Editing Boeing 767 (section)

===Overview===
[[File:G-BNWA British Airways B767-300 planform.jpg|thumb|Planform view of a {{not a typo|767-300}}, showing its 156&nbsp;ft 1&nbsp;in (47.57&nbsp;m) wide wing with a 3,050&nbsp;ft<sup>2</sup> (283.3&nbsp;m<sup>2</sup>) area and a 31.5° [[wing sweep|sweepback]],<ref name=civilJetAircraftDesign/> for a {{#expr:47.57/(283.3/47.57)round2}}:1 [[wing aspect ratio|aspect ratio]]|alt=Underside view of a jet in-flight. Each wing of the two wings have an engine. Towards the left are the horizontal stabilizers.]]

The 767 is a low-wing [[Cantilever wing|cantilever monoplane]] with a conventional tail unit featuring a single fin and rudder. The wings are swept at 31.5 degrees and optimized for a cruising speed of [[Mach number|Mach]] 0.8 ({{cvt|533|mph|sigfig=3|disp=or}}).<ref name=no22/> Each wing features a [[supercritical airfoil]] cross-section and is equipped with six-panel [[leading edge slat]]s, single- and double-slotted [[Flap (aircraft)|flaps]], inboard and outboard [[aileron]]s, and six [[spoiler (aeronautics)|spoilers]].<ref name=saver/><ref name=b15>{{Harvnb|Birtles|1999|pp=15–16.}}</ref> The [[airframe]] further incorporates [[Carbon-fiber-reinforced polymer]] [[composite material]] wing surfaces, [[Kevlar]] [[Aircraft fairing|fairings]] and access panels, plus improved [[aluminium alloy|aluminum alloys]], which together reduce overall weight by {{convert|1900|lb|kg}} versus preceding aircraft.<ref name=saver/>

To distribute the aircraft's weight on the ground, the 767 has a retractable [[tricycle landing gear]] with four wheels on each main gear and two for the nose gear.<ref name=saver/> The original wing and gear design accommodated the stretched 767-300 without major changes.<ref name=no163/> The 767-400ER features a larger, more widely spaced main gear with 777 wheels, tires, and brakes.<ref name=no119>{{harvnb|Norris|Wagner|1999|pp=119, 121}}</ref> To prevent damage if the tail section contacts the runway surface during takeoff, 767-300 and 767-400ER models are fitted with a retractable [[tailstrike|tailskid]].<ref name=no119/><ref>{{cite web|url=http://www.boeing.com/news/frontiers/archive/2004/december/i_tt.html |title=Striking out tailstrikes|first=Katherine |last=Sopranos|work=Frontiers|date=December 2004|access-date=August 21, 2012}}</ref>

All passenger Boeing 767 models have full-sized doors at the front and rear of the aircraft.<ref name="767_airport_report" /> Most -200 and -200ER models feature a single [[overwing exit]], though an optional second overwing exit increases maximum capacity from 255 to 290.<ref name="easa">{{cite web |date=February 24, 2021 |title=Type-Certificate Data Sheet |url=https://www.easa.europa.eu/sites/default/files/dfu/TCDS%20767.pdf |url-status=live |archive-url=https://ghostarchive.org/archive/20221009/https://www.easa.europa.eu/sites/default/files/dfu/TCDS%20767.pdf |archive-date=October 9, 2022 |access-date=September 22, 2022 |publisher=European Aviation Safety Agency |page=4}}</ref> The 767-300 and 767-300ER typically have either two overwing exits or an additional full-sized mid-cabin door along with a single overwing exit.<ref name="easa" /> A higher-capacity configuration includes the full-sized mid-cabin door a smaller exit door aft the wing, raising the maximum capacity from 290 to 351.<ref name="easa" /> The 767-400ER is configured with the full-sized mid-cabin door a smaller exit door aft the wing.<ref name="easa" /> The 767-300F cargo model has a single exit door on the forward left side of the aircraft.<ref name="easa" />

[[File:Boeing 767 Nose Section 41.jpg|thumb|The 767 has the same cockpit windows as the [[Boeing 757]].|alt=Close up view of a green Section 41, the nose section of a 767. Installation is not yet complete for the window panes.]]
In addition to shared avionics and computer technology, the 767 uses the same [[auxiliary power unit]], electric power systems, and hydraulic parts as the 757.<ref name=intro>{{cite web|url=http://www.flightglobal.com/pdfarchive/view/1982/1982%20-%200014.html|title=Boeing 757: introducing the big-fan narrowbody|date=January 2, 1983|last=Velupillai|first=David|work=Flight International|access-date=February 2, 2011}}</ref> A raised cockpit floor and the same forward cockpit windows result in similar pilot viewing angles.<ref>{{harvnb|Norris|Wagner|1996|p=69}}</ref> Related design and functionality allows 767 pilots to obtain a common [[type rating]] to operate the 757 and share the same [[seniority]] roster with pilots of either aircraft.<ref name=no23/><ref>{{harvnb|Wells|Clarence|2004|p=252}}</ref>