Editing Grumman C-2 Greyhound

{{Short description|U.S. military cargo aircraft (1966-present)}}
{{Use dmy dates|date=September 2019}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout, and guidelines. -->
{{Infobox aircraft
 |name= C-2 Greyhound
 |image= File:C-2A NP-2000 VRC-40 in flight 2009 (modified).jpg
 |caption= A U.S. Navy C-2A(R) Greyhound of fleet logistics support squadron [[VRC-40]] ''Rawhides''
 |type= [[Naval aviation|Carrier-capable]] [[cargo aircraft|transport]] / [[Carrier onboard delivery]]
 |national_origin= United States
 |manufacturer= [[Grumman]]<br />[[Northrop Grumman]]
 |first_flight= 18 November 1964
 |introduction= 1966
 |retired= <!-- C-2A: 1987 - Hidden to avoid confused with current C-2A (Reprocured)-->
 |status= C-2A: Retired <br />C-2A(R): In service
 |primary_user= [[United States Navy]]
 |more_users= <!-- Limited to three "more users" total. Please separate with <br />. -->
 |produced= C-2A: 1965–1968 <br />C-2A(R): 1985–1989
 |number_built= C-2A: 17 <br />C-2A(R): 39
 |developed_from= [[Northrop Grumman E-2 Hawkeye]]
 |variants=
}}

The '''Grumman C-2 Greyhound''' is a twin-engine, [[high-wing]] [[cargo aircraft]] designed to carry supplies, mail, and passengers to and from [[List of United States Navy aircraft carriers|aircraft carrier]]s of the [[United States Navy]]. Its primary mission is [[carrier onboard delivery]] (COD). The aircraft provides critical logistics support to carrier strike groups. The aircraft is mainly used to transport high-priority cargo such as jet engines and special stores, mail, and passengers between carriers and shore bases.<ref>{{Cite web|url=https://www.thedrive.com/the-war-zone/16535/confessions-of-a-c-2-greyhound-carrier-onboard-delivery-pilot|title=Confessions Of A C-2 Greyhound Carrier Onboard Delivery Pilot|first1=James|last1=Wallace|first2=Tyler|last2=Rogoway|date=29 November 2017|website=The Drive}}</ref>

Prototype C-2s first flew in 1964, and production followed the next year. The initial Greyhound aircraft were overhauled in 1973. In 1984, more C-2As were ordered under designation Reprocured C-2A or C-2A(R). In 2010, all C-2A(R) aircraft received updated propellers (from four to eight blades) and navigational updates ([[glass cockpit]]). The U.S. Navy is to start replacing the remaining 27 C-2As with 38 [[Bell Boeing V-22 Osprey#Operational history|Bell Boeing CMV-22Bs Osprey]] tiltrotors in 2020, with full fielding in 2028.

==Design and development==
===Origins===
{{More citations needed section|date=April 2008}}
The C-2 Greyhound, a derivative of the [[Northrop Grumman E-2 Hawkeye]], shares the [[Folding wing|folding "Sto-Wings"]] and engines with the E-2, but has a widened fuselage with a rear loading ramp. The first of two prototypes flew in 1964. After successful testing, Grumman began production of the aircraft in 1965. The C-2 replaced the piston-engine [[Grumman C-1 Trader]] in the carrier onboard delivery (COD) role. The original C-2A aircraft were overhauled to extend their operational life in 1973.<ref>[http://www.navy.mil/navydata/fact_display.asp?cid=1100&ct=1&tid=100 Fact File: C-2A Greyhound logistics aircraft] {{Webarchive|url=https://web.archive.org/web/20170202193310/http://www.navy.mil/navydata/fact_display.asp?cid=1100&ct=1&tid=100 |date=2 February 2017}}. U.S. Navy, Retrieved 27 January 2017.</ref>

Powered by two [[Allison T56]] turboprop engines, the C-2A can deliver up to 10,000 pounds (4,500&nbsp;kg) of cargo or up to 28 passengers, and is normally configured for a cargo/passenger mix. It can also carry litter patients in [[Medical evacuation|medical-evacuation missions]]. A cage system or transport stand restrains cargo during carrier launch and landing accelerations to prevent weight redistribution, which might adversely affect in-flight stability. The large aft cargo ramp and door and a powered winch allow straight-in rear cargo loading and unloading for fast turnaround. The Greyhound's ability to airdrop supplies and personnel, fold its wings, and generate power for engine starting and other uses provide greater operational versatility. Some parts are shared with the E-2 Hawkeye and the [[Grumman A-6 Intruder]] to ease logistics support.<ref name=rhp>{{cite journal |last=Purnell |first=Richard H. |year=1986 |title=A New Old COD |journal=Proceedings |volume=112 |issue=1 |pages=108–111 |publisher=[[United States Naval Institute]]}}</ref>

[[File:C-2A ramp DN-ST-86-02080.JPEG|thumb|A C-2A taxis prior to takeoff on a flight to {{USS|John F. Kennedy|CV-67|6}} in February 1984. This was the first Greyhound delivered in 1966.]]

The C-2 has four vertical stabilizers, of which three are fitted with rudders. A single vertical stabilizer large enough for adequate directional control would have made the aircraft too tall to fit on an aircraft carrier hangar deck. The four-stabilizer configuration has the advantage of placing the outboard rudder surfaces directly in line with the propeller wash, providing effective yaw control down to low airspeeds, such as during takeoff and landing. The inner-left stabilizer lacks a rudder, and has been called the "executive tail", as it has nothing to do compared to the other three.<ref name="Grumman C-2 Greyhound">[http://tailspintopics.blogspot.jp/2011/05/grumman-c-2-greyound.html Grumman C-2 Greyhound] {{Webarchive|url=https://web.archive.org/web/20170202075923/http://tailspintopics.blogspot.jp/2011/05/grumman-c-2-greyound.html |date=2 February 2017}} Retrieved 27 January 2017.</ref> A single C-2 (2797) was equipped with an air-to-air refueling probe, but this was not installed in other aircraft.<ref name="Grumman C-2 Greyhound"/><ref>[https://airrefuelingarchive.wordpress.com/2016/01/02/us-navy-c-2a-greyhound-refueling-from-a-kc-130/ C-2 Greyhound refueling from a US Marine Corps KC-130 tanker] {{Webarchive|url=https://web.archive.org/web/20170202080608/https://airrefuelingarchive.wordpress.com/2016/01/02/us-navy-c-2a-greyhound-refueling-from-a-kc-130/ |date=2 February 2017}} Retrieved 27 January 2017.</ref>

In 1984, the Navy ordered 39 new C-2A aircraft to replace older airframes. Dubbed the Reprocured C-2A or C-2A(R) due to the similarity to the original, the new aircraft has airframe improvements and better avionics. The older C-2As were phased out in 1987, and the last of the new models was delivered in 1990.

===Upgrades===
The 36 C-2A(R)s underwent a critical service life extension program (SLEP). The C-2A(R)'s lifespan was 10,000 hours, or 15,000 carrier landings; plans require the C-2A to perform its mission supporting battle group operational readiness through 2015. The lower landing limit was approaching for most airframes, and the SLEP will increase their projected life to 15,000 hours or 36,000 landings. Once complete, the SLEP will allow the 36 aircraft to operate until 2027. The SLEP includes structural improvements to the center wing, an eight-bladed NP2000 propeller, navigational upgrades including the addition of GPS and the dual [[CAINS]] II navigation system, the addition of crash-survivable flight-incident recorders, and a [[Ground Proximity Warning System|ground proximity warning system]]. The first upgraded C-2A(R) left NAVAIR Depot North Island on 12 September 2005, after sitting on the ground for three and a half years while the SLEP was developed and installed. All aircraft were to receive the SLEP by 2015.<ref>[http://acquisition.navy.mil/rda/home/programs/air/c_2a C-2A Greyhound Logistics Aircraft] {{webarchive |url=https://web.archive.org/web/20090505200035/http://acquisition.navy.mil/rda/home/programs/air/c_2a |date=5 May 2009}}</ref>

[[File:C-2A NP-2000 USS Carl Vinson 2009.jpg|thumb|left|A [[VRC-40]] C-2A(R) after SLEP on {{USS|Carl Vinson}}, July 2009]]
In November 2008, the company also obtained a $37M contract for the maintenance, logistics, and aviation administration services over five years for the C-2A fleet assigned to VX-20 test and evaluation squadron at [[Patuxent River]]. Northrop Grumman worked on an upgraded C-2 version, and offered to modernize the fleet with components common to the E-2D Hawkeye.<ref>[http://www.aviationtoday.com/the-checklist/Osprey-Takes-on-Greyhound-in-Fight-Over-U-S-Navys-COD_78943.html "Osprey Takes on Greyhound in Fight Over U.S. Navy's COD."]. {{webarchive|url=https://web.archive.org/web/20130413015356/http://www.aviationtoday.com/the-checklist/Osprey-Takes-on-Greyhound-in-Fight-Over-U-S-Navys-COD_78943.html |date=13 April 2013}}. ''Aviation Today'', 9 April 2013.</ref>

==Operational history==
[[File:C-2 Greyhound launching from a carrier.jpg|thumb|A C-2 Greyhound launches from a carrier at sea]]
Between November 1985 and February 1987, VR-24 (former Navy Transport Squadron) and its seven reprocured C-2As demonstrated the aircraft's exceptional operational readiness. The squadron delivered {{convert|2000000|lb|t}} of cargo, {{convert|2000000|lb|t}} of mail, and 14,000 passengers in the European and Mediterranean theaters. The C-2A(R) also served the carrier battle groups during Operations [[Gulf War#Operation Desert Shield|Desert Shield]] and [[Operation Desert Storm|Desert Storm]] during the [[Gulf War]], as well as [[Operation Enduring Freedom]] during the war in Afghanistan.<ref>{{Cite book|url=https://books.google.com/books?id=uA6IX5ZrTUUC&q=The+squadron+delivered+2%2C000%2C000+pounds+%28910+t%29+of+cargo%2C+2%2C000%2C000+pounds+%28910+t%29+of+mail+and+14%2C000+passengers&pg=PA103|title=Northrop Color|last1=Petrescu|first1=Relly Victoria|last2=Petrescu|first2=Florian Ion|date=February 2013|publisher=BoD – Books on Demand|isbn=9783848267989}}</ref>{{citation needed|date=January 2017}}

On 2 June 2011, the US Navy loaned two C-2A(R) Greyhounds from VRC-40 to the [[French Navy]]. The two aircraft were stationed at [[Toulon-Hyères Airport]], [[Hyères]], to assist in improving the flow of logistics and supplies to the {{ship|French aircraft carrier|Charles de Gaulle}} operating in the [[Mediterranean Sea]] off Libya in support of the [[2011 military intervention in Libya|NATO intervention in Libya]]. After 16 days, both aircraft returned to the U.S. via [[Shannon Airport]], [[Ireland]], on 18 June 2011.<ref name="AFM281">"US Navy Loans Greyhounds to France". ''[[AirForces Monthly]]'' ([[Key Publishing]]), Issue 281, August 2011, p. 13. {{ISSN|0955-7091}}. Retrieved: 4 October 2011.</ref>

[[File:US Navy 110722-N-BR887-022 Sailors move more than ten thousand pounds of mail delivered by two C-2A Greyhound aircraft assigned to Carrier Logistic.jpg|thumb|{{USS|George Washington|CVN-73|6}} crew unload mail from two C-2A Greyhounds in 2011]]

===Replacement===
The [[Common Support Aircraft]] was once considered as a replacement for the C-2, but failed to materialize. The U.S. Navy was exploring a replacement for the C-2 in September 2009.<ref>{{cite news |url=http://www.navytimes.com/news/2009/09/navy_osprey_092009w/ |title=Navy eyes Ospreys as COD replacements |last=Tilghman |first=Andrew |date=23 September 2009 |newspaper=Navy Times |access-date=21 April 2010}}</ref> Three options were suggested as replacements for the aging C-2s: a new batch of updated C-2s, a transport version of the [[Lockheed S-3 Viking]], and the tilt-rotor [[Bell Boeing V-22 Osprey]].<ref>[http://foxtrotalpha.jalopnik.com/the-navy-should-bring-the-40-year-old-s-3-viking-back-f-1561134099 Lockheed Wants To Bring The S-3 Viking Back From The Dead 4/9/2014] {{Webarchive|url=https://web.archive.org/web/20170115024652/http://foxtrotalpha.jalopnik.com/the-navy-should-bring-the-40-year-old-s-3-viking-back-f-1561134099 |date=15 January 2017}} Retrieved 23 January 2016.</ref>

The C-2 competed with the V-22 Osprey for use as the future COD aircraft. Northrop Grumman proposed modernizing the C-2 by installing the same wings, glass cockpit, and engines as the [[E-2 Hawkeye#E-2D Advanced Hawkeye|E-2D Advanced Hawkeye]]. Installing the [[Allison T56|Rolls-Royce T56-427A]] engines would cut fuel consumption by 13–15% with the same eight-bladed propeller, enabling take-offs with a {{convert|10000|lb|kg|adj=on}} payload in {{convert|125|F|C}} temperature and a range in excess of {{convert|1400|nmi|mi km|abbr=on}}; similar performance by the C-2A requires engine temperatures at {{convert|70|F|C}}, trading fuel for payload. Adopting the E-2D's cockpit would deliver a 10% savings on lifetime logistical support. One of the Greyhound's most important features is its internal volume of {{convert|860|cuft|m3}} of cargo space.<ref>[http://www.defensemedianetwork.com/stories/the-future-cod-aircraft-contenders-the-northrop-grumman-c-2a-greyhound/ "The Future COD Aircraft Contenders: The Northrop Grumman C-2A Greyhound"] {{Webarchive|url=https://web.archive.org/web/20130806121333/http://www.defensemedianetwork.com/stories/the-future-cod-aircraft-contenders-the-northrop-grumman-c-2a-greyhound/ |date=6 August 2013}}. Defensemedianetwork.com, 3 August 2013.</ref> Northrop Grumman stated that their approach could cost far less than the V-22, including saving $120 million from C-2 and E-2D commonality.<ref>[http://insidedefense.com/inside-navy/navy-may-delay-decision-platform-replace-carrier-supply-planes "Navy May Delay Decision On Platform To Replace Carrier Supply Planes"] {{Webarchive |url=https://web.archive.org/web/20180418225407/https://insidedefense.com/inside-navy/navy-may-delay-decision-platform-replace-carrier-supply-planes |date=18 April 2018}}. InsideDefense.com, 25 April 2014.</ref>

In February 2015, the Navy's FY 2016 budget confirmed the V-22's selection for the COD mission, replacing the C-2A.<ref>[http://breakingdefense.com/2015/02/navy-2016-budget-funds-v-22-cod-buy-carrier-refuel/ Navy 2016 Budget Funds V-22 COD Buy, Carrier Refuel] {{Webarchive|url=https://web.archive.org/web/20150510121357/http://breakingdefense.com/2015/02/navy-2016-budget-funds-v-22-cod-buy-carrier-refuel/ |date=10 May 2015}} - Breakingdefense.com, 2 February 2015</ref><ref>{{cite web |author= Mass Communication Specialist 3rd Class Renee Candelario, USN |title= MV-22 Osprey Flight Operations Tested Aboard USS ''Nimitz'' |url= http://www.navy.mil/submit/display.asp?story_id=70031 |work= NNS121008-13 |publisher= USS Nimitz Public Affairs |date= 8 October 2012 |access-date= 22 January 2013 |archive-url= https://web.archive.org/web/20130524120127/http://www.navy.mil/submit/display.asp?story_id=70031 |archive-date= 24 May 2013 |url-status= dead}}</ref><ref>{{cite news |url=http://breakingdefense.com/2015/02/navy-2016-budget-funds-v-22-cod-buy-carrier-refuel/ |title=Navy eyes Ospreys as COD replacements |last=Tilghman |first=Andrew |date=23 September 2009 |newspaper=Navy Times |access-date=21 April 2010 |archive-url=https://web.archive.org/web/20150510121357/http://breakingdefense.com/2015/02/navy-2016-budget-funds-v-22-cod-buy-carrier-refuel/ |archive-date=10 May 2015 |url-status= live}}</ref> The Navy is to order 44 of the Osprey, designated CMV-22B, with deliveries to start in 2020.<ref>Eckstein, Megan. [https://news.usni.org/2016/02/05/navys-osprey-will-be-called-cmv-22b-procurement-to-begin-in-fy-2018 Navy's Osprey Will Be Called CMV-22B; Procurement To Begin In FY 2018] {{Webarchive|url=https://web.archive.org/web/20170202013800/https://news.usni.org/2016/02/05/navys-osprey-will-be-called-cmv-22b-procurement-to-begin-in-fy-2018 |date=2 February 2017}} ''USNI News'' Retrieved 23 January 2017.</ref> The C-2 was originally planned to be retired in 2027, but this was accelerated to 2024.<ref>[https://news.usni.org/2018/10/01/navys-cod-transition-c-2a-cmv-22b-accelerated-first-v-22-deployment-set-2021 Navy's COD Transition from C-2A to CMV-22B Accelerated; First V-22 Deployment Set for 2021] {{Webarchive|url=https://web.archive.org/web/20181004103815/https://news.usni.org/2018/10/01/navys-cod-transition-c-2a-cmv-22b-accelerated-first-v-22-deployment-set-2021 |date=4 October 2018}}. ''USNI News''. 1 October 2018.</ref> The fleet is expected to be fully transitioned to the Osprey by 2028.<ref>{{cite news |last1=Fuentes |first1=Gidget |title=Fleet Logistics Wing Established as Navy Preps for COD Transition, Second Osprey Squadron |url=https://news.usni.org/2019/10/15/fleet-logistics-wing-established-as-navy-preps-for-cod-transition-second-osprey-squadron |access-date=18 December 2022 |work=USNI News |date=15 October 2019}}</ref><ref>{{cite news |last1=Eckstein |first1=Megan |title=Navy Transition from C-2A to CMV-22B Will Span 2020 to 2026; Location of Training Squadron Undecided |url=https://news.usni.org/2018/01/03/navy-transition-c-2a-cmv-22b-span-2020-2026-still-deciding-location-training-squadron |work=USNI News |date=3 January 2018}}</ref>

==Variants==
[[File:C-2A interior DN-SD-03-16988.JPEG|thumb|Interior view from the tail of a C-2A Greyhound assigned to [[VRC-40|Fleet Logistics Support Squadron 40 (VRC-40)]] ]]

;YC-2A
:Prototype, two converted from E-2A Hawkeyes with redesigned fuselage
;C-2A
:Production variant, 17 built
;C-2A(R)
:"Reprocured" C-2A with improved systems based on the E-2C variant, 39 built
;Greyhound 21
:Turbofan powered variant used for anti-submarine warfare, electronic warfare, electronic surveillance, carrier onboard delivery and aerial refuelling. Concept only.<ref>Jane's All the World's Aircraft 1990-1991</ref>

==Operators==
{{flag|United States}}
*[[United States Navy]]
**[[VAW-110]] 1987 to 1994
**[[VAW-120]]
**[[VRC-30]] 1985 to 2023
**[[VRC-40]]
**[[VX-20]]
**[[VRC-50]] 1966 to 1994
**[[VR-24]]

==Accidents==
* On 29 April 1965, YC-2A [[United States military aircraft serials#United States Navy and Marine Corps|BuNo]] 148147 was on a test flight when it was ditched into [[Long Island Sound]], where the four crewmen died of exposure.<ref>{{cite web |url=http://aviation-safety.net/database/record.php?id=19650429-0 |title=29 April 1965 Grumman C-2A Greyhound |publisher=aviation-safety.net |access-date=29 April 2013 |archive-url=https://web.archive.org/web/20130731183854/http://aviation-safety.net/database/record.php?id=19650429-0 |archive-date=31 July 2013 |url-status= live}}</ref>
* On 2 July 1969, Lieutenant Commander Peter Monroe Kennedy was presented the [[Air Medal]] with [[Air Medal#Variants|bronze star]], the first award for heroic achievement in aerial flights for a carrier onboard delivery aircraft. While returning to [[Naval Air Station Cubi Point]] from {{USS|Kitty Hawk|CV-63|6}} operating in Southeast Asia, a failure in the engine gearbox and propeller assembly resulted in the loss of the entire port propeller assembly and substantial portions of the gearbox and nacelle. The separated propeller penetrated the fuselage, causing decompression at over 20,000 feet. Kennedy and his copilot secured the engine,{{clarify|reason=Not clear how they secured the engine, with ropes!|date=October 2018}} descended to a lower altitude, and returned to Cubi Point.<ref>https://aviation-safety.net/wikibase/wiki.php?id=165261 {{Webarchive|url=https://web.archive.org/web/20180328102749/https://aviation-safety.net/wikibase/wiki.php?id=165261 |date=28 March 2018}}. aviation-safety.net</ref>
[[File:A C-2A Greyhound lands on the flight deck of USS Ronald Reagan. (35349241870).jpg|thumb|The C-2A lost on 22 November 2017, landing on the USS ''Ronald Reagan'' in July 2017]]
* On 2 October 1969, C-2A of [[VRC-50]], carrying six crew members and 21 passengers, crashed in the [[Gulf of Tonkin]] en route from Cubi Point to {{USS|Constellation|CV-64|6}}. All aboard are officially listed as missing in action, as their bodies were never recovered.<ref>{{cite web |url=http://aviation-safety.net/database/record.php?id=19691002-0 |title=2 October 1969 Grumman C-2A Greyhound |publisher=aviation-safety.net |access-date=29 April 2013 |archive-url=https://web.archive.org/web/20130731180717/http://aviation-safety.net/database/record.php?id=19691002-0 |archive-date=31 July 2013 |url-status = live}}</ref>
* On 15 December 1970, a C-2A of VRC-50 crashed shortly after launch from {{USS|Ranger|CV-61|6}}, killing all four crew members and five passengers.<ref>{{cite web |url=http://aviation-safety.net/database/record.php?id=19701215-0 |title=15 December 1970 Grumman C-2A Greyhound |publisher=aviation-safety.net |access-date=29 April 2013 |archive-url=https://web.archive.org/web/20130731192310/http://aviation-safety.net/database/record.php?id=19701215-0 |archive-date=31 July 2013 |url-status= live}}</ref>
* On 12 December 1971, C-2A crashed en route from Cubi Point to [[Tan Son Nhat International Airport]], killing all four crew members and six passengers.<ref>{{cite web |url=http://aviation-safety.net/database/record.php?id=19711212-2 |title=12 December 1971 Grumman C-2A Greyhound |publisher=aviation-safety.net |access-date=29 April 2013 |archive-url=https://web.archive.org/web/20130731191459/http://aviation-safety.net/database/record.php?id=19711212-2 |archive-date=31 July 2013 |url-status= live}}</ref>
* On 29 January 1972, C-2A crashed while attempting to land on the {{USS|Independence|CV-62|6}} in the Mediterranean Sea, killing both crewmen.<ref>{{cite web |url=http://aviation-safety.net/database/record.php?id=19720129-1 |title=29 January 1972 Grumman C-2A Greyhound |publisher=aviation-safety.net |access-date=29 April 2013 |archive-url=https://web.archive.org/web/20130731184717/http://aviation-safety.net/database/record.php?id=19720129-1 |archive-date=31 July 2013 |url-status= live}}</ref>
* On 16 November 1973, C-2A crashed into the sea after takeoff from [[Chania International Airport]], killing seven of 10 persons on board.<ref>{{cite web |url=http://aviation-safety.net/database/record.php?id=19731116-0 |title=16 November 1973 Grumman C-2A Greyhound |publisher=aviation-safety.net |access-date=29 April 2013 |archive-url=https://web.archive.org/web/20130731181519/http://aviation-safety.net/database/record.php?id=19731116-0 |archive-date=31 July 2013 |url-status= live}}</ref>
* On 22 November 2017, C-2A of [[VRC-30]] carrying 11 crew and passengers crashed in the waters southeast of Japan's [[Okinawa Island]] in the [[Philippine Sea]] while in flight to the aircraft carrier {{USS|Ronald Reagan}}. Eight of the 11 were rescued.<ref>{{cite news |url=https://www.reuters.com/article/us-japan-usa-crash/u-s-navy-plane-crashes-in-philippine-sea-with-11-crew-and-passengers-idUSKBN1DM0Q5 |title=U.S. Navy plane crashes in Philippine Sea, three missing |work=[[Reuters]] |date=22 November 2017 |access-date=22 November 2017 |archive-url=https://web.archive.org/web/20171122085245/https://www.reuters.com/article/us-japan-usa-crash/u-s-navy-plane-crashes-in-philippine-sea-with-11-crew-and-passengers-idUSKBN1DM0Q5 |archive-date=22 November 2017 |url-status= live}}</ref><ref>{{cite web |url=https://www.nytimes.com/2017/11/22/world/asia/us-navy-japan.html |title=Navy Aircraft With 11 Aboard Crashes into Waters Off Japan |work=New York Times |date=22 November 2017 |access-date=22 November 2017 |first=Motoko |last=Rich |archive-url=https://web.archive.org/web/20171122101516/https://www.nytimes.com/2017/11/22/world/asia/us-navy-japan.html |archive-date=22 November 2017 |url-status= live}}</ref><ref>{{cite web |url=http://www.businessinsider.com/us-navy-plane-carrying-11-crashes-in-the-philippine-sea-2017-11 |title=US Navy plane carrying 11 crashes in the Philippine Sea en route to aircraft carrier |last=Lockie |first=Alex |date=22 November 2017 |website=businessinsider.com |publisher=[[Business Insider]] |access-date=23 November 2017 |archive-url=https://web.archive.org/web/20171123002536/http://www.businessinsider.com/us-navy-plane-carrying-11-crashes-in-the-philippine-sea-2017-11 |archive-date=23 November 2017 |url-status= live}}</ref><ref>{{cite web |url=https://www.theguardian.com/us-news/2017/nov/22/three-missing-us-navy-plane-crashes-philippine-sea |title=Three missing after US navy plane crashes in Philippine Sea |last=Walters |first=Joanne |date=23 November 2017 |work=[[The Guardian]] |access-date=23 November 2017 |archive-url=https://web.archive.org/web/20171123094650/https://www.theguardian.com/us-news/2017/nov/22/three-missing-us-navy-plane-crashes-philippine-sea |archive-date=23 November 2017 |url-status= live}}</ref><ref>{{cite web |url=https://theaviationist.com/2017/11/22/u-s-navy-aircraft-carrying-11-crew-and-passengers-crashed-in-the-ocean-southeast-of-okinawa/ |title=U.S. Navy C-2A Aircraft Carrying 11 Crew And Passengers Crashed in the Ocean Southeast of Okinawa |last=Cenciotti |first=David |date=22 November 2017 |website=theaviationist.com |access-date=23 November 2017 |archive-url=https://web.archive.org/web/20171122192212/https://theaviationist.com/2017/11/22/u-s-navy-aircraft-carrying-11-crew-and-passengers-crashed-in-the-ocean-southeast-of-okinawa/ |archive-date=22 November 2017 |url-status= live}}</ref><ref>{{cite web |url=http://www.navy.mil/submit/display.asp?story_id=103492 |title=Search Ends For Sailors in C-2A Crash |author=<!--Not stated--> |date=23 November 2017 |website=navy.mil |access-date=25 November 2017 |archive-url=https://web.archive.org/web/20171125011811/http://www.navy.mil/submit/display.asp?story_id=103492 |archive-date=25 November 2017 |url-status= dead}}</ref> The aircraft was located on the ocean floor at a depth of {{convert|5640|m|ft|abbr=on}} during the last week of December 2017, when a salvage ship used a pinger receiver to locate the aircraft's emergency signal. The Navy salvaged the aircraft and recovered the remains of the three sailors inside,<ref name="2018-01-07">[https://www.militarytimes.com/news/your-navy/2018/01/06/navy-locates-crashed-c-2a-greyhound-deep-on-pacific-seabed/ Navy locates crashed C-2A Greyhound deep on Pacific seabed] {{Webarchive|url=https://web.archive.org/web/20180109063819/https://www.militarytimes.com/news/your-navy/2018/01/06/navy-locates-crashed-c-2a-greyhound-deep-on-pacific-seabed/ |date=9 January 2018}}. [[The Associated Press]]/MilitaryTimes.com, 2018-01-07</ref><ref>{{cite web |url=https://www.c7f.navy.mil/Media/News/Display/Article/1443702/us-navy-maps-downed-c-2a-greyhound/ |title=U.S. Navy Maps Downed C-2A Greyhound |author=<!--Not stated--> |date=15 February 2018 |access-date=19 April 2018 |archive-url=https://web.archive.org/web/20180418092852/http://www.c7f.navy.mil/Media/News/Display/Article/1443702/us-navy-maps-downed-c-2a-greyhound/ |archive-date=18 April 2018 |url-status= live}}</ref> in late May 2019.<ref>{{cite web |url=https://news.usni.org/2019/06/05/navy-recovers-c-2a-from-fatal-2017-crash-from-3-miles-underwater |title=Navy Recovers C-2A from Fatal 2017 Crash from 3 Miles Underwater |publisher=usni.news.org |date= 5 June 2019 |access-date=23 January 2020}}</ref>
<!--
Only accidents or notable incidents above. See [[WP:AIRCRASH]], [[WP:AIRCRASH-TYPEARTICLE]] and [[WP:WikiProject_Aviation/Aircraft_accidents_and_incidents#Aircraft_articles]] for project guidelines for inclusion. -->

==Specifications (Reprocured C-2A)==
[[File:Grumman C-2A Greyhound 3-view.png|right|400px|Orthographically projected diagram of the C-2A Greyhound]]
{{Aircraft specs
|ref= U.S. Navy<ref name="USN_fact_file">{{cite web |url=http://www.navy.mil/navydata/fact_display.asp?cid=1100&tid=100&ct=1 |title=Navy Fact File |date=17 February 2009 |publisher=Navy.mil |access-date=11 June 2016 |archive-url=https://web.archive.org/web/20160417220410/http://www.navy.mil/navydata/fact_display.asp?cid=1100&tid=100&ct=1 |archive-date=17 April 2016 |url-status= dead}}</ref><ref>{{cite web |url=http://www.history.navy.mil/planes/c-2.pdf |title=Performance Summary |author=NAVAIR |work=Standard Aircraft Characteristics, Reprocured C-2A |date=November 1984 |access-date=21 April 2010 |archive-url=https://web.archive.org/web/20121018120330/http://www.history.navy.mil/planes/c-2.pdf |archive-date=18 October 2012 |url-status= dead}}</ref>
|prime units?=kts
<!--   General characteristics
-->
|crew=2 flight crew and 2 loadmasters
|capacity=26 passengers / 12 litter patients / {{cvt|10000|lb|0}} payload
|length ft=56
|length in=10
|length note=
|span ft=80
|span in=7
|span note=
|width ft=<!-- if applicable -->
|width in=<!-- if applicable -->
|width note=
|height ft=15
|height in=10.5
|height note=
|wing area sqft=700
|wing area note=
|aspect ratio=<!-- sailplanes -->
|airfoil='''root:''' [[NACA airfoil|NACA]] 63A216; '''tip:''' NACA 63A414<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |access-date=16 April 2019}}</ref>
|empty weight lb=33746
|empty weight note=
|gross weight lb=49394
|gross weight note=
|max takeoff weight lb=60000
|max takeoff weight note=
|fuel capacity=
|more general=
<!--   Powerplant
-->
|eng1 number=2
|eng1 name=[[Allison T56-A-425]]
|eng1 type=[[turboprop]] engines
|eng1 shp=4600
|eng1 note=

|prop blade number=8
|prop name=[[UTC Aerospace Systems]] NP2000
|prop dia m=<!-- propeller aircraft -->
|prop dia ft=<!-- propeller aircraft -->
|prop dia in=<!-- propeller aircraft -->
|prop dia note=constant-speed fully-feathering reversible propellers
<!--   Performance
-->
|max speed kts=343
|max speed note=at {{cvt|12000|ft|0}}
|cruise speed kts=251
|cruise speed note=at {{cvt|28700|ft|0}}
|stall speed kts=82
|stall speed note=
|never exceed speed kts=
|never exceed speed note=
|minimum control speed kts=
|minimum control speed note=
|range nmi=1300
|range note=with {{cvt|10,000|lb}} load; or {{cvt|1500|nmi|mi km}} with light load<ref name=rhp/>
|ferry range nmi=2,000
|ferry range note=with internal fuel package<ref name=rhp/>
|endurance=<!-- if range unknown -->
|ceiling ft=33500
|ceiling note=
|g limits=<!-- aerobatic -->
|climb rate ftmin=3700
|climb rate note=at sea level
|time to altitude=
|wing loading lb/sqft=77.6
|wing loading note=
|fuel consumption lb/mi=
|power/mass=
|more performance=
|avionics=
}}

==See also==
{{aircontent
|see also=

|related=
* [[Northrop Grumman E-2 Hawkeye]]
|similar aircraft=
* [[Bell Boeing CMV-22 Osprey]]
* [[Grumman C-1 Trader]]
* [[Lockheed S-3 Viking#Variants|Lockheed US-3 Viking]]
* [[Xian KJ-600]]
|lists=
* [[List of military electronics of the United States]]
}}

==References==
{{Reflist|30em}}

==External links==
{{Commons category|Grumman C-2 Greyhound}}
* [http://www.navy.mil/navydata/fact_display.asp?cid=1100&tid=100&ct=1 U.S. Navy C-2 fact file] {{Webarchive|url=https://web.archive.org/web/20160417220410/http://www.navy.mil/navydata/fact_display.asp?cid=1100&tid=100&ct=1 |date=17 April 2016}}
* [http://www.history.navy.mil/planes/c2.htm U.S. Navy Historical Center C-2A Factsheet] {{Webarchive|url=https://web.archive.org/web/20100924083315/http://www.history.navy.mil/planes/c2.htm |date=24 September 2010}}
* [http://www.c2greyhound.com Private homepage by Boerries Burkhardt with all information of the Grumman C-2A Greyhound]

{{Grumman aircraft}}
{{USAF transports}}
{{Authority control}}

[[Category:Grumman aircraft|C-002 Greyhound]]
[[Category:1960s United States military transport aircraft]]
[[Category:High-wing aircraft]]
[[Category:Twin-turboprop tractor aircraft]]
[[Category:Carrier-based aircraft]]
[[Category:Aircraft first flown in 1964]]
[[Category:Quad-tail aircraft]]
[[Category:Aircraft with retractable tricycle landing gear]]