Variants
H-40: The initial Bell 204
prototype. Three prototypes were built,
equipped with the Lycoming XT-53-L-1
engine of 700 shp (520 kW).
YH-40: Six aircraft for
evaluation, as XH-40 with 12-inch
(300 mm) cabin stretch and other
modifications.
Bell Model 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. 182 built.
- TH-1A: UH-1A with dual
controls and blind-flying
instruments, 14 conversions.
- XH-1A: A single UH-1A was
redesignated for grenade launcher
testing in 1960.
HU-1B: Upgraded HU-1A,
various external and rotor improvements.
Redesignated
UH-1B in 1962. 1014
built plus four prototypes designated
YUH-1B.
- NUH-1B: a single test
aircraft, serial number 64-18261.
UH-1C: The UH-1B gunship
lacked the power necessary to carry
weapons and ammunition and keep up with
transport Hueys, and so Bell designed
yet another Huey variant, the "UH-1C",
intended strictly for the gunship role.
It is an UH-1B with improved engine,
modified blades and rotor-head for
better performance in the gunship role.
767 built.
YUH-1D: Seven pre-production
prototypes of the UH-1D.
UH-1D: Initial Bell 205
production model (long fuselage version
of the 204). Designed as a troop carrier
to replace the CH-34 then in US Army
service. 2008 built many later converted
to UH-1H standard.
- HH-1D: Army crash rescue
variant of UH-1D.
UH-1E: UH-1B/C for USMC with
different avionics and equipment. 192
built.
- NUH-1E: UH-1E configured
for testing.
- TH-1E: UH-1C configured
for Marine Corps training. Twenty
were built in 1965.
UH-1F: UH-1B/C for USAF with
General Electric T58-GE-3 engine of
1,325 shp (988 kW). 120 built.
- TH-1F: Instrument and
Rescue Trainer based on the UH-1F
for the USAF. 26 built.
UH-1G: Unofficial name
applied locally to at least one armed
UH-1H by Cambodia.
UH-1H: Improved UH-1D with a
Lycoming T53-L-13 engine of 1,400 shp
(1,000 kW). 5435 built.
- UH-1H: Canadian Forces
designation for the UH-1H utility
transport helicopter. Redesignated
CH-118. A total of 10 built.
- 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. A
total of 30 built.
- JUH-1: Five UH-1Hs
converted to SOTAS battlefield
surveillance configuration with
belly-mounted airborne radar.
- TH-1H: Recently modified
UH-1Hs for use as basic helicopter
flight trainers by the USAF.
UH-1J: An improved Japanese
version of the UH-1H built under license
in Japan by Fuji was locally given the
designation UH-1J. Among
improvements were an Allison T53-L-703
turboshaft engine providing 1,343 kW
(1,800 shp), a vibration-reduction
system, infrared countermeasures, and a
night-vision-goggle (NVG) compatible
cockpit.
HH-1K: Purpose built SAR
variant of the Model 204 for the US Navy
with USN avionics and equipment. 27
built.
TH-1L: Helicopter flight
trainer based on the HH-1K for the USN.
A total of 45 were built.
- UH-1L: Utility variant of
the TH-1L. Eight were built.
UH-1M: Gunship specific UH-1C
upgrade with Lycoming T53-L-13 engine of
1,400 shp (1,000 kW).
UH-1N: Initial Bell 212
production model, the Bell "Twin Pac"
twin-engined Huey powered by Pratt &
Whitney Canada T400-CP-400.
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".
EH-1U: No more than 2 UH-1H
aircraft modified for Multiple Target
Electronic Warfare System (MULTEWS).
UH-1V: Aeromedical
evacuation, rescue version for the US
Army.
EH-1X: Ten Electronic warfare
UH-1Hs converted under "Quick Fix IIA".
UH-1Y: Upgraded variant
developed from existing upgraded late
model UH-1Ns, with additional emphasis
on commonality with the AH-1Z.
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