View source for Sikorsky S-76

{{Short description|American medium-size commercial utility helicopter}}
{{Redirect|S-76||S76 (disambiguation){{!}}S76}}
{{Use American English|date=April 2022}}
{{Use dmy dates|date=April 2022|cs1-dates=n}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout, and guidelines. -->
{{Infobox aircraft
 |name= S-76
 |image= File:Pesca 1 (3737941060).jpg
 |caption= A [[Coast guard#Galicia|Galician Coast Guard]] S-76C+
 |type= [[Utility helicopter]]
 |national_origin= United States
 |manufacturer= [[Sikorsky Aircraft]]
 |designer=
 |first_flight= {{start date text|13 March 1977}}<ref>Paul Eden, [https://books.google.com/books?id=2pJ8AwAAQBAJ&dq=%22Sikorsky%22+March+1977&pg=PT159 ''Civil Aircraft Recognition''] (Crowood Press, 2012)</ref>
 |introduction=
 |retired=
 |status= In Service
 |primary_user= [[Bristow Helicopters]]{{refn|name="Bristow Fleet"|{{Cite web |title = Fleet :: Bristow Group Inc. (VTOL) |url = http://www.bristowgroup.com/about-bristow/helicopter-fleet/ |url-status = live |archive-url = https://web.archive.org/web/20220120091208/https://www.bristowgroup.com/fleet |archive-date = 20 January 2022 |access-date = 25 April 2022 |website = [[Bristow Helicopters]] |language = en-US}}}}
 |more_users=[[CHC Helicopter]]{{refn|name="CHCFleet"|{{Cite web |title = Fleet |url = http://www.chcheli.com/node/54 |url-status = live |archive-url = https://web.archive.org/web/20220102001342/http://www.chcheli.com/node/54 |archive-date = 2 January 2022 |access-date = 25 April 2022 |website = [[CHC Helicopter]] |language = en-US}}}}
 |produced= 1977–present
 |number_built= 875<ref name="Lockheed"/>
 |developed_from=
 |variants= [[Sikorsky S-75]]
 |developed_into=
}}

The '''Sikorsky S-76''' is a medium-size commercial [[utility helicopter]] designed and produced by the American helicopter manufacturer [[Sikorsky Aircraft]]. It is the company's first helicopter specifically developed for the civilian market.

The S-76 was developed during the mid-1970s, originally being designated ''S-74'' but renamed in honor of the [[United States Bicentennial|U.S. Bicentennial]]. Drawing upon its recently developed [[Sikorsky S-70|S-70]] helicopter, it features twin [[turboshaft]] engines, four-bladed main and tail rotors, and retractable [[landing gear]]. On {{date|13 March 1977}}, the prototype performed its [[maiden flight]]. The initial production variant was the S-76A, the first deliveries of which took place on {{date|27 February 1979}}. Several improved models were produced over time, including the S-76 Mk II launched in 1982, and the S-76B in 1987. Development of the S-76D was particularly troubled, being delayed by four years of delays due to flight envelope issues; it was finally certified for operation on {{date|12 October 2012}}.

The S-76 initially encountered strong demand from the off-shore [[oil drilling]] industry; later on, demand shifted towards the [[VIP]] sector of the market. It performed several noteworthy flights, such as the first circumnavigation of the world in an east-to-west direction by a helicopter, and an autonomous demonstration flight during 2016. Sikorsky also used individual helicopters, often heavily modified for the purpose, for experimental purposes and to support other programmes. Demand for the S-76 waned during the 2010s, as newer helicopters such as the [[AgustaWestland AW139]] proved to be stiff competition. During March 2022, Sikorsky halted new orders for the S-76, but stated that it was looking at opportunities for future overseas manufacturing with foreign partners.

==Development==
The development of the S-76 commenced during the mid-1970s as the ''S-74''. The S-74 was subsequently redesignated the S-76 in honor of the [[United States Bicentennial|U.S. Bicentennial]]. The company had set the design goal of producing a medium helicopter suitable for corporate transportation and the [[oil drilling]] industry. Sikorsky's design work on the [[Sikorsky S-70|S-70]] helicopter (which was selected for use by the United States Army as the [[Sikorsky UH-60 Black Hawk|UH-60 Black Hawk]]) was utilized in the development of the S-76, incorporating S-70 design technology in its rotor blades and rotor heads.{{refn|name="SikArchives_S-76"|{{Cite web |last = Devine |first = Vinny |date = 11 September 2012 |orig-date = April 2012 |title = S-76 Helicopter |url = http://www.sikorskyarchives.com/S-76.php |url-status = live |archive-url = https://web.archive.org/web/20220313193140/https://www.sikorskyarchives.com/S-76.php |archive-date = 13 March 2022 |access-date = 25 April 2022 |website = Sikorsky Archives |language = en-US}}}}{{refn|name="Lambert"|{{Cite magazine |last = Lambert |first = Mark |date = 6 May 1978 |title = S-76 in the Air |url = http://www.flightglobal.com/pdfarchive/view/1978/1978%20-%200749.html |url-status = dead |magazine = [[Flight International]] |language = en-UK |volume = 113 |issue = 3607 |pages = 1377–1382 |archive-url = https://web.archive.org/web/20190119174643/http://www.flightglobal.com/pdfarchive/view/1978/1978%20-%200749.html |archive-date = 19 January 2019 |url-access = subscription}}}}{{rp|1378}} It was the first Sikorsky helicopter designed purely for commercial rather than military use.{{r|Lambert|p=1377}} Despite this, Sikorsky planned to design it to conform with either the relevant [[Federal Aviation Regulations|FAR]] or military standards, whichever was more stringent, with the goal being the production of a rugged civil helicopter which could be used "off-the-shelf" for military purposes.<ref name="Janes 76-77">{{cite book |last1=Taylor |first1=John W. R. |title=Jane's All The World's Aircraft |date=1976 |publisher=Jane's Information Services |location=Croydon, England |page=392 |edition=1976-1977}}</ref> 

[[File:SikorskyS-76AC-GIMM.JPG|thumb|left|An early production Sikorsky S-76A owned by [[Canadian Helicopters]] and used as an [[air ambulance]]]] It was announced on 19 January 1975, before it had even been designed and Sikorsky began taking contracts; they would use these already signed operators for market research during development.<ref name="Janes 76-77"/>  The intended engine had also not yet been designed and was to be purpose-built alongside the S-76. Prototype construction began May 1976, with the first flight scheduled for May 1977, and deliveries scheduled to commence July 1978.<ref name="Janes 76-77"/> On {{date|13 March 1977}}, two months ahead of schedule, the prototype performed its [[maiden flight]].{{refn|name="Simpson"|{{Cite book |last = Simpson |first = Rod |url = {{GBurl|id=OfsLAAAACAAJ|page=505}} |title = Airlife's World Aircraft |date = 21 July 2001 |publisher = Airlife |isbn = 978-1-84037-115-4 |location = [[Shrewsbury]] |page = 505 |oclc = 980274514 |ol = 8915318M}}}} On {{date|21 November 1978}}, initial US [[Federal Aviation Administration]] [[Type certificate|type certification]] was granted, while the first customer delivery took place on {{date|27 February 1979}}.{{refn|name="AI"|{{Cite magazine |date = March 1980 |title = The Spirit of Sikorsky |magazine = [[Air International]] |volume = 18 |issue = 3 |pages = 111–116, 142–144 |issn = 0306-5634 |oclc = 907842170}}}}{{rp|142,144}} During late 1978, the S-76 was officially named "Spirit",{{r|AI|p=144}} however, this name was officially dropped by Sikorsky on {{date|9 October 1980}}, reportedly due to translation issues into some foreign languages.{{r|SikArchives_S-76}}{{refn|{{Citation |last = Kline |first = R. E. |title = Identification of S-76 Helicopter |date = 9 October 1980 |work = Sikorsky Internal Correspondence P-2462}}}}

The first production variant was the S-76A. Several improved models were produced over time. During 1982, the S-76 Mk II, equipped with more powerful engines and other refinements, was introduced. In 1987, production of the S-76B, powered by [[Pratt & Whitney Canada PT6|Pratt & Whitney Canada PT6B-36A]] and [[Pratt & Whitney Canada PT6|Pratt & Whitney Canada PT6B-36B]] engines; it was capable to attaining a maximum speed of {{convert|155|kn|km/h|0|abbr=on}} at sea level. By early 2001, in excess of 500 S-76s had been delivered.{{r|Simpson}}

During the early 2000s, the S-76C+ was the main version in production; it was equipped with twin [[Turbomeca Arriel 2S1]] engines with [[FADEC]] and a [[Honeywell]] [[Electronic Flight Instrument System|EFIS]] suite.{{r|Simpson}} This version also incorporated active noise suppression, vibration dampers and a [[composite material|composite]] main rotor. On {{date|3 January 2006}}, the S-76 C++ replaced earlier versions in production; it is powered by twin [[Turbomeca Arriel 2S2]] engines and incorporates an improved and quieter [[transmission (mechanics)|transmission]] as well as minor changes in the interior equipment and avionics. By January 2006, Sikorsky had secured 92 orders for this model.{{Citation needed|date=July 2022}}

Development of the follow-on S-76D was subject to four years of delays due to technical problems in expanding the flight envelope. On {{date|7 February 2009}}, the prototype conducted its first flight, and [[Type certificate|type certification]] was initially expected during 2011 while deliveries were forecast to start at the end of that year. The FAA issued certification on {{date|12 October 2012}}. Three prototypes were used in the certification program, with one aircraft used to certify the optional rotor electric ice-protection system. The "D" model is powered by {{convert|1050|hp|kW|0|abbr=on}} [[Pratt & Whitney Canada PW210S]] engines driving composite rotors and incorporates active vibration control. Performance is substantially improved with the added power, but initial certification retains the same {{convert|11700|lb|kg|0|abbr=on}} gross weight and maximum {{convert|155|kn|km/h|0|abbr=on}} cruise speed as earlier models.{{refn|{{Cite web |last = Trimble |first = Stephen |title = Sikorsky explains four-year delivery slip for S-76D |url = http://www.flightglobal.com/articles/2010/12/13/350865/sikorsky-explains-four-year-delivery-slip-for-s-76d.html |url-access = subscription |url-status = dead |archive-url = https://archive.today/20130123154430/http://www.flightglobal.com/news/articles/sikorsky-explains-four-year-delivery-slip-for-s-76d-350865/ |archive-date = 23 January 2013 |access-date = 25 April 2022 |website = [[FlightGlobal]] |language = en-UK}}}}{{refn|{{Cite magazine |date = 16 February 2009 |title = First Flight for Improved Sikorsky S-76 |magazine = [[Aviation Week & Space Technology]] |page = 15 |issn = 0005-2175}}}}{{refn|name="H1NE"|{{Cite web |date = 18 March 2021 |title = Type Certificate Data Sheet No. H1NE |url = https://drs.faa.gov/browse/excelExternalWindow/288F41E936FA17A58625869C005D7C93.0001 |access-date = 25 April 2022 |website = [[Federal Aviation Administration]]}}}}

The rate of manufacturing noticeably declined during the 2010s; only a dozen S-76s were delivered between 2016 and 2020.<ref name = "ponder ain2022">{{cite web |url = https://www.ainonline.com/aviation-news/general-aviation/2022-03-02/sikorsky-ponders-fate-s-76d |title = Sikorsky Ponders Fate of S-76D |publisher = ainonline.com |first = Mark |last = Huber |date = 2 March 2022}}</ref> During September 2013, it was announced that the Chinese manufacturer [[Changhe Aircraft Industries Corporation]] had been contracted to produce the S-76D airframe.{{refn|{{Cite web |title = Cooperative Program |url = http://www.changhe.com/english/eswhz/eswhz.htm |url-status = dead |archive-url = https://web.archive.org/web/20090906091347/http://www.changhe.com/english/eswhz/eswhz.htm |archive-date = 6 September 2009 |access-date = 25 April 2022 |website = [[Changhe Aircraft Industries Corporation]] |language = en-UK}}}} By 2022 April, in excess of 875 S-76s had reportedly been built.{{refn|name=Lockheed|{{Cite web |title = Sikorsky S-76 Helicopter |url = https://www.lockheedmartin.com/en-us/products/sikorsky-s-76-helicopter.html |url-status = live |archive-url = https://web.archive.org/web/20211127051215/https://www.lockheedmartin.com/en-us/products/sikorsky-s-76-helicopter.html |archive-date = 27 November 2021 |access-date = 25 April 2022 |website = [[Lockheed Martin]] |date = 17 August 2021 |language = en-US}}}}

During March 2022, Sikorsky announced that it had halted new orders for the S-76 while potential overseas manufacturing partners and [[licenced production|licensing]] opportunities were being evaluated. Reasons for the hold included decreasing sales volume, the high cost of supply and manufacturing, and the prohibitive costs associated with adapting the S-76 to meet increasing safety mandates. This move effectively ended production of the S-76 following the completion of the three orders that were outstanding, and represented a withdrawal by Sikorsky from the medium commercial helicopter market.{{refn|{{Cite web |last = Norris |first = Guy |date = 8 March 2022 |title = Sikorsky Puts S-76D On Ice, Seeks License Production Partner |url = https://aviationweek.com/business-aviation/sikorsky-puts-s-76d-ice-seeks-license-production-partner |url-access = registration |url-status = live |archive-url = https://web.archive.org/web/20220329212446/https://aviationweek.com/business-aviation/sikorsky-puts-s-76d-ice-seeks-license-production-partner |archive-date = 29 March 2022 |website = [[Aviation Week Network]] |location = [[Dallas]] |language = en-US}}}}<ref name = "vert loworders2022">{{cite web |url = https://verticalmag.com/news/sikorsky-stops-taking-s-76-orders-looks-to-license-production/ |title = Sikorsky stops taking S-76 orders; looks to license production |publisher = verticalmag.com |first = Oliver |last = Johnson |date = 9 March 2022}}</ref> Sikorsky has stated that it will continue to actively manufacture spare parts for the S-76 at its [[Connecticut]] facility.<ref name = "ponder ain2022"/>

==Design==
[[File:RAAF (Lloyd Off-Shore Helicopters) Sikorsky S-76A++ Point Cook Vabre.jpg|thumb|S-76A++ used for Search and Rescue at [[Royal Australian Air Force]] bases operated by CHC Helicopter]]

The S-76 is of a conventional configuration, with a four-bladed fully [[Helicopter rotor|articulated main rotor]] and a four-bladed anti-torque rotor on the port side of the tailboom. It is powered by a pair of [[turboshaft]] engines, which are located above the passenger cabin.{{refn|name="JAWA82"|{{Cite book |url = {{GBurl|id=prK3GAAACAAJ}} |title = Jane's All the World's Aircraft 1982–83 |date = December 1982 |publisher = [[Janes Information Services]] |isbn = 978-0-7106-0748-5 |editor-last = Taylor |editor-first = John W. R. |editor-link = John W. R. Taylor |location = [[London]] |pages = 476–477 |language = en-UK |issn = 0075-3017 |oclc = 496585133 |ol = 28152958M}}}} On the prototypes and initial production aircraft, these engines were [[Allison 250|Allison 250-C30]]s, a variant of the popular Allison 250 engine that was developed specially for the S-76l it had a single-stage [[centrifugal compressor]] instead of the multi-stage [[Axial compressor|axial]]/centrifugal compressor of earlier models of the engine, rated at {{convert|650|shp|kW|abbr=on}} for takeoff.{{r|AI|p=113–114}} These engines are connected to the main rotor by the main gearbox, a three-stage unit with a [[bull gear]] as its final stage, rather than the [[planetary gear]] that had been used by previous generations of Sikorsky helicopters. This arrangement has 30% fewer parts and lower costs than a more conventional design.{{r|SikArchives_S-76}}{{r|AI|p=114}}

The main rotor is furnished with a single piece aluminum hub fitted with [[elastomer]]ic bearings, which are designed not to require lubrication or any other kind of maintenance throughout its design life.{{r|SikArchives_S-76}}{{r|AI|p=114}} The main rotor blades have titanium [[Spar (aviation)|spars]] and incorporate a ten degree twist to provide an even loading when hovering, while they use a non-symmetrical [[airfoil]] section with a drooped [[leading edge]]. The rotor tips are tapered and swept back.{{r|Lambert|p=1378}}{{r|AI|p=114}} The rotor blades on later-build S-76s feature ice protection measures.<ref name = "ponder ain2022"/> The flight controls are [[Servomotor|servo]]-assisted and have a Stability Augmentation System fitted.{{r|AI|p=114,116}} A retractable [[tricycle landing gear|nosewheel undercarriage]] is fitted, the reduced [[Aerodynamic drag|drag]] from this arrangement is credited with increasing the S-76A's cruising speed by {{convert|6|kn|mph km/h}}. Emergency flotation gear can be fitted, which uses [[helium]]-filled bags to increase [[buoyancy]] in the event of a forced landing on water.{{r|Lambert|p=1377}}

The fuselage of the S-76 is made from both metal and [[composite material]]s; while the nose is composed of [[fiberglass]], the cabin area primarily employs a light [[alloy]] [[honeycomb structure]], the semi-[[monocoque]] tailboom is also constructed of light alloy.{{r|JAWA82}} A pair of pilots are typically seated in a side-by-side arrangement in the cockpit, situated ahead of the cabin, which can accommodate a further 12 passengers in three rows of four, or between four and eight passengers in a more luxurious executive seating configuration.{{r|AI|p=114}} Later models can be flown by a single pilot when provisioned with an appropriately configured cockpit.<ref name = "ponder ain2022"/> The S-76 was not originally designed with crashworthy fuel systems, leading to difficulties continuing production after an FAA requirement was implemented in April 2020.<ref name = "vert loworders2022"/>

==Operational history==
Early on in its commercial career, the S-76 became popular for offshore operations, such as to [[oil rig]]s.<ref name = "nytimes kobe2020"/> Numerous operators have either purchased or leased the type specifically to operate in this sector.<ref>{{cite web |url = https://www.business-standard.com/article/companies/pawan-hans-leases-6-sikorsky-s-76d-choppers-for-operations-122032401546_1.html |title = Pawan Hans leases 6 Sikorsky S-76D choppers for operations |publisher = business-standard.com |first = Ajai |last = Shukla |date = 24 March 2022}}</ref>

During 1982, the S-76A set multiple class records for range, climb, speed{{refn|name="FAI1845"|{{Cite web |title = Thomas F. Doyle Jr. (USA) (1845) |url = https://www.fai.org/record/1845 |url-status = live |archive-url = https://archive.today/20220425020912/https://www.fai.org/record/1845 |archive-date = 25 April 2022 |access-date = 25 April 2022 |website = [[Fédération Aéronautique Internationale]] |date = 10 October 2017 |language = en-UK}}}}{{refn|name="FAI11660"|{{Cite web |title = Thomas F. Doyle Jr. (USA) (11660) |url = https://www.fai.org/record/11660 |url-status = live |archive-url = https://archive.today/20220425021320/https://www.fai.org/record/11660 |archive-date = 25 April 2022 |access-date = 25 April 2022 |website = [[Fédération Aéronautique Internationale]] |date = 10 October 2017 |language = en-UK}}}}{{refn|name="FAI2262"|{{Cite web |title = Nicholas D. Lappos (USA) (2262) |url = https://www.fai.org/record/2262 |url-status = live |archive-url = https://archive.today/20220425022640/https://www.fai.org/record/2262 |archive-date = 25 April 2022 |access-date = 25 April 2022 |website = [[Fédération Aéronautique Internationale]] |date = 10 October 2017 |language=en-UK}} Others: 1827, 1839, 1844, 2067, 2068, 2069, 2070, 2071, 2072, 2073, 2074, 2100, 2222, 2223, 3415, 10273}} and ceiling.{{refn|name="FAI9947"|{{Cite web |title = Byron Graham Jr. (USA) (9947) |url=https://www.fai.org/record/9947 |url-status = live |archive-url=https://archive.today/20220425023812/https://www.fai.org/record/9947 |archive-date = 25 April 2022 |access-date = 25 April 2022 |website = [[Fédération Aéronautique Internationale]] |date = 10 October 2017 |language = en-UK}}}} In June 1995, the S-76 became the first helicopter to [[circumnavigate]] the world in an east-to-west direction, piloted by the Australian adventurer [[Dick Smith (entrepreneur)|Dick Smith]].{{refn|{{Cite book |last = Gott |first = Robert |url = {{GBurl|id=r66INwAACAAJ}} |title = Dick Smith: Australian Adventurer |date = 1998 |publisher = [[Heinemann (publisher)|Heinemann]] |isbn = 978-1-8639-1878-7 |series = Makers & Shakers |location = [[Port Melbourne]] |page = 46 |language = en-AU |oclc = 38819984}}}}

Several airlines have operated the S-76A on scheduled services, including [[Helijet Airways]] of [[Vancouver, British Columbia]], Canada.{{citation needed|date=July 2022}}

During the campaigning in the run up to the [[2005 United Kingdom general election]], both the [[Labour Party (UK)|Labour]] and the [[Conservative Party (UK)|Conservative]] parties dispensed with conventional 'battle buses' in favour of S-76 helicopters to quickly transport their leaders around the [[British Isles]].<ref>{{Cite web |last = Wheeler |first = Brian |date = 7 April 2005 |title = Which party is winning the air war? |url = http://news.bbc.co.uk/1/hi/uk_politics/vote_2005/frontpage/4417507.stm |url-status = live |archive-url = https://web.archive.org/web/20210125035203/http://news.bbc.co.uk/2/hi/uk_news/politics/vote_2005/frontpage/4417507.stm |archive-date = 25 January 2021 |access-date = 25 April 2022 |website = [[BBC News]] |language = en-UK}}</ref> According to Jason Lambert, Sikorsky's vice president of commercial and military systems, the S-76 had proven itself to be particularly popular amongst [[VIP]] customers.<ref name = "vert loworders2022"/> By 2020, according to Sikorsky, ten countries operated S-76s to carry their [[head of state|heads of state]].<ref name = "nytimes kobe2020"/>

S-76s have been periodically used to test new technologies and capabilities. The highly-modified S-76 SHADOW (Sikorsky Helicopter Advance Demonstrator of Operators Workload) was built to demonstrate its advanced cockpit for single-pilot operations and to study the human engineering interface between the pilot and the cockpit controls and displays; this was in aid of the [[RAH-66 Comanche]] armed reconnaissance helicopter programme.<ref name="TriArmy"/> During the 2010s, an S-76 was configured for autonomous operation and demonstrated this ability in June 2016, flying for a distance of around 30 miles (48&nbsp;km) with no human intervention beyond limited inputs made via a [[tablet computer]], the take off and landing phases were also performed autonomously.<ref>{{cite web |url = https://newatlas.com/sikorsky-s-76-helicopter-autonomous-flight/43650/ |title = Autonomous 30-mile flight for Sikorsky S-76 commercial helicopter |publisher = newatlas.com |first = Colin |last = Jeffrey |date = 3 June 2016}}</ref>

During the 2010s, many S-76 operators elected to replace the type with newer medium-lift rotorcraft, such as the [[AgustaWestland AW139]].<ref name = "vert loworders2022"/> In early 2020, it was observed that, while the S-76D was no longer compliant with FAA regulations to permit its sale to US-based customers, sales were still possible to several other countries.<ref name = "ponder ain2022"/>

==Variants==
===Civil===
[[File:SAR Helicopter.jpg|thumb|S-76C [[search and rescue]] helicopter operated by [[Norrlandsflyg]]]]

*'''{{visible anchor|S-76A}}'''
: Original production version, powered by two {{convert|650|shp|kW|abbr=on}} [[Rolls-Royce (Allison) 250-C30]] turboshaft engines. Large number modified to S-76A+, A++, C, and C+. 284 manufactured.
*'''S-76A Utility'''
: Utility transport version, equipped with sliding doors and a strengthened floor.
*'''S-76A+'''
: Unsold S-76s were fitted with two [[Turbomeca Arriel 1S]] turboshaft engines. 17 manufactured.
*'''{{visible anchor|S-76A++}}'''
: S-76 helicopters fitted with two [[Turbomeca Arriel 1S1]] turboshaft engines.
*'''S-76A Mk II'''
: Improved all-weather transport version, fitted with more powerful engines, and other detail improvements.
*'''{{visible anchor|S-76B}}'''
: Powered by two [[Pratt & Whitney Canada PT6B-36A]] or [[Pratt & Whitney Canada PT6B-36B]] turboshaft engines. 101 built.
*'''{{visible anchor|S-76C}}'''
: Powered by two 539-kW (981-shp) [[Turbomeca Arriel 1S1]] turboshaft engines. 43 manufactured.
*'''{{visible anchor|S-76C+}}'''
: Uprated version, fitted with improved [[Turbomeca Arriel 2S1]] turboshafts with FADEC. 35 manufactured.
*'''S-76C++'''
: Turbomeca Arriel 2S2
*'''{{visible anchor|S-76D}}'''
: Powered by two [[Pratt & Whitney Canada PW210S]]. Also features a [[Thales Group|Thales]] Topdeck avionics suite and improved noise signature over all previous variants.{{refn|{{Cite web |last = Huber |first = Mark |date = 3 July 2012 |title = Sikorsky S-76D |url = https://www.bjtonline.com/business-jet-news/sikorsky-s-76d |url-status = live |archive-url = https://web.archive.org/web/20211026132746/https://www.bjtonline.com/business-jet-news/sikorsky-s-76d |archive-date = 26 October 2021 |access-date = 3 July 2018 |website = [[Business Jet Traveler]] |language = en-US |issn = 1554-1339}} }}<ref>{{cite web |url = https://onboard.thalesgroup.com/thales-develops-new-innovations-for-s-76d-helicopter/ |title = Thales develops new innovations for S-76D helicopter |publisher = [[Thales Group|Thales]] |date = 12 January 2011}}</ref>

===Military===
;AUH-76 "Dragon Lady"
:Armed utility transport version of the S-76 Mk. II. Delivered in 1983 to the [[Philippine Air Force]]. Initially armed with two fixed forward firing M134 7.62 mm minigun (one each side) and a 7-round rocket pod on each side and radar altimeters. When M134 became unserviceable, the guns were replaced with M2P Machine Guns.<ref>{{cite web | url=https://15thstrikewing.mil.ph/15swhistory.html | title=15SW History }}</ref><ref>{{cite web | url=https://www.scramble.nl/planning/orbats/philippines/philippine-air-force-history | title=Orbats }}</ref>
;H-76 Eagle
:A militarised variant suitable for naval operations, based on the S-76B, it was announced during 1985 but none were ever sold.
;H.LL.4
:({{langx|th|ฮ.ลล.๔}}) [[Royal Thai Armed Forces]] designation for the S-76B.<ref>{{Cite web |title=Thai Military Aircraft Designations |url=https://designation-systems.net/non-us/thailand.html |access-date=2025-03-20 |website=designation-systems.net}}</ref>

===Experimental derivatives===
[[File:S76shadow.jpg|thumb|Sikorsky S-76 SHADOW]]
;Sikorsky S-75: The Advanced Composite Airframe Program (ACAP) was an all-composite Sikorsky early LHX proof of concept aircraft. Designated [[Sikorsky S-75|S-75]], it mated a new [[Composite material|composite]] airframe with S-76 engines, rotors and powertrain components.{{refn|{{Cite book |last = Harding |first = Stephen |url = https://archive.org/details/usarmyaircraftsi0000hard_c0o7 |title = U.S. Army Aircraft Since 1947: An Illustrated Reference |date = 1997 |publisher = [[Schiffer Publishing]] |isbn = 978-0-7643-0190-2 |location = [[Atglen, Pennsylvania|Atglen]] |page = 251 |chapter = Sikorsky S-75 ACAP |lccn = 96069996 |oclc = 464218057 |ol = 1016558M |url-access = registration |via = [[Internet Archive]]}}}}
;Sikorsky S-76 SHADOW: Boeing-Sikorsky MANPRINT study. The original concept of the LHX program was to produce a one-man helicopter that could do more than a two-man aircraft. The Sikorsky (S-76) Helicopter Advance Demonstrator of Operators Workload (SHADOW) had a single-pilot advanced cockpit grafted to its nose. The purpose was to study the MANPRINT or human engineering interface between the pilot and the cockpit controls and displays. The cockpit was the prototype of a single-pilot cockpit designed for use on the prototype [[RAH-66 Comanche]] armed reconnaissance helicopter. The cockpit was designed so sensors would feed data to the pilot through helmet-mounted displays. The MANPRINT study determined that single-pilot operation of the Comanche was unsafe, and would result in pilot overload. As result of this study, the Comanche was designed to be operated by a crew of two.<ref name="TriArmy">{{Cite web |date = 5 October 2005 |title = Historic US Army Helicopters |url = http://tri.army.mil/LC/CS/csa/aahist3.htm#LHX |url-status = dead |archive-url = https://web.archive.org/web/20090627075327/http://tri.army.mil/LC/cs/Csa/aahist3.htm |archive-date = 27 June 2009 |access-date = 2 July 2011 |website = US Army TACOM-RI |language = en-US}}</ref>

==Operators==
<!--READ FIRST: This section is for cited entries only. Please do not add entries into this list without a citation from a reliable source. All entries without a citation will be removed. Thank you.-->

===Civil===
The S-76 is in civil service around the world with airlines, corporations, hospitals, and government operators. The world's largest civilian fleet is the 79 Sikorsky S-76 helicopters operated by [[CHC Helicopter|CHC Helicopter Corporation]].{{r|CHCFleet}}

===Current military and government===
[[File:S-76C (5082863481).jpg|thumb|An S-76C of the [[Spanish Air Force]]]]
[[File:Royal Thai Navy Sikorksy S-76B.JPEG|thumb|Sikorsky S-76B of the [[Royal Thai Navy]] ]]
;{{ARG}}
* [[Argentine Air Force]]{{refn|{{Cite web |title = Fuerza Aerea Argentina VIP S-76 |url = https://www.helis.com/database/modelorg/FAA-S-76/ |url-status = live |archive-url = https://web.archive.org/web/20210225102957/https://www.helis.com/database/modelorg/FAA-S-76/ |archive-date = 25 February 2021 |access-date = 25 April 2022 |website = helis.com |language = en-US}}}}
'''{{CAN}}'''

* Emergency Health Services [[LifeFlight (Nova Scotia)]]
;{{CHN}}
;[[Ministry of Transport of the People's Republic of China|Ministry of Transport]]{{refn|{{Cite press release |title = Ministry of Transport Signs for Four S-76D Helicopters for Search and Rescue Mission in China |date = 5 March 2013 |url = http://www.sikorsky.com/pages/AboutSikorsky/PressreleaseDetails.aspx?pressreleaseid=109 |language = en-US |access-date = 27 January 2020 |url-status = dead |archive-url = https://web.archive.org/web/20160304040408/http://www.sikorsky.com/pages/AboutSikorsky/PressreleaseDetails.aspx?pressreleaseid=109 |archive-date = 4 March 2016 |website = [[Lockheed Martin]]}}}}
{{flag|ISR}}

* Magen David Adom [https://www.mdais.org/en/news/110623 (National EMS service)]
;{{JAP}}
* [[Japan Coast Guard]]{{refn|{{Cite web |date = 14 February 2012 |title = Japanese coast guard orders helicopters |url = http://www.upi.com/Business_News/Security-Industry/2012/02/14/Japanese-coast-guard-orders-helicopters/UPI-72851329246317/ |url-status = live |archive-url = https://web.archive.org/web/20191231113050/https://www.upi.com/Defense-News/2012/02/14/Japanese-coast-guard-orders-helicopters/72851329246317/ |archive-date = 31 December 2019 |access-date = 21 February 2013 |website = [[United Press International]] |location = [[Singapore]]}}}}{{refn|{{Cite web |title = Sikorsky S-76D begins service with Japan Coast Guard |url = https://www.aerospacemanufacturinganddesign.com/article/sikorsky-s76d-helicopter-japan-service-030315/ |access-date = 29 July 2022 |website = aerospacemanufacturinganddesign.com |date = 3 March 2015 |language = en-US}}}}
;{{JOR}}
* [[Royal Jordanian Air Force]]{{refn|{{Cite web |title = Aircraft |url = http://www.rjaf.mil.jo/index.php/en/en/equipment/aircraft.html |url-status = dead |archive-url = https://web.archive.org/web/20161024092720/http://www.rjaf.mil.jo:80/index.php/en/en/equipment/aircraft.html |archive-date = 24 October 2016 |access-date = 21 February 2013 |publisher = [[Royal Jordanian Air Force]] |language = en-US}}}}
;{{PHI}}

* [[Philippine Air Force]] - 9 Units active in 2024 out of 17 delivered.<ref name="World Air Forces 2025">{{cite web |url= https://www.flightglobal.com/download?ac=106507 |title= World Air Forces 2025 |publisher= Flightglobal Insight |year= 2024 |access-date= 11 December 2024}}</ref><ref>https://www.forecastinternational.com/archive/disp_old_pdf.cfm?ARC_ID=1042</ref>
;{{ROC}}
* [[National Airborne Service Corps]]{{refn |{{Cite web |title = S-76B |url = http://www.nasc.gov.tw/eng/airplane.aspx?sn=6 |url-status = dead |archive-url = https://archive.today/20120805065534/http://www.nasc.gov.tw/eng/airplane.aspx?sn=6 |archive-date = 5 August 2012 |access-date = 25 April 2022 |website = [[National Airborne Service Corps]] |language = en}}}}
;{{SAU}}
* [[Ministry of Interior (Saudi Arabia)|Ministry of Interior]]{{refn|{{Cite press release |title = Saudi Arabia's Ministry of Interior Signs Contract for 12 S-76D Helicopters |date = 21 July 2010 |url = http://www.sikorsky.com/About+Sikorsky/News/Press+Details?pressvcmid=86e45aabed0f9210VgnVCM1000004f62529fRCRD |language = en-US |access-date = 21 February 2013 |url-status = dead |archive-url = https://web.archive.org/web/20141006073049/https://www.sikorsky.com/About+Sikorsky/News/Press+Details?pressvcmid=86e45aabed0f9210VgnVCM1000004f62529fRCRD |archive-date = 6 October 2014 |website = [[Sikorsky Aircraft]]}}}}
;{{SRB}}
* [[Police of Serbia]]{{refn|{{Cite web |date = 11 October 2005 |orig-date = 25 September 2005 |title = Serbian Police Aviation |url = http://www.aeroflight.co.uk/waf/yugo/serbia/pol/serbia-police-home.htm |url-status = live |archive-url = https://web.archive.org/web/20220311043851/http://www.aeroflight.co.uk/waf/yugo/serbia/pol/serbia-police-home.htm |archive-date = 11 March 2022 |access-date = 18 July 2012 |publisher = Aeroflight |language = en-UK}}}}
;{{ESP}}
* [[Spanish Air and Space Force]] - 8 Units<ref name="World Air Forces 2025"/>
* Galician Coast Guard{{refn|{{Cite news |last = Llera |first = Luis Carlos |date = 11 August 2010 |title = Los ángeles del mar de Galicia han salvado ya a 1.321 náufragos |language = es |trans-title = The angels of the Galician sea have already saved 1,321 castaways |work = [[La Voz de Galicia]] |url = http://www.lavozdegalicia.es/vigo/2010/08/11/0003_8662218.htm |url-status=live |access-date = 3 July 2018 |archive-url = https://archive.today/20220425055721/https://www.lavozdegalicia.es/noticia/vigo/2010/08/11/angeles-mar-galicia-salvado-1321-naufragos/0003_8662218.htm |archive-date = 25 April 2022}}}}{{refn|{{Cite web |last = Luaces |first = Antón |title = Pesca tramita la adquisición del tercer helicóptero de Gardacostas |trans-title = Fishing is in progress for the acquisition of a third helicopter from Gardacostas |url = http://www.laopinioncoruna.es/secciones/noticia.jsp?pRef=2009012200_11_254142__Mar-Pesca-tramita-adquisicion-tercer-helicoptero-Gardacostas |url-status = dead |archive-url = https://archive.today/20120629184351/http://www.laopinioncoruna.es/secciones/noticia.jsp?pRef=2009012200_11_254142__Mar-Pesca-tramita-adquisicion-tercer-helicoptero-Gardacostas |archive-date = 29 June 2012 |access-date = 3 July 2018 |website = La Opinión a Coruña |language = es}}}}
;{{THA}}
* [[Royal Thai Navy]] - 4 Units.<ref name="World Air Forces 2025"/>
;{{Flag|United Kingdom}}
* [[Air transport of the Royal Family and government of the United Kingdom#The King.27s Helicopter Flight .28TQHF.29|The King's Helicopter Flight]]{{refn|{{Cite web |title = Air Travel |url = http://www.royal.gov.uk/TheRoyalHousehold/Transport/Royalairtravel.aspx |url-status = dead |archive-url = https://archive.today/20121223200736/http://www.royal.gov.uk/TheRoyalHousehold/Transport/Royalairtravel.aspx |archive-date = 23 December 2012 |access-date = 25 April 2022 |website = The Royal Household |language = en-UK}}}}

===Former military and government===
;{{AUS}}
* [[Royal Australian Air Force]] (replaced by the [[AgustaWestland AW139]] during the late 2010s){{refn|{{Cite web |date = 11 March 2019 |title = CHC introduces half dozen AW139s for RAAF work |url = https://www.businessairnews.com/mag_story.html?ident=15291 |url-status = live |archive-url = https://web.archive.org/web/20211226021259/https://www.businessairnews.com/mag_story.html?ident=15291 |archive-date = 26 December 2021 |access-date = 17 June 2019 |website = Business Air News |language = en-US}}}}
;{{CAN}}
* [[Ornge|Ornge / Ontario Air Ambulance Corp.]] (originally owned by [[Canadian Helicopters]] and eventually o/o by Ornge and replaced by AW139 in 2012). 1 donated to Centennial College in Toronto (C-GIMZ) and 1 to Canadian Aviation and Space Museum (C-GIMB).
;{{HON}}
* [[Honduran Air Force]]<ref>{{Cite magazine |date = 28 November 1987 |title = World's Air Forces |url=http://www.flightglobal.com/pdfarchive/view/1987/1987%20-%202510.html |url-status = dead |magazine = [[Flight International]] |language = en-UK |page = 60 |archive-url = https://web.archive.org/web/20190119174656/http://www.flightglobal.com/pdfarchive/view/1987/1987%20-%202510.html |archive-date = 19 January 2019 |access-date = 21 February 2013}}</ref>
;{{flag|Hong Kong|colonial}}
* [[Royal Hong Kong Auxiliary Air Force]]{{refn|{{Cite book |last = Royal Air Force Historical Society |url = https://www.rafmuseum.org.uk/documents/research/RAF-Historical-Society-Journals/Journal-29A-Seminar-Reserve-Auxiliary-Forces.pdf |title = Royal Air Force Reserve and Auxiliary Forces |date = 2003 |isbn = 978-0-9530-3451-2 |pages = 173–176 |publisher = Royal Air Force Historical Society |access-date = 11 January 2021 |archive-url = https://web.archive.org/web/20151016172859/https://www.rafmuseum.org.uk/documents/research/RAF-Historical-Society-Journals/Journal-29A-Seminar-Reserve-Auxiliary-Forces.pdf |archive-date = 16 October 2015 |url-status = live}}}}
* [[Government Flying Service (Hong Kong)|Government Flying Service]]{{refn|{{Cite web |title = Civilian Rescue |url=http://www.sikorskyarchives.com/Civilian_Rescue.php |url-status = live |archive-url = https://web.archive.org/web/20220129182342/https://www.sikorskyarchives.com/Civilian_Rescue.php |archive-date = 29 January 2022 |access-date = 21 February 2013 |website = Sikorsky Archives |language = en-US}}}}
;{{ISL}}
* [[Icelandic Coast Guard]]<ref>{{cite news |title = Rán heitir nýja þyrla gæzlunnar - væntanleg til landsins eftir viku |url = https://timarit.is/page/1531440 |access-date = 13 June 2022 |work = [[Morgunblaðið]] |date = 17 September 1980 |language = Icelandic |via = [[Tímarit.is]]}} {{open access}}</ref>

==Accidents==
* On 17 July 2002, S-76A ''G-BJVX'', operated by [[Bristow Helicopters]], [[2002 Bristow Helicopters Sikorsky S-76A crash|crashed into the North Sea]] due to the failure of a main rotor blade. The operator temporarily halted all helicopter flights over the [[North Sea]] until operations resumed on 3 September 2002.<ref>{{cite web |url = http://news.bbc.co.uk/1/hi/england/2232812.stm  |title = Rig flights resume after fatal crash |publisher = [[BBC News]] |date = 3 September 2002}}</ref>
* On 10 August 2005, a Sikorsky S-76C+ flying [[Copterline Flight 103]] crashed into [[Tallinn Bay]] in the [[Gulf of Finland]]. The cause was a failure of the hydraulic flight control system.<ref>{{cite web |url = http://www.mkm.ee/doc.php?322962 |title = Final Report. Copterline Oy. Sikorsky S-76C+. In Tallinn Bay, Estonia on 10 August 2005 |access-date = 11 August 2008 |date = 6 August 2008 |format = PDF |publisher = Aircraft Accident Investigation Commission, [[Ministry of Economic Affairs and Communications]], Estonia |language = en |archive-url = https://web.archive.org/web/20081115141351/http://www.mkm.ee/doc.php?322962 |archive-date = 15 November 2008 |url-status = dead |df = dmy-all }}</ref>
* On 31 May 2013, an S-76A air ambulance, operated by [[Ornge]], [[Ornge#2013 Ornge air ambulance Moosonee crash|crashed near Moosonee Airport]], [[Canada]]. The cause was inadequate training of pilots for night-time operations.<ref>{{cite news |url = http://www.cbc.ca/news/canada/toronto/ornge-ontario-s-air-ambulance-service-faces-17-labour-code-charges-1.2659882 |title = Ornge, Ontario's air ambulance service, faces 17 labour code charges - Toronto - CBC News |publisher = Cbc.ca |date = 31 May 2013 |access-date = 30 May 2014}}</ref>
* On 10 March 2017, S-76C++ ''TC-HEZ'', operated by Swan Aviation, [[Swan Aviation Sikorsky S-76 crash|crashed during a private charter flight]] in [[Istanbul]], [[Turkey]]. The cause is unknown, but poor visibility conditions were present at the time.<ref>[http://www.internethaber.com/eczacibasi-helikopter-kazasi-nedeni-kusku-yaratan-detay-foto-galerisi-1760404.htm] {{Webarchive|url=https://web.archive.org/web/20170413071053/http://www.internethaber.com/eczacibasi-helikopter-kazasi-nedeni-kusku-yaratan-detay-foto-galerisi-1760404.htm|date=13 April 2017}} Eczacıbaşı helikopter kazası nedeni kuşku yaratan detay {{in lang|tr}}</ref>
* On 26 January 2020, S-76B ''N72EX'' [[2020 Calabasas helicopter crash|crashed in Calabasas, California]], killing all nine occupants, including the retired professional basketball player [[Kobe Bryant]] and his daughter [[Gianna Bryant|Gianna]].<ref name = "nytimes kobe2020">{{cite web |url = https://www.nytimes.com/2020/01/27/us/kobe-bryant-sikorsky-helicopter.html |title = What We Know About the Helicopter in Kobe Bryant's Death |work = [[The New York Times]] |first = Patrick J. |last = Lyons |date = 27 January 2020}}</ref> The cause was determined to be the pilot Ara Zobayan experiencing spatial disorientation due to heavy fog, as well as pilot error.<ref>{{cite web|last1=Melley|first1=Brian|last2=Dazio|first2=Stefanie|title=Kobe Bryant helicopter crash caused by pilot's poor decision making and disorientation, NTSB says|url=https://www.latimes.com/california/story/2021-02-09/pilot-in-kobe-bryant-helicopter-crash-disoriented-ntsb-says|website=[[Los Angeles Times]]|access-date=May 15, 2024|date=February 9, 2021}}</ref><ref>{{cite web|last1=Melley|first1=Brian|last2=Dazio|first2=Stefanie|title=Investigators report Kobe Bryant's pilot got disoriented in clouds|url=https://www.nba.com/news/investigators-report-bryants-pilot-got-disoriented-in-clouds|website=nba.com|access-date=May 15, 2024|date=February 9, 2021}}</ref>
* On 16 September 2020, an S-76A air ambulance of the [[Philippine Air Force]] crashed in [[Basilan]] Province in [[Sulu Archipelago|Southern Philippines]] during bad weather conditions, killing all four military crew members onboard.<ref>{{cite web |url = https://www.abs-cbn.com/news/09/16/20/4-killed-as-military-chopper-crashes-in-basilan-amid-bad-weather |title = 4 killed as military chopper crashes in Basilan amid bad weather |publisher = ABS-CBN News|date = 16 September 2020}}</ref><ref>{{cite web |url = https://www.pna.gov.ph/articles/1115706 |title = PAF grounds Sikorsky choppers for inspection after Basilan crash |work = Philippine News Agency|date = 17 September 2020}}</ref>
* On 26 March 2025, an S-76 firefighting helicopter crashed while responding to [[March 2025 South Korea wildfires|wildfires in Uiseong]], killing the pilot.<ref>{{Cite news |date=March 26, 2025 |title=Pilot killed as firefighting helicopter crashes in Uiseong |url=https://www.koreatimes.co.kr/www/nation/2025/03/281_395005.html |access-date=March 26, 2025 |work=The Korea Times}}</ref>

==Specifications (Sikorsky S-76C++)==
[[File:S-76B Paris Air Show 1991.jpg|thumb|An S-76B prototype helicopter modified as a [[Fenestron|fantail]] demonstrator for the [[Boeing-Sikorsky RAH-66 Comanche|RAH-66 program]] at the 1991 Paris Air Show|alt=]]

{{Aircraft specs
|ref= ''Sikorsky''{{refn|{{Cite web |date = 2007 |title = S-76 Technical Information: S-76C++ Helicopter, Executive Transport mission |url = http://www.sikorsky.com/StaticFiles/Sikorsky/Assets/Attachments/Mission%20Downloads/S76-084_C++_TI_ExecTrans.pdf |url-status = dead |archive-url = https://web.archive.org/web/20121202090022/http://www.sikorsky.com/StaticFiles/Sikorsky/Assets/Attachments/Mission%20Downloads/S76-084_C++_TI_ExecTrans.pdf |archive-date = 2 December 2012 |access-date = 12 August 2012 |website = [[Sikorsky Aircraft]] |language = en-US}}}}
|prime units?= kts<!-- imp or kts first for US aircraft, and UK aircraft pre-metrification, met(ric) first for all others. You MUST choose a format, or no specifications will show -->
<!--
        General characteristics
-->
|genhide=
|crew= two{{efn|Can operate with just one pilot in [[Visual flight rules|VFR]] conditions and in [[Instrument flight rules|IFR]] when suitably equipped}}
|capacity= 13 passengers
|length m= 16
|length ft= 52
|length in= 6
|length note= from tip of main rotor to tip of tail rotor
|span m=
|span ft=
|span in=
|span note=
|width m= 3.05
|width ft= 10
|width in= 0
|width note= at horizontal stabilizer
|height m= 4.42
|height ft= 14
|height in= 6
|height note= to tip of tail rotor
|airfoil=
|empty weight kg= 3,177
|empty weight lb= 7,005
|empty weight note= in utility configuration
|gross weight kg= 5,306
|gross weight lb= 11,700
|gross weight note=
|fuel capacity= 281 US gallons (1,064 liters), with 50 or 102 US gallons (189 or 386 liters) available in extra auxiliary tanks
|more general=
<!--
        Powerplant
-->
|eng1 number= 2
|eng1 name= [[Turbomeca Arriel 2S2]]
|eng1 type= turboshaft
|eng1 kw=<!-- prop engines -->
|eng1 hp=<!-- prop engines -->
|eng1 shp= 922<!-- prop engines -->
|rot number= 1
|rot dia m= 13.41
|rot dia ft= 44
|rot dia in= 0
|rot area sqm=<!-- helicopters -->
|rot area sqft=<!-- helicopters -->
|rot area note=
<!--
        Performance
-->
|perfhide=
|max speed kmh= 287
|max speed mph= 178
|max speed kts= 155
|max speed note= at maximum takeoff weight at sea level in standard atmospheric conditions
|cruise speed kmh= 287
|cruise speed mph= 178
|cruise speed kts= 155
|cruise speed note= maximum cruise speed is the same as maximum speed
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range nmi= 411
|range note=no reserves, at long-range cruise speed at 4,000 ft altitude
|endurance=<!-- if range unknown -->
|ceiling m=
|ceiling ft= 13,800
|ceiling note=
|g limits=<!-- aerobatic -->
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|lift to drag=
|disk loading kg/m2=
|disk loading lb/sqft=
|disk loading note=
|fuel consumption kg/km=
|fuel consumption lb/mi=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
* [[Honeywell]] four-tube EFIS and Collins Proline II avionics suite
* Four-axis fully coupled [[autopilot]]
* Integrated Instrument Display System (IIDS)
* Honeywell [[ground proximity warning system]]
* Honeywell Primus [[weather radar]]
* Dual [[Airband|comm/nav radios]]
* [[Automatic direction finder]]
* Dual [[attitude and heading reference system]] and [[air data computer]]s
* [[Radio altimeter]]
* [[Transponder (aviation)|Mode C transponder]]
* Dual [[VHF omnidirectional range]] (VOR) and [[Instrument landing system]] (ILS)
* [[Distance measuring equipment]]
* [[Cockpit voice recorder]]
}}

==See also==
{{Portal|Aviation}}
{{aircontent
|see also=
|related=
* [[Sikorsky S-70]]
* [[Sikorsky S-75]]
|similar aircraft=
* [[AgustaWestland AW109]]
* [[Airbus Helicopters H160]]
* [[Bell 222/230]]
* [[Bell 430]]
* [[Eurocopter AS365 Dauphin]]
* [[HAL Dhruv]]
* [[HAL Rudra]]
* [[Kamov Ka-60]]
* [[MBB Bo 105]]
* [[MBB/Kawasaki BK 117]]
* [[TAI T625 Gökbey]] 
|lists=
* [[List of rotorcraft]]
}}

==Notes==
{{notelist}}

==References==
===Citations===
{{Reflist}}

===Further reading===
* {{Cite book |last = Apostolo |first = Giorgio |url = {{GBurl|id=wY6pPAAACAAJ|page=90}} |title = The Illustrated Encyclopedia of Helicopters |date = 1984 |publisher = Bonanza Books |isbn = 978-0-5174-3935-7 |location = [[New York City]] |page = 90 |oclc = 873072916 |ol = 7686933M}}
* {{Cite magazine |last = Elliott |first = Bryn |date = May–June 1999 |title = On the Beat: The First 60 Years of Britain's Air Police, Part Two |magazine = [[Air Enthusiast]] |issue = 81 |pages = 64–69 |issn = 0143-5450}}

==External links==
{{Commons category|Sikorsky S-76}}
* {{Official website|https://www.lockheedmartin.com/en-us/products/sikorsky-s-76-helicopter.html}}
* {{Cite web |title = S-76 Type Certificate Data Sheet |url = http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/96A6C4412BE7C0D7862577A70071350E?OpenDocument&Highlight=sikorsky |url-status = dead |archive-url = https://web.archive.org/web/20171209152217/http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/96A6C4412BE7C0D7862577A70071350E?OpenDocument&Highlight=sikorsky |archive-date = 9 December 2017 |access-date = 25 April 2022 |publisher = [[Federal Aviation Administration]]}}
* {{Cite web |date = 1 April 2022 |title = Rotorcraft Production List for Sikorsky S-76 |url = http://www.rotorspot.nl/product/s76.php |url-status = live |archive-url = https://archive.today/20220425070052/http://www.rotorspot.nl/product/s76.php |archive-date = 25 April 2022 |access-date = 25 April 2022 |website = Rotorspot |language = en-US}}

{{Sikorsky Aircraft}}
{{Spanish helicopters}}
{{Thai helicopter designations}}

{{Authority control}}

[[Category:1970s United States civil utility aircraft]]
[[Category:1970s United States helicopters]]
[[Category:Aircraft first flown in 1977]]
[[Category:Sikorsky aircraft|S-076]]
[[Category:Twin-turbine helicopters]]