Military


Rotary Aircraft Designation Crosswalk

HC Helicopter, Cargo
HJ Helicopter, Utility
HN Helicopter, Training
HO Helicopter, Observation
HR Helicopter, Transport
HS Helicopter, Anti-Submarine
HT Helicopter, Training
HU Helicopter, Utility
R Rotary
H Helicopter
HC Helicopter, Cargo
HO Helicopter, Observation
HU Helicopter, Utility
Navy US Army AF US Army / USAF
Navy USAAF DOD
DSN QH-50
HCH
HJD
HJH
HJP H-25
HJS
HNS R-4 H-4
HO2S R-5 H-5
HO3S R-5 H-5
HO4S H-19
HO5S H-18
HOE H-32
HOK H-43
HOS R-6
HR2S H-37
HR3S
HRB H-46
HRH
HRP H-21
HRS H-19
HSL
HSS-1 H-34
HSS-2 H-3
HTE H-23
HTK H-22
HTL R-13 H-13
HU H-1
HU2K H-2
HU2S H-52
HUK H-43
HUL H-13
HUM H-30
HUP-2 H-25
HUS H-34
Navy USAAF DOD
R-1
R-2
R-3
HNS R-4 H-4
HO2S R-5 R-5
HO3S R-5 R-5
HOS R-6
R-7
R-8 H-8
R-9 H-9
R-10 H-10
R-11 H-11
R-12 H-12
HTL R-13 H-13
R-14
R-15 H-15
R-16 H-16
Army / USAF DOD Services
HC-1A CH-46C Army
HC-1B CH-47A Army
HO-1
HO-2 HZ-1
HO-2 H-42 / H-55
HO-3
HO-4 OH-4 Army
HO-5 OH-5 Army
HO-6 OH-6 Army
HU-1 UH-1 Army
HX CH-46B Air Force
H-2 CH-46B Air Force
H-13 OH-13 Army
H-19 H-19 Air Force/Army
H-21 CH-21 Air Force/Army
H-23 OH-23 Army
H-34 CH-34 Army
H-37 CH-37 Army
H-41 UH-41 Army
H-43 HH-43 Air Force
H-40 UH-1 Air Force

"Missing" Helicopters

# Contractor Notes
H-27 Piasecki initially the designation for the second YH-16 w/T-38 turbine engines, redesignated YH-16A prior to the first flight in 1955.
H-28 Hughes Designation assigned to the improved H-17 Model M-190-4A. None ever built.
H-29 McDonnell Designation assigned to the 2-seat version of the H-20. The project was cancelled.
H-33 Bell Original Army designation given to the XV-3 Convertiplane.
H-35 McDonnell Original Army designation given to XV-1. Reserved for Navy use and then cancelled. Designation never utilized.
H-36 Bell? Reserved for Navy use and then cancelled. Designation later assigned to a classified project, LONG EARS, a/c# 59-5926.
H-38 Reserved for Navy use and then cancelled. Designation later assigned to a classified project, SHORT TAIL.
H-40 Bell The production models designated UH-1.
H-42 Hughes Model 269, the YHO-2HU later the TH-55A Osage for the Army.
H-44 Reserved for Navy use and then cancelled. Designation later assigned to a classified project, BIG TOM.
H-45 secret Air Force FTD (Foreign Technology Division) project STEP CHILD.
H-49 Boeing-Vertol briefly allocated in 1962 to a USAF Model 107 helicopter, then changed to XCH-46B.
H-69 skipped and will not be assigned.



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