Military designations (UH-1 and AH-1)
XH-40The initial Bell 204 prototype. Three prototypes were built.
YH-40Six aircraft for evaluation, as XH-40 with 12-inch cabin stretch and other modifications.
Bell 533One YH-40BF rebuilt as a flight test bed with turbofan engines and wings.
HU-1AInitial Bell 204 production model, redesignated as the
UH-1A in 1962. The HU-1 designation gave rise to the popular but unofficial nickname "Huey".
TH-1AUH-1A with dual controls and blind-flying instruments, 14 conversions.
XH-1AA single UH-1A was redesignated for grenade launcher testing in 1960.
HU-1BUpgraded HU-1A, various external and rotor improvements. Redesignated
UH-1B in 1962.
YUH-1BUH-1B prototypes
NUH-1BA single test aircraft, serial number 64-18261.
UH-1CUH-1B with improved engine, modified blades and rotor-head for better performance in the gunship role.
YUH-1DSeven pre-production prototypes of the UH-1D.
UH-1DInitial Bell 205 production model (long fuselage version of the 204). Also built under license in Germany by
Dornier.
HH-1DRescue/fire fighting variant of UH-1D.
AH-1E98 production Cobra gunships with the Enhanced Cobra Armament System (ECAS) featuring the M97A1 armament subsystem with a three-barreled M197 20 mm cannon. The AH-1E is also referred to as the "Upgunned AH-1S", or "AH-1S(ECAS)" prior to 1988.
UH-1EUH-1B/C for USMC with different avionics and equipment.
NUH-1EUH-1E configured for testing.
TH-1EUH-1C configured for Marine Corps training. Twenty built in 1965.
AH-1F"Modernized AH-1S", with upgraded avionics and defensive systems.
UH-1FUH-1B/C for the USAF, with General Electric T-58-GE-3 engine of 1,325 shp.
TH-1FInstrument and Rescue Trainer based on the UH-1F for the USAF.
UH-1GDesignation given locally to UH-1D/H gunships operating with the Cambodia armed forces.
AH-1GInitial 1966 production model of the
Cobra gunship for the US Army, with one 1,400 shp Avco Lycoming T53-13 turboshaft.
JAH-1GOne Cobra helicopter modified for armament testing, including Hellfire missiles and multi-barrel cannon.
TH-1GTwo-seat dual-control Cobra trainer.
UH-1HImproved UH-1D with a
Lycoming T-53-L-13 engine of 1,400 shp; 5,435 built. Also built under license in Taiwan by AIDC.
CUH-1HCanadian Forces designation for the UH-1H utility transport helicopter. Redesignated
CH-118.
EH-1HTwenty-two aircraft converted by installation of AN/ARQ-33 radio intercept and jamming equipment for Project Quick Fix.
HH-1HSAR variant for the USAF with rescue hoist. 30 built.
JUH-1Five UH-1Hs converted to SOTAS battlefield surveillance configuration with belly-mounted airborne radar.
TH-1HModified UH-1Hs for use as basic helicopter flight trainers by the USAF.
AH-1JOriginal twin-engine
SeaCobra version, subsequently upgraged and exported to
Iran as AH-1J "International"
UH-1JAn improved Japanese version of the UH-1H built under license in Japan by Fuji was locally given the designation UH-1J.
HH-1KPurpose built SAR variant of the Model 204 for the US Navy with USN avionics and equipment. 27 built.
TH-1LHelicopter flight trainer based on the HH-1K for the USN.
UH-1LUtility variant of the TH-1L.
UH-1MGunship specific UH-1C upgrade with
Lycoming T-53-L-13 engine of 1,400 shp.
UH-1NInitial
Bell 212 production model, the Bell "Twin Pac" twin-engined Huey.
AH-1P100 production aircraft with composite rotors, flat plate glass cockpit, and improved cockpit layout for nap-of-earth (NOE) flight. The AH-1P is also referred to as the "Production AH-1S", or "AH-1S(PROD)" prior to 1988.
UH-1PUH-1F variant for USAF for special operations use and attack operations used solely by the USAF
20th Special Operations Squadron, "the Green Hornets".
YAH-1QEight AH-1Gs with XM26 Telescopic Sight Unit (TSU) and two M56
TOW 4-pack launchers.
AH-1QUpgraded AH-1G equipped with the M65 TOW/Cobra missile subsystem, M65 Telescopic Sight Unit (TSU), and M73 Reflex sight.
YAH-1RAH-1G powered by a T53-L-703 engine without TOW system.
AH-1ROProposed version for Romania as
Dracula.
YAH-1SAH-1Q upgrade and TOW system.
AH-1SAH-1Q upgraded with a 1,800 shp T53-L-703 turboshaft engine.
AH-1TNamed
Improved SeaCobra, features an extended tailboom and fuselage and an upgraded transmission and engines.
UH-1USingle prototype for Counter Mortar/Counter Battery Radar Jamming aircraft. Crashed at Edwards AFB during testing.
UH-1VAeromedical evacuation, rescue version for the US Army.
AH-1WSuperCobra variant, nicknamed "Whiskey Cobra", day/night version with more powerful engines and advanced weapons capability.
EH-1XElectronic warfare UH-1Hs converted under "Quick Fix IIA".
UH-1YNamed
Venom, upgraded variant developed from existing upgraded late model UH-1Ns, with additional emphasis on commonality with the AH-1Z as part of the
H-1 upgrade program.
AH-1ZNamed
Viper, or also "Zulu Cobra", it includes an upgraded 4 blade main rotor and adds the Night Targeting System (NTS). Offered as
King Cobra to Turkey for its ATAK program and selected for production in 2000, but later canceled.
UH-1/T700Upgraded commercial version, named
Ultra Huey, fitted with a 1,400-kW (1900-shp) General Electric T700-GE-701C turboshaft engine.
CH-118Canadian Forces designation for the UH-1H
CH-135Canadian Forces designation for the UH-1N Twin Huey
CH-146Canadian Forces designation for the
Bell 412Griffin HT1RAF designation for a trainer based on the 412EP
Griffin HAR2RAF designation for a
search and rescue helicopter based on the 412EP
Bell 204B11 Seat utility transport helicopter; the civil certified model was based at the military model 204, known by the US Army as the UH-1B.
Agusta-Bell AB 20411 Seat utility transport helicopter. Built under licence in Italy by Agusta.
Agusta-Bell AB 204ASAnti-submarine warfare, anti-shipping version of the AB 204 helicopter.
Fuji-Bell 204B-211 seat utility transport helicopter. Built under licence in Japan by Fuji Heavy Industries.
Bell 205A15 seat utility transport helicopter.
Agusta-Bell 20515 seat utility transport helicopter. Built under licence in Italy by Agusta.
Bell 205A-115 seat utility transport helicopter, initial version based on the UH-1H.
Agusta-Bell 205A-1Modified version of the AB 205.
Fuji-Bell 205A-115 seat utility transport helicopter. Built under licence in Japan by Fuji.
Bell 205A+Field upgraded 205A utilizing a T53-17 engine and a 212 rotor system. Similar to the production 205B and 210.
Bell 205A-1AA 205A-1, but with armament hardpoints and military avionics. Produced specifically for Israeli contract.
Bell 205B15 seat upgraded 205A
Agusta-Bell 205BGPrototype fitted with two Gnome H 1200 turboshaft engines.
Agusta-Bell 205TAPrototype fitted with two Turbomeca Astazous turboshaft engines.
Advanced 205BProposed upgraded Japanese version.
Bell 208Experimental twin-engine "Twin Huey" prototype.
Bell 209Original AH-1G prototype with retractable skid landing gear.
Bell 21015 seat upgraded 205A
Bell 211The
HueyTug, was a commercial version of the UH-1C with an upgraded transmission, longer main rotor, larger tailboom, strengthened fuselage, stability augmentation system, and a 2,650 shp (1,976 kW) Lycoming T-55-L-7 turboshaft engine.
Bell 21215 seat twin-engined derivative of the Bell 205
Bell 214 Huey PlusStrengthened development of the Bell 205 airframe with a larger engine
Bell 214ST18 seat twin engined utility helicopter
Bell 249Experimental AH-1 demonstrator version fitted with a four-bladed rotor system, an uprated engine and experimental equipment, including Hellfire missiles.
Bell 309 KingCobra Experimental version powered by one Lycoming T-55-L-7C engine.
Bell 412Bell 212 with a four-bladed semi-rigid rotor system.
Bell Huey IIA modified and re-engined UH-1H, significantly upgrading its performance, and its cost-effectiveness. Currently offered by Bell to all current military users of the type.
Global EaglePratt & Whitney Canada name for a modified UH-1H with a new PT6C-67D engine, modified tail rotor, and other minor changes to increase range and fuel efficiency over the Bell 212.
Huey 800Upgraded commercial version, fitted with an LHTEC T800 turboshaft engine.
Panha Shabaviz 2-75Unlicensed version made by Panha in Iran.
Panha 2091Unlicensed Iranian upgrade of the AH-1J International.