over
Masada ;
XH-40 :The initial Bell 204 prototype. Three prototypes were built. ;
YH-40 :Six aircraft for evaluation, as XH-40 with 12-inch cabin stretch and other modifications. ;
Bell 533 :One YH-40BF rebuilt as a flight test bed with turbofan engines and wings. ;
HU-1A :Initial 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-1A :UH-1A with dual controls and blind-flying instruments, 14 conversions. ;
AH-1G :Initial 1966 production model of the
Cobra gunship for the US Army, with one 1,400 shp Avco
Lycoming T53-13 turboshaft. ;JAH-1G :One Cobra helicopter modified for armament testing, including
Hellfire missiles and multi-barrel cannon. ;TH-1G :Two-seat dual-control Cobra trainer. ;
CUH-1H :
Canadian Forces designation for the UH-1H utility transport helicopter. Redesignated
CH-118. ;
EH-1H :Twenty-two aircraft converted by installation of AN/ARQ-33 radio intercept and jamming equipment for Project Quick Fix. ;HH-1H :
SAR variant for the
USAF with rescue hoist. ;
HH-1K :Purpose-built
SAR variant of the Model 204 for the
US Navy with USN avionics and equipment. ;
AH-1P :100 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-1P :UH-1F variant for
USAF for special operations use and attack operations used solely by the USAF
20th Special Operations Squadron, "the Green Hornets". in service with the
Multinational Force and Observers. ;UH-1/T700 :Upgraded commercial version, named
Ultra Huey, fitted with a 1,400-kW (1900-shp)
General Electric T700-GE-701C turboshaft engine. ;
CH-118 :Canadian Forces designation for the UH-1H ;
CH-135 :Canadian Forces designation for the UH-1N Twin Huey ;
CH-146 :Canadian Forces designation for a variant of the
Bell 412 ;Griffin HT1 :
RAF designation for a trainer based on the 412EP ;Griffin HAR2 :
RAF designation for a
search and rescue helicopter based on the Bell 412EP == Civil designations ==