Editing Grumman E-2 Hawkeye (section)

==Variants==
[[File:E-2A VAW-11 CVA-43 1966.jpg|thumb|E-2A of VAW-11 landing in 1966 on {{USS|Coral Sea|CV-43|6}}]]
[[File:E-2B VAW-113 CV-43 1979.jpg|thumb|A VAW-113 E-2B after landing on USS ''Coral Sea'' in 1979]]
[[File:US Navy 040810-N-6213R-038 An E-2C Hawkeye assigned to the Black Eagles of Carrier Airborne Early Warning Squadron One One Three (VAW-113).jpg|thumb|A U.S. Navy E-2C Hawkeye launches from USS ''John C. Stennis'']]

;W2F-1 : Original designation of the Hawkeye, changed to E-2A in 1962.
;E-2A : Initial production version, was W2F-1 before 1962. 59 built.<ref name="Godfrey p8"/>
;TE-2A : Two E-2As converted as crew trainers.<ref name="Godfrey p8"/>
;YC-2A : Two E-2As, BUNOs 148147 and 148148, converted as prototypes of the [[C-2 Greyhound]]
;E-2B : As E-2A but fitted with improved computing, enlarged outer fins. 52 converted from E-2A.<ref name="Godfrey p8"/>
;YE-2C : Two E-2As, BUNOs 148712 and 148713, converted as E-2C prototypes. Designated as YE-2C and NE-2C respectively.  These airframes then finished out their useful life being used as TE-2C pilot trainers.
;E-2C : As the E-2B but with all new electronics, surveillance radar and search radar, 63 built. In "plus-models" the E-2C also has upgraded turboprop engines.
:;E-2C Group 0
:: Initial production version of E-2C, fitted with AN/APS-120 or AN/APS-125 radar. Lengthened nose compared to earlier versions<ref name="Godfrey p9-0">Godfrey 1977, pp. 9–10.</ref><ref name="JAWA03 p687">Jackson 2003, p. 687.</ref>
;;E-2C Group I
::New radar (AN/APS-139), plus upgraded mission computer and upgraded engines. 18 new build aircraft.<ref name="JAWA03 p687"/><ref name="WinAI p47">Winchester ''Air International'' December 2005, p. 47.</ref>
;;E-2C Group 2
::AN/APS-145 radar, further improved electronics.<ref name="JAWA03 p687"/><ref name="WinAI p47"/>
;;E-2C Group 2 Plus (Nav Upgrade)
::Avionics upgrade, inclusion of GPS into weapon system.{{citation needed|date=April 2015}}
;;E-2C Hawkeye 2000
::New mission computer, Cooperative Engagement Capability (CEC) and additional satellite communications aerial. Originally designated Group 2+.<ref name="JAWA03 p687"/><ref name="WinAI p47"/>
;E-2D : A variant with new avionics suite, improved engines, a new "glass cockpit" and the potential for air-to-air refueling.
;E-2T/K : E-2C variant for [[Republic of China]] (Taiwan), with parts taken from retired E-2Bs ([[United States military aircraft serials#United States Navy and Marine Corps|USN BuNos]] 151709, 151710, 151724, 152479).<ref name="Joe1">{{cite web|url=http://www.joebaugher.com/navy_serials/thirdseries19.html|title=US Navy/Marine Corps BuNos Third Series (150139 to 156169)|date=24 July 2010|publisher=Joe Baugher (JoeBaugher.Com)|access-date=4 October 2010|archive-url=https://web.archive.org/web/20101008212915/http://www.joebaugher.com/navy_serials/thirdseries19.html|archive-date=October 8, 2010|url-status=dead}}</ref> However, these aircraft have the same level of electronics as the E-2C Group II Hawkeyes with their APS-145 radars and are referred to as E-2T, with "T" standing for Taiwan.<ref name="auto"/> On July 31, 1999, Taiwan was approved to acquire two additional E-2s built to Hawkeye 2000 standard. Later, the four original E-2Ts were also upgraded to the same standard. The upgraded aircraft were referred to as E-2Ks.{{cn|date=January 2024}}