,.mw-parser-output .ib-aircraft-caption-left .infobox-label{text-align:left}.mw-parser-output .ib-aircraft .mergedbottomrow .infobox-full-data,.mw-parser-output .ib-aircraft .mergedbottomrow .infobox-data,.mw-parser-output .ib-aircraft .mergedbottomrow .infobox-label{border-bottom:1px solid #a2a9b1}@media(min-width:720px){.mw-parser-output .ib-aircraft .infobox-label{width:30%;padding-right:3px}.mw-parser-output .ib-aircraft .infobox-data{width:50%}}</style><table class="infobox ib-aircraft vcard"><tbody><tr><th colspan="2" class="infobox-above">XB-19</th></tr><tr><td colspan="2" class="infobox-full-data"><span typeof="mw:File"><a href="/wiki/File:XB-19_on_ground_(cropped).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/XB-19_on_ground_%28cropped%29.jpg/300px-XB-19_on_ground_%28cropped%29.jpg" decoding="async" width="300" height="142" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/XB-19_on_ground_%28cropped%29.jpg/450px-XB-19_on_ground_%28cropped%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/c/c6/XB-19_on_ground_%28cropped%29.jpg 2x" data-file-width="600" data-file-height="284" /></a></span></td></tr><tr><th colspan="2" class="infobox-header">General information</th></tr><tr><th scope="row" class="infobox-label">Type</th><td class="infobox-data"><a href="/wiki/Heavy_bomber" title="Heavy bomber">Heavy bomber</a></td></tr><tr><th scope="row" class="infobox-label">National origin</th><td class="infobox-data">United States</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Aerospace_manufacturer" title="Aerospace manufacturer">Manufacturer</a></th><td class="infobox-data"><a href="/wiki/Douglas_Aircraft_Company" title="Douglas Aircraft Company">Douglas Aircraft Company</a></td></tr><tr><th scope="row" class="infobox-label">Status</th><td class="infobox-data">Scrapped</td></tr><tr><th scope="row" class="infobox-label">Primary user</th><td class="infobox-data"><a href="/wiki/United_States_Army_Air_Corps" title="United States Army Air Corps">United States Army Air Corps</a></td></tr><tr><th scope="row" class="infobox-label">Number built</th><td class="infobox-data">1</td></tr><tr><th colspan="2" class="infobox-header">History</th></tr><tr><th scope="row" class="infobox-label">First flight</th><td class="infobox-data">27 June 1941</td></tr><tr><th scope="row" class="infobox-label">Retired</th><td class="infobox-data">17 August 1946</td></tr></tbody></table> <p>The <b>Douglas XB-19</b> was a four-engined, piston-driven <a href="/wiki/Heavy_bomber" title="Heavy bomber">heavy bomber</a> produced by the <a href="/wiki/Douglas_Aircraft_Company" title="Douglas Aircraft Company">Douglas Aircraft Company</a> for the <a href="/wiki/United_States_Army_Air_Forces" title="United States Army Air Forces">United States Army Air Forces</a> (USAAF) during the early 1940s. The design was originally given the designation <b>XBLR-2</b> (<i>XBLR</i> denoting "Experimental Bomber, Long Range"). It was the largest bomber built for the USAAF until 1946, with the <a href="/wiki/Convair_B-36" class="mw-redirect" title="Convair B-36">Convair B-36</a> surpassing it in size. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Design_and_development">Design and development</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=1" title="Edit section: Design and development"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The XB-19 project was intended to test flight characteristics and design techniques for giant bombers. Despite advances in technology that made the XB-19 obsolete before it was completed, the Army Air Corps believed the prototype would be useful for testing despite Douglas Aircraft wanting to cancel the expensive project.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> Its construction took so long that competition for the contracts to build the <a href="/wiki/XB-35" class="mw-redirect" title="XB-35">XB-35</a> and <a href="/wiki/Convair_B-36" class="mw-redirect" title="Convair B-36">XB-36</a> occurred two months before its first flight. </p><p>The plane first flew on 27 June 1941, more than three years after the construction contract was awarded. It was based at <a href="/wiki/Wright_Field" class="mw-redirect" title="Wright Field">Wright Field</a> from January to November 1942.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup> In 1943, the <a href="/wiki/Wright_R-3350" class="mw-redirect" title="Wright R-3350">Wright R-3350</a> engines were replaced with liquid-cooled <a href="/wiki/W24_engine" class="mw-redirect" title="W24 engine">W24</a> <a href="/wiki/Allison_V-3420" title="Allison V-3420">Allison V-3420</a>-11 by the aircraft division of <a href="/wiki/Fisher_Body" title="Fisher Body">Fisher Body</a> in support of the <a href="/wiki/XB-39" class="mw-redirect" title="XB-39">XB-39</a> project.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> As part of the program, it was equipped with engine driven auxiliary powerplants.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> After completion of testing, the XB-19 was earmarked for conversion into a cargo aircraft, but modifications were not completed, and the aircraft flew for the last time on 17 August 1946. It was eventually scrapped at Tucson in June 1949.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Surviving_artifacts">Surviving artifacts</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=2" title="Edit section: Surviving artifacts"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Douglas_XB-19_before_scrapping.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Douglas_XB-19_before_scrapping.jpg/220px-Douglas_XB-19_before_scrapping.jpg" decoding="async" width="220" height="148" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Douglas_XB-19_before_scrapping.jpg/330px-Douglas_XB-19_before_scrapping.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Douglas_XB-19_before_scrapping.jpg/440px-Douglas_XB-19_before_scrapping.jpg 2x" data-file-width="1800" data-file-height="1207" /></a><figcaption>XB-19A at <a href="/wiki/Davis-Monthan_Air_Force_Base" class="mw-redirect" title="Davis-Monthan Air Force Base">Davis-Monthan Air Force Base</a> before scrapping.</figcaption></figure> <p>The new U.S. Air Force had plans to save the XB-19 for eventual display, but in 1949 the Air Force did not have a program to save historic aircraft and the Air Force Museum had not yet been built.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> The XB-19 was therefore scrapped, but two of its enormous main tires were saved.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>c<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Specifications_(XB-19)"><span id="Specifications_.28XB-19.29"></span>Specifications (XB-19)</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=3" title="Edit section: Specifications (XB-19)"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Frameless"><a href="/wiki/File:Douglas_XB-19_3-view_line_drawing.png" class="mw-file-description" title="3-view line drawing of the Douglas XB-19"><img alt="3-view line drawing of the Douglas XB-19" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Douglas_XB-19_3-view_line_drawing.png/220px-Douglas_XB-19_3-view_line_drawing.png" decoding="async" width="220" height="133" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Douglas_XB-19_3-view_line_drawing.png/330px-Douglas_XB-19_3-view_line_drawing.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Douglas_XB-19_3-view_line_drawing.png/440px-Douglas_XB-19_3-view_line_drawing.png 2x" data-file-width="4619" data-file-height="2794" /></a><figcaption>3-view line drawing of the Douglas XB-19</figcaption></figure> <p style="font-size: 90%; margin:0;"><i>Data from</i> McDonnell Douglas aircraft since 1920: Volume<span class="nowrap"> </span>I<sup id="cite_ref-Francillon_16-0" class="reference"><a href="#cite_note-Francillon-16"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></p><p><span style="font-size:120%"><b>General characteristics</b></span> </p><ul><li><b>Crew:</b> 16 combat crew, with provision for 2 additional flight mechanics and six-man relief crew</li> <li><b>Length:</b> 132 ft 4 in (40.34 m)</li> <li><b>Wingspan:</b> 212 ft 0 in (64.62 m)</li> <li><b>Height:</b> 42 ft 0 in (12.80 m)</li> <li><b>Wing area:</b> 4,285 sq ft (398.1 m<sup>2</sup>)</li> <li><b>Empty weight:</b> 86,000 lb (39,009 kg)</li> <li><b>Gross weight:</b> 140,000 lb (63,503 kg)</li> <li><b>Max takeoff weight:</b> 162,000 lb (73,482 kg)</li> <li><b>Fuel capacity:</b> 10,350 US gal (8,620 imp gal; 39,200 L) internals with optional auxiliary tanks of 824 US gal (686 imp gal; 3,120 L) capacity</li> <li><b>Powerplant:</b> 4 × <a href="/wiki/Wright_R-3350-5_Duplex_Cyclone" class="mw-redirect" title="Wright R-3350-5 Duplex Cyclone">Wright R-3350-5 Duplex Cyclone</a> 18-cylinder air-cooled radial piston engines, 2,000 hp (1,500 kW) each <sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>d<span class="cite-bracket">]</span></a></sup></li> <li><b>Propellers:</b> 3-bladed constant-speed metal propellers, 17 ft 0 in (5.18 m) diameter</li></ul> <p><span style="font-size:120%"><b>Performance</b></span> </p> <ul><li><b>Maximum speed:</b> 224 mph (360 km/h, 195 kn) at 15,700 ft (4,800 m)</li> <li><b>Cruise speed:</b> 135 mph (217 km/h, 117 kn)</li> <li><b>Range:</b> 5,200 mi (8,400 km, 4,500 nmi)</li> <li><b>Ferry range:</b> 7,710 mi (12,410 km, 6,700 nmi) with auxiliary tanks fitted</li> <li><b>Service ceiling:</b> 23,000 ft (7,000 m)</li> <li><b>Rate of climb:</b> 650 ft/min (3.3 m/s)</li> <li><b>Wing loading:</b> 32.6 lb/sq ft (159 kg/m<sup>2</sup>)</li> <li><b><a href="/wiki/Power-to-weight_ratio" title="Power-to-weight ratio">Power/mass</a>:</b> 0.057 hp/lb (0.094 kW/kg)</li></ul> <p><span style="font-size:120%"><b>Armament</b></span><br /> </p> <ul><li><b>Guns:</b> <br /></li></ul> <dl><dd><ul><li>5 × 0.5 in (12.70 mm) <a href="/wiki/M2_Browning_machine_gun" class="mw-redirect" title="M2 Browning machine gun">M2 Browning machine guns</a></li> <li>6 × 0.3 in (7.62 mm) <a href="/wiki/M1919_Browning_machine_gun" title="M1919 Browning machine gun">M1919 Browning machine guns</a></li> <li>2 × 37 mm (1.457 in) <a href="/wiki/M4_autocannon" title="M4 autocannon">M4 autocannon</a></li></ul></dd></dl> <ul><li><b>Bombs:</b> 18,700 lb (8,500 kg) internal; maximum bomb load of 37,100 lb (16,800 kg) including external racks with reduced fuel load</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1266661725">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aviacionavion.png/28px-Aviacionavion.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aviacionavion.png/42px-Aviacionavion.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aviacionavion.png/56px-Aviacionavion.png 2x" data-file-width="1600" data-file-height="1600" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:Aviation" title="Portal:Aviation">Aviation portal</a></span></li></ul> <p> <b>Aircraft of comparable role, configuration, and era</b> </p> <ul><li><a href="/wiki/Boeing_XB-15" title="Boeing XB-15">Boeing XB-15</a></li> <li><a href="/wiki/Boeing_Y1B-20" title="Boeing Y1B-20">Boeing Y1B-20</a></li></ul> <p> <b>Related lists</b> </p> <ul><li><a href="/wiki/List_of_bomber_aircraft" title="List of bomber aircraft">List of bomber aircraft</a></li> <li><a href="/wiki/List_of_aircraft_of_World_War_II" title="List of aircraft of World War II">List of aircraft of World War II</a></li> <li><a href="/wiki/List_of_military_aircraft_of_the_United_States" class="mw-redirect" title="List of military aircraft of the United States">List of military aircraft of the United States</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Footnotes">Footnotes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=6" title="Edit section: Footnotes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">The cost of the aircraft was estimated at $3,250,000 in 1941.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">While there, it took part in tests to measure noise levels inside aircraft.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text">The tires measured 96 inches in diameter.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><b>XB-19A</b> later fitted with 4x 2,600 hp (1,900 kW) <a href="/wiki/Allison_V-3420-11" class="mw-redirect" title="Allison V-3420-11">Allison V-3420-11</a> 24-cylinder engines</span> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Notes">Notes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=7" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation cs2"><a rel="nofollow" class="external text" href="http://archive.org/details/sim_air-force-magazine_1941-07-01_24_13/page/n24">"The Job of Air Corps Test Pilots"</a>, <i>Air Corps Newsletter</i>, p. 23, 1941-07-01<span class="reference-accessdate">, retrieved <span class="nowrap">2021-01-09</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Air+Corps+Newsletter&rft.atitle=The+Job+of+Air+Corps+Test+Pilots&rft.pages=23&rft.date=1941-07-01&rft_id=http%3A%2F%2Farchive.org%2Fdetails%2Fsim_air-force-magazine_1941-07-01_24_13%2Fpage%2Fn24&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></span> </li> <li id="cite_note-3"><span 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(December 1940). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=JScDAAAAMBAJ&pg=PA56">"Uncle Sam Builds a Europe-and-Back Warplane"</a>. <i>Popular Science</i>. Vol. 137, no. 6. pp. <span class="nowrap">56–</span>59<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Science&rft.atitle=Uncle+Sam+Builds+a+Europe-and-Back+Warplane&rft.volume=137&rft.issue=6&rft.pages=%3Cspan+class%3D%22nowrap%22%3E56-%3C%2Fspan%3E59&rft.date=1940-12&rft.aulast=Boone&rft.aufirst=Andrew+R.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DJScDAAAAMBAJ%26pg%3DPA56&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="http://archive.org/details/sim_air-force-magazine_1941-05-15_24_10/page/n2">"Dedication of the New XB-19 Bomber"</a>, <i>Air Corps News Letter</i>, vol. 24, no. 10, Intelligence Division, Air Corps, pp. <span class="nowrap">1–</span>2, 15 May 1941<span class="reference-accessdate">, retrieved <span class="nowrap">15 February</span> 2022</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Air+Corps+News+Letter&rft.atitle=Dedication+of+the+New+XB-19+Bomber&rft.volume=24&rft.issue=10&rft.pages=%3Cspan+class%3D%22nowrap%22%3E1-%3C%2Fspan%3E2&rft.date=1941-05-15&rft_id=http%3A%2F%2Farchive.org%2Fdetails%2Fsim_air-force-magazine_1941-05-15_24_10%2Fpage%2Fn2&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLynn1945" class="citation cs2">Lynn, Bert D. 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Vol. 76, no. 1. July 1941. pp. <span class="nowrap">8–</span>11, 191<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Mechanics&rft.atitle=Man-O%27-War+with+Wings&rft.volume=76&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E8-%3C%2Fspan%3E11%2C+191&rft.date=1941-07&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DmtkDAAAAMBAJ%26pg%3DRA1-PA8&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcLarren1940" class="citation magazine cs1">McLarren, Robert (November 1940). <a rel="nofollow" class="external text" href="http://archive.org/details/sim_model-airplane-news_1940-11_23_5/page/14">"The World's Biggest Bomber"</a>. <i>Model Airplane News</i>. Vol. 23, no. 5. pp. <span class="nowrap">14–</span>15, <span class="nowrap">60–</span>62<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Model+Airplane+News&rft.atitle=The+World%27s+Biggest+Bomber&rft.volume=23&rft.issue=5&rft.pages=%3Cspan+class%3D%22nowrap%22%3E14-%3C%2Fspan%3E15%2C+%3Cspan+class%3D%22nowrap%22%3E60-%3C%2Fspan%3E62&rft.date=1940-11&rft.aulast=McLarren&rft.aufirst=Robert&rft_id=http%3A%2F%2Farchive.org%2Fdetails%2Fsim_model-airplane-news_1940-11_23_5%2Fpage%2F14&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=69kDAAAAMBAJ&pg=RA1-PA27">"Monster Warbird B-19 Tries Out Its Wings"</a>. <i>Popular Mechanics</i>. Vol. 76, no. 3. September 1941. p. 27<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Mechanics&rft.atitle=Monster+Warbird+B-19+Tries+Out+Its+Wings&rft.volume=76&rft.issue=3&rft.pages=27&rft.date=1941-09&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D69kDAAAAMBAJ%26pg%3DRA1-PA27&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="http://www.afhra.af.mil/Portals/16/documents/Studies/1-50/AFD-090602-028.pdf"><i>The Development of the Heavy Bomber, 1918–1944</i></a> <span class="cs1-format">(PDF)</span>, US Air Force Historical Studies, Historical Division, Air University, 1951, pp. <span class="nowrap">87–</span>88<span class="reference-accessdate">, retrieved <span class="nowrap">15 February</span> 2022</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Development+of+the+Heavy+Bomber%2C+1918%E2%80%931944&rft.series=US+Air+Force+Historical+Studies&rft.pages=%3Cspan+class%3D%22nowrap%22%3E87-%3C%2Fspan%3E88&rft.pub=Historical+Division%2C+Air+University&rft.date=1951&rft_id=http%3A%2F%2Fwww.afhra.af.mil%2FPortals%2F16%2Fdocuments%2FStudies%2F1-50%2FAFD-090602-028.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20130927135106/http://www.flightglobal.com/pdfarchive/view/1941/1941%20-%201374.html">"The Douglas B-19"</a>. <i>Flight</i>. 19 June 1941. Archived from <a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1941/1941%20-%201374.html">the original</a> on 27 September 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Flight&rft.atitle=The+Douglas+B-19&rft.date=1941-06-19&rft_id=http%3A%2F%2Fwww.flightglobal.com%2Fpdfarchive%2Fview%2F1941%2F1941%2520-%25201374.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=19kDAAAAMBAJ&pg=PA814">"The World's Biggest Bomber"</a>. <i>Popular Mechanics</i>. Vol. 74, no. 6. December 1940. pp. <span class="nowrap">814–</span>815<span class="reference-accessdate">. Retrieved <span class="nowrap">15 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Mechanics&rft.atitle=The+World%27s+Biggest+Bomber&rft.volume=74&rft.issue=6&rft.pages=%3Cspan+class%3D%22nowrap%22%3E814-%3C%2Fspan%3E815&rft.date=1940-12&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D19kDAAAAMBAJ%26pg%3DPA814&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADouglas+XB-19" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Douglas_XB-19&action=edit&section=9" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid 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href="/wiki/Template:Douglas_military_aircraft" title="Template:Douglas military aircraft"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Douglas_military_aircraft" title="Template talk:Douglas military aircraft"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Douglas_military_aircraft" title="Special:EditPage/Template:Douglas military aircraft"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Douglas_military_aircraft159" style="font-size:114%;margin:0 4em"><a href="/wiki/Douglas_Aircraft_Company" title="Douglas Aircraft Company">Douglas</a> military aircraft</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fighters</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_XFD" title="Douglas XFD">XFD</a></li> <li><a href="/wiki/Douglas_XP-48" title="Douglas XP-48">XP-48</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">P-70</a></li> <li><a href="/wiki/Douglas_F3D_Skyknight" title="Douglas F3D Skyknight">F3D Skyknight</a></li> <li><a href="/wiki/Douglas_F4D_Skyray" title="Douglas F4D Skyray">F4D Skyray</a></li> <li><a href="/wiki/Douglas_F5D_Skylancer" title="Douglas F5D Skylancer">F5D Skylancer</a></li> <li><a href="/wiki/Douglas_F6D_Missileer" title="Douglas F6D Missileer">XF6D Missileer</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Ground attack</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_XA-2" title="Douglas XA-2">XA-2</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">A-20</a></li> <li><a href="/wiki/Douglas_SBD_Dauntless" title="Douglas SBD Dauntless">A-24</a></li> <li><a href="/wiki/Douglas_A-26_Invader" title="Douglas A-26 Invader">A-26 Invader</a></li> <li><a href="/wiki/Douglas_A-33" title="Douglas A-33">A-33</a></li> <li><a href="/wiki/Douglas_A-1_Skyraider" title="Douglas A-1 Skyraider">A-1 Skyraider</a></li> <li><a href="/wiki/Douglas_A-3_Skywarrior" title="Douglas A-3 Skywarrior">A-3 Skywarrior</a></li> <li><a href="/wiki/Douglas_A-4_Skyhawk" title="Douglas A-4 Skyhawk">A-4 Skyhawk</a>/<a href="/wiki/Lockheed_Martin_A-4AR_Fightinghawk" title="Lockheed Martin A-4AR Fightinghawk">A-4AR Fightinghawk</a>/<a href="/wiki/ST_Aerospace_A-4SU_Super_Skyhawk" title="ST Aerospace A-4SU Super Skyhawk">A-4SU Super Skyhawk</a></li> <li><a href="/wiki/Douglas_AC-47_Spooky" title="Douglas AC-47 Spooky">AC-47 "Spooky"</a></li></ul> <ul><li><a href="/wiki/Douglas_DT" title="Douglas DT">DT</a></li> <li><a href="/wiki/Douglas_T2D" title="Douglas T2D">T2D</a></li> <li><a href="/wiki/Douglas_XT3D" title="Douglas XT3D">XT3D</a></li> <li><a href="/wiki/Douglas_TBD_Devastator" title="Douglas TBD Devastator">TBD Devastator</a></li> <li><a href="/wiki/Douglas_SBD_Dauntless" title="Douglas SBD Dauntless">SBD Dauntless</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">BD</a></li> <li><a href="/wiki/Douglas_BTD_Destroyer" title="Douglas BTD Destroyer">XBTD Destroyer</a></li> <li><a href="/wiki/Douglas_XTB2D_Skypirate" title="Douglas XTB2D Skypirate">XTB2D Skypirate</a></li> <li><a href="/wiki/Douglas_A-1_Skyraider" title="Douglas A-1 Skyraider">AD Skyraider</a></li> <li><a href="/wiki/Douglas_A2D_Skyshark" title="Douglas A2D Skyshark">XA2D Skyshark</a></li> <li><a href="/wiki/Douglas_A-3_Skywarrior" title="Douglas A-3 Skywarrior">A3D Skywarrior</a></li> <li><a href="/wiki/Douglas_A-4_Skyhawk" title="Douglas A-4 Skyhawk">A4D Skyhawk</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Bombers</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_Y1B-7" title="Douglas Y1B-7">YB-7</a></li> <li><a href="/wiki/Douglas_YOA-5" title="Douglas YOA-5">YB-11</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">B-18 Bolo</a></li> <li><a class="mw-selflink selflink">XB-19</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">XB-22</a></li> <li><a href="/wiki/Douglas_B-23_Dragon" title="Douglas B-23 Dragon">B-23 Dragon</a></li> <li><a href="/wiki/Douglas_A-26_Invader" title="Douglas A-26 Invader">B-26 Invader</a></li> <li><a href="/wiki/Douglas_XB-31" title="Douglas XB-31">XB-31</a></li> <li><a href="/wiki/Douglas_XB-42_Mixmaster" title="Douglas XB-42 Mixmaster">XB-42 Mixmaster</a></li> <li><a href="/wiki/Douglas_XB-43_Jetmaster" title="Douglas XB-43 Jetmaster">XB-43 Jetmaster</a></li> <li><a href="/wiki/Douglas_B-66_Destroyer" title="Douglas B-66 Destroyer">B-66 Destroyer</a></li> <li><a href="/wiki/Douglas_423" title="Douglas 423">Model 423</a></li> <li><a href="/wiki/Douglas_1211-J" title="Douglas 1211-J">Model 1211-J</a></li></ul> <ul><li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">DB-1</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">DB-2</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">DB-7</a></li> <li><a href="/wiki/Northrop_A-17" title="Northrop A-17">DB-8</a></li> <li><a href="/wiki/Northrop_BT" title="Northrop BT">DB-19</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">DB-73</a></li></ul> <ul><li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">Boston I/II/III/IV/V</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">Digby I</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">Havoc I/II</a></li> <li><a href="/wiki/Northrop_BT" title="Northrop BT">DXD1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Observation</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_O-2" title="Douglas O-2">O-2</a></li> <li><a href="/wiki/Douglas_O-2" title="Douglas O-2">OD</a></li> <li><a href="/wiki/Douglas_O2D" title="Douglas O2D">O2D</a></li> <li><a href="/wiki/Douglas_O-31" title="Douglas O-31">O-31</a></li> <li><a href="/wiki/Douglas_Y1B-7" title="Douglas Y1B-7">O-35</a></li> <li><a href="/wiki/Douglas_O-38" title="Douglas O-38">O-38</a></li> <li><a href="/wiki/Douglas_O-43" title="Douglas O-43">O-43</a></li> <li><a href="/wiki/Douglas_YOA-5" title="Douglas YOA-5">YO-44</a></li> <li><a href="/wiki/Douglas_O-46" title="Douglas O-46">O-46</a></li> <li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">O-53</a></li> <li><a href="/wiki/Douglas_YOA-5" title="Douglas YOA-5">YOA-5</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Patrol</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Naval_Aircraft_Factory_PN" title="Naval Aircraft Factory PN">PD</a></li> <li><a href="/wiki/Douglas_T2D" title="Douglas T2D">P2D</a></li> <li><a href="/wiki/Douglas_XP3D" title="Douglas XP3D">P3D</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Reconnaissance</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">F-3</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Transports</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_C-1" title="Douglas C-1">C-1</a></li> <li><a href="/wiki/Douglas_Dolphin" title="Douglas Dolphin">C-21</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">C-32</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">C-33</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">YC-34</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">C-38</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">C-39</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">C-41</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-41A</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">C-42</a></li> <li><a href="/wiki/Douglas_C-47_Skytrain" title="Douglas C-47 Skytrain">C-47 Skytrain</a> (Dakota I/III/IV)</li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-48</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-49</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-50</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-51</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-52</a></li> <li><a href="/wiki/Douglas_C-47_Skytrain" title="Douglas C-47 Skytrain">C-53 Skytrooper</a></li> <li><a href="/wiki/Douglas_C-54_Skymaster" title="Douglas C-54 Skymaster">C-54 Skymaster</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">C-58</a></li> <li><a href="/wiki/Douglas_B-23_Dragon" title="Douglas B-23 Dragon">UC-67</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-68</a></li> <li><a href="/wiki/Douglas_C-74_Globemaster" title="Douglas C-74 Globemaster">C-74 Globemaster</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">C-84</a></li> <li><a href="/wiki/Douglas_DC-5" title="Douglas DC-5">C-110</a></li> <li><a href="/wiki/Douglas_DC-6" title="Douglas DC-6">XC-112/YC-112</a></li> <li><a href="/wiki/Douglas_C-54_Skymaster" title="Douglas C-54 Skymaster">XC-114</a></li> <li><a href="/wiki/Douglas_C-54_Skymaster" title="Douglas C-54 Skymaster">YC-116</a></li> <li><a href="/wiki/Douglas_C-47_Skytrain" title="Douglas C-47 Skytrain">C-117</a> <ul><li><a href="/wiki/Douglas_R4D-8" title="Douglas R4D-8">C-117D</a></li></ul></li> <li><a href="/wiki/Douglas_DC-6" title="Douglas DC-6">C-118</a></li> <li><a href="/wiki/Douglas_C-124_Globemaster_II" title="Douglas C-124 Globemaster II">C-124 Globemaster II</a></li> <li><a href="/wiki/Douglas_C-47_Skytrain" title="Douglas C-47 Skytrain">YC-129</a></li> <li><a href="/wiki/Douglas_C-132" title="Douglas C-132">C-132</a></li> <li><a href="/wiki/Douglas_C-133_Cargomaster" title="Douglas C-133 Cargomaster">C-133 Cargomaster</a></li></ul> <ul><li><a href="/wiki/McDonnell_Douglas_C-9" title="McDonnell Douglas C-9">C-9</a> (Nightingale/Skytrain II)</li> <li><a href="/wiki/Douglas_DC-8" title="Douglas DC-8">C-24</a></li></ul> <ul><li><a href="/wiki/Douglas_Dolphin" title="Douglas Dolphin">RD</a></li> <li><a href="/wiki/Douglas_DC-2" title="Douglas DC-2">R2D</a></li> <li><a href="/wiki/Douglas_DC-5" title="Douglas DC-5">R3D</a></li> <li><a href="/wiki/Douglas_C-47_Skytrain" title="Douglas C-47 Skytrain">R4D-1/-3/-5/-6/-7</a></li> <li><a href="/wiki/Douglas_R4D-8" title="Douglas R4D-8">R4D-8</a></li> <li><a href="/wiki/Douglas_C-54_Skymaster" title="Douglas C-54 Skymaster">R5D</a></li> <li><a href="/wiki/Douglas_A-26_Invader" title="Douglas A-26 Invader">JD</a></li> <li><a href="/wiki/Douglas_DC-6" title="Douglas DC-6">R6D</a></li></ul> <ul><li><a href="/wiki/Douglas_C-47_Skytrain" title="Douglas C-47 Skytrain">CC-129</a></li> <li><a href="/wiki/Douglas_DC-3" title="Douglas DC-3">LXD1</a></li> <li><a href="/wiki/Piaggio_PD.808" title="Piaggio PD.808">PD.808</a></li> <li><a href="/wiki/Douglas_C-54_Skymaster" title="Douglas C-54 Skymaster">Skymaster I</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Gliders</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_XCG-17" title="Douglas XCG-17">XCG-17</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Training aircraft</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_O-2" title="Douglas O-2">BT-1</a></li> <li><a href="/wiki/Douglas_O-2" title="Douglas O-2">BT-2</a></li> <li><a href="/wiki/Douglas_XT-30" title="Douglas XT-30">XT-30</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Experimental</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_World_Cruiser" title="Douglas World Cruiser">World Cruiser</a></li> <li><a href="/wiki/Douglas_D-558-1_Skystreak" title="Douglas D-558-1 Skystreak">D-558-1 Skystreak</a></li> <li><a href="/wiki/Douglas_D-558-2_Skyrocket" title="Douglas D-558-2 Skyrocket">D-558-2 Skyrocket</a></li> <li><a href="/wiki/Douglas_X-3_Stiletto" title="Douglas X-3 Stiletto">X-3 Stiletto</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="USAAS/USAAC/USAAF/USAF_bomber_designations,_Army/Air_Force_and_Tri-Service_systems432" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:USAF_bomber_aircraft" title="Template:USAF bomber aircraft"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:USAF_bomber_aircraft" title="Template talk:USAF bomber aircraft"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:USAF_bomber_aircraft" title="Special:EditPage/Template:USAF bomber aircraft"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="USAAS/USAAC/USAAF/USAF_bomber_designations,_Army/Air_Force_and_Tri-Service_systems432" style="font-size:114%;margin:0 4em"><a href="/wiki/United_States_Army_Air_Service" title="United States Army Air Service">USAAS</a>/<a href="/wiki/United_States_Army_Air_Corps" title="United States Army Air Corps">USAAC</a>/<a href="/wiki/United_States_Army_Air_Forces" title="United States Army Air Forces">USAAF</a>/<a href="/wiki/United_States_Air_Force" title="United States Air Force">USAF</a> bomber designations, Army/Air Force and <a href="/wiki/1962_United_States_Tri-Service_aircraft_designation_system" title="1962 United States Tri-Service aircraft designation system">Tri-Service</a> systems</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Original sequences<br />(1924–1930)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Light bomber</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Huff-Daland_LB-1" title="Huff-Daland LB-1">LB-1</a></li> <li><a href="/wiki/Fokker_F-10" title="Fokker F-10">LB-2</a></li> <li><a href="/wiki/Keystone_XLB-3" title="Keystone XLB-3">LB-3</a></li> <li><a href="/wiki/Martin_XLB-4" title="Martin XLB-4">LB-4</a></li> <li><a href="/wiki/Keystone_LB-5" title="Keystone LB-5">LB-5</a></li> <li><a href="/wiki/Keystone_LB-6" title="Keystone LB-6">LB-6</a></li> <li><a href="/wiki/Keystone_LB-6" title="Keystone LB-6">LB-7</a></li> <li><a href="/wiki/Keystone_LB-6" title="Keystone LB-6">LB-8</a></li> <li><a href="/wiki/Keystone_LB-6" title="Keystone LB-6">LB-9</a></li> <li><a href="/wiki/Keystone_B-3" title="Keystone B-3">LB-10</a></li> <li><a href="/wiki/Keystone_LB-6" title="Keystone LB-6">LB-11</a></li> <li><a href="/wiki/Keystone_LB-6" title="Keystone LB-6">LB-12</a></li> <li><a href="/wiki/Keystone_B-4" title="Keystone B-4">LB-13</a></li> <li><a href="/wiki/Keystone_B-5" title="Keystone B-5">LB-14</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Medium bomber</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Huff-Daland_XB-1" title="Huff-Daland XB-1">B-1</a></li> <li><a href="/wiki/Curtiss_B-2_Condor" title="Curtiss B-2 Condor">B-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Heavy bomber</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Huff-Daland_XHB-1" title="Huff-Daland XHB-1">HB-1</a></li> <li><a href="/wiki/Fokker_XHB-2" title="Fokker XHB-2">HB-2</a></li> <li><a href="/wiki/Huff-Daland_XHB-3" title="Huff-Daland XHB-3">HB-3</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Main sequence<br />(1930–1962)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Huff-Daland_XB-1" title="Huff-Daland XB-1">B-1</a></li> <li><a href="/wiki/Curtiss_B-2_Condor" title="Curtiss B-2 Condor">B-2</a></li> <li><a href="/wiki/Keystone_B-3" title="Keystone B-3">B-3</a></li> <li><a href="/wiki/Keystone_B-4" title="Keystone B-4">B-4</a></li> <li><a href="/wiki/Keystone_B-5" title="Keystone B-5">B-5</a></li> <li><a href="/wiki/Keystone_B-6" title="Keystone B-6">B-6</a></li> <li><a href="/wiki/Douglas_Y1B-7" title="Douglas Y1B-7">B-7</a></li> <li><a href="/wiki/Fokker_XB-8" title="Fokker XB-8">B-8</a></li> <li><a href="/wiki/Boeing_YB-9" title="Boeing YB-9">B-9</a></li> <li><a href="/wiki/Martin_B-10" title="Martin B-10">B-10</a></li> <li><a href="/wiki/Douglas_YOA-5" title="Douglas YOA-5">B-11</a></li> <li><a href="/wiki/Martin_B-10" title="Martin B-10">B-12</a></li> <li><a href="/wiki/Martin_B-10" title="Martin B-10">B-13</a></li> <li><a href="/wiki/Martin_B-10" title="Martin B-10">B-14</a></li> <li><a href="/wiki/Boeing_XB-15" title="Boeing XB-15">B-15</a></li> <li><a href="/wiki/Martin_XB-16" title="Martin XB-16">B-16</a></li> <li><a href="/wiki/Boeing_B-17_Flying_Fortress" title="Boeing B-17 Flying Fortress">B-17</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">B-18</a></li> <li><a class="mw-selflink selflink">B-19</a></li> <li><a href="/wiki/Boeing_Y1B-20" title="Boeing Y1B-20">B-20</a></li> <li><a href="/wiki/North_American_XB-21" title="North American XB-21">B-21</a></li> <li><a href="/wiki/Douglas_B-18_Bolo" title="Douglas B-18 Bolo">B-22</a></li> <li><a href="/wiki/Douglas_B-23_Dragon" title="Douglas B-23 Dragon">B-23</a></li> <li><a href="/wiki/Consolidated_B-24_Liberator" title="Consolidated B-24 Liberator">B-24</a></li> <li><a href="/wiki/North_American_B-25_Mitchell" title="North American B-25 Mitchell">B-25</a></li> <li><a href="/wiki/Martin_B-26_Marauder" title="Martin B-26 Marauder">B-26</a></li> <li><a href="/wiki/Martin_XB-27" title="Martin XB-27">B-27</a></li> <li><a href="/wiki/North_American_XB-28_Dragon" title="North American XB-28 Dragon">B-28</a></li> <li><a href="/wiki/Boeing_B-29_Superfortress" title="Boeing B-29 Superfortress">B-29</a> <ul><li><a href="/wiki/Boeing_B-50_Superfortress" title="Boeing B-50 Superfortress">B-29D</a></li></ul></li> <li><a href="/wiki/Lockheed_XB-30" title="Lockheed XB-30">B-30</a></li> <li><a href="/wiki/Douglas_XB-31" title="Douglas XB-31">B-31</a></li> <li><a href="/wiki/Consolidated_B-32_Dominator" title="Consolidated B-32 Dominator">B-32</a></li> <li><a href="/wiki/Martin_XB-33_Super_Marauder" title="Martin XB-33 Super Marauder">B-33</a></li> <li><a href="/wiki/Lockheed_Ventura" title="Lockheed Ventura">B-34</a></li> <li><a href="/wiki/Northrop_YB-35" title="Northrop YB-35">B-35</a></li> <li><a href="/wiki/Convair_B-36_Peacemaker" title="Convair B-36 Peacemaker">B-36</a> <ul><li><a href="/wiki/Convair_YB-60" title="Convair YB-60">B-36G</a></li> <li><a href="/wiki/Convair_NB-36H" title="Convair NB-36H">NB-36H</a></li></ul></li> <li><a href="/wiki/Lockheed_Ventura" title="Lockheed Ventura">B-37</a></li> <li><a href="/wiki/Boeing_XB-38_Flying_Fortress" title="Boeing XB-38 Flying Fortress">B-38</a></li> <li><a href="/wiki/Boeing_XB-39_Superfortress" title="Boeing XB-39 Superfortress">B-39</a></li> <li><a href="/wiki/Boeing_YB-40_Flying_Fortress" title="Boeing YB-40 Flying Fortress">B-40</a></li> <li><a href="/wiki/Consolidated_XB-41_Liberator" title="Consolidated XB-41 Liberator">B-41</a></li> <li><a href="/wiki/Douglas_XB-42_Mixmaster" title="Douglas XB-42 Mixmaster">B-42</a></li> <li><a href="/wiki/Douglas_XB-43_Jetmaster" title="Douglas XB-43 Jetmaster">B-43</a></li> <li><a href="/wiki/Boeing_B-50_Superfortress" title="Boeing B-50 Superfortress">B-44</a></li> <li><a href="/wiki/North_American_B-45_Tornado" title="North American B-45 Tornado">B-45</a></li> <li><a href="/wiki/Convair_XB-46" title="Convair XB-46">B-46</a></li> <li><a href="/wiki/Boeing_B-47_Stratojet" title="Boeing B-47 Stratojet">B-47</a> <ul><li><a href="/wiki/Boeing_XB-56" title="Boeing XB-56">B-47C</a></li></ul></li> <li><a href="/wiki/Martin_XB-48" title="Martin XB-48">B-48</a></li> <li><a href="/wiki/Northrop_YB-49" title="Northrop YB-49">B-49</a></li> <li><a href="/wiki/Boeing_B-50_Superfortress" title="Boeing B-50 Superfortress">B-50</a> <ul><li><a href="/wiki/Boeing_B-54" title="Boeing B-54">B-50C</a></li></ul></li> <li><a href="/wiki/Martin_XB-51" title="Martin XB-51">B-51</a></li> <li><a href="/wiki/Boeing_B-52_Stratofortress" title="Boeing B-52 Stratofortress">B-52</a></li> <li><a href="/wiki/Convair_XB-53" title="Convair XB-53">B-53</a></li> <li><a href="/wiki/Boeing_B-54" title="Boeing B-54">B-54</a></li> <li><a href="/wiki/Boeing_XB-55" title="Boeing XB-55">B-55</a></li> <li><a href="/wiki/Boeing_XB-56" title="Boeing XB-56">B-56</a></li> <li><a href="/wiki/Martin_B-57_Canberra" title="Martin B-57 Canberra">B-57</a> <ul><li><a href="/wiki/Martin_RB-57D_Canberra" title="Martin RB-57D Canberra">RB-57D</a></li> <li><a href="/wiki/Martin/General_Dynamics_RB-57F_Canberra" title="Martin/General Dynamics RB-57F Canberra">RB-57F</a></li></ul></li> <li><a href="/wiki/Convair_B-58_Hustler" title="Convair B-58 Hustler">B-58</a></li> <li><a href="/wiki/Boeing_XB-59" title="Boeing XB-59">B-59</a></li> <li><a href="/wiki/Convair_YB-60" title="Convair YB-60">B-60</a></li> <li><a href="/wiki/MGM-1_Matador" title="MGM-1 Matador">B-61</a></li> <li><a href="/wiki/SM-62_Snark" title="SM-62 Snark">B-62</a></li> <li><a href="/wiki/GAM-63_RASCAL" title="GAM-63 RASCAL">B-63</a></li> <li><a href="/wiki/SM-64_Navaho" title="SM-64 Navaho">B-64</a></li> <li><a href="/wiki/SM-65_Atlas" title="SM-65 Atlas">B-65</a></li> <li><a href="/wiki/Douglas_B-66_Destroyer" title="Douglas B-66 Destroyer">B-66</a></li> <li><a href="/wiki/GAM-67_Crossbow" title="GAM-67 Crossbow">B-67</a></li> <li><a href="/wiki/Martin_XB-68" title="Martin XB-68">B-68</a></li> <li><a href="/wiki/Lockheed_P-2_Neptune" title="Lockheed P-2 Neptune">B-69</a></li> <li><a href="/wiki/North_American_XB-70_Valkyrie" title="North American XB-70 Valkyrie">B-70</a></li> <li><a href="/wiki/Lockheed_SR-71_Blackbird" title="Lockheed SR-71 Blackbird">B-71</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Long-range bomber<br />(1935–1936)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_XB-15" title="Boeing XB-15">BLR-1</a></li> <li><a class="mw-selflink selflink">BLR-2</a></li> <li><a href="/wiki/Sikorsky_XBLR-3" title="Sikorsky XBLR-3">BLR-3</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tri-Service sequence<br />(1962–current)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Rockwell_B-1_Lancer" title="Rockwell B-1 Lancer">B-1</a></li> <li><a href="/wiki/Northrop_B-2_Spirit" title="Northrop B-2 Spirit">B-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Non-sequential</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Redesignated A-series</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Douglas_A-20_Havoc" title="Douglas A-20 Havoc">B-20</a></li> <li><a href="/wiki/Douglas_A-26_Invader" title="Douglas A-26 Invader">B-26</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fighter-bomber, in F-series</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Lockheed_Martin_FB-22" title="Lockheed Martin FB-22">FB-22</a></li> <li><a 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