H - Helicopters

HC - Helicopter, Transport

Model	Designation	Manufacturer	Engine(s)	Crew	Other
XHCH-1		McDonnell			cancelled

HJ - Helicopter, Utility

Model	Designation	Manufacturer	Engine(s)	Crew	Other
XHJD-1	Whirlaway	McDonnell	2 Pratt & Whitney R-985 Twin Wasp Junior		XHJH-1
XHJH-1	Whirlaway	McDonnell	2 Pratt & Whitney R-985 Twin Wasp Junior		XHJD-1
XHJP-1		Piasecki	1 Wright R-975-34 Whirlwind	5
XHJS-1		Sikorsky	1 Wright R-975-34 Whirlwind

HN - Helicopter, Trainer

Model	Designation	Manufacturer	Engine(s)	Crew	Other
HNS-1	Hoverfly	Sikorsky	1 Warner R-550-3 Super Scarab	1	R-4B

HO - Helicopter, Observation

Model	Designation	Manufacturer	Engine(s)	Crew	Other
XHOE-1	Hornet	Hiller	2 Hiller 8RJ2B		YH-32
XHOG-1		Gyrodyne	1 Nelson H-59	1	XRON-1
XHOK-1		Kaman	1 Pratt & Whitney R-1340-48 Wasp	2
HOK-1		Kaman	1 Pratt & Whitney R-1340-48 Wasp	2	OH-43D
XHOS-1		Sikorsky	1 Franklin O-405-9
HOS-1		Sikorsky	1 Franklin O-405-9		R-6A
HOS-1G		Sikorsky	1 Franklin O-405-9
HO2S-1		Sikorsky	1 Pratt & Whitney R-985-AN-3 Twin Wasp Junior		H-5A, R-5A
HO3S-1	Dragonfly	Sikorsky	1 Pratt & Whitney R-985-AN-5 Twin Wasp Junior
HO3S-1G	Dragonfly	Sikorsky	1 Pratt & Whitney R-985-AN-5 Twin Wasp Junior
HO3S-2	Dragonfly	Sikorsky			cancelled
XHO3S-3	Dragonfly	Sikorsky	1 Pratt & Whitney R-985-AN-5 Twin Wasp Junior
HO4S-1		Sikorsky	1 Pratt & Whitney R-1340-57 Wasp
HO4S-2		Sikorsky	1		cancelled
HO4S-3		Sikorsky	1 Wright R-1300-3		UH-19F
HO4S-3G		Sikorsky	1 Wright R-1300-3		HH-19G
HO5S-1		Sikorsky	1 Franklin O-425-1
HO5S-1G		Sikorsky	1 Franklin O-425-1

HR - Helicopter, Transport

Model	Designation	Manufacturer	Engine(s)	Crew	Other
HRB-1	Sea Knight	Boeing Vertol	2 General Electric T58-GE-8B		CH-46A
XHRH-1		McDonnell	2 Allison T56-A-4		cancelled
XHRP-1	Rescuer	Piasecki	1 Pratt & Whitney R-1340-AN-1 Wasp
HRP-1	Rescuer	Piasecki	1 Pratt & Whitney R-1340-AN-1 Wasp
HRP-1G	Rescuer	Piasecki	1 Pratt & Whitney R-1340-AN-1 Wasp
HRP-2	Rescuer	Piasecki	1 Pratt & Whitney R-1340 Wasp
HRS-1		Sikorsky	1 Pratt & Whitney R-1340 Wasp
HRS-2		Sikorsky	1 Pratt & Whitney R-1340 Wasp		CH-19E Chickasaw
HRS-3		Sikorsky	1 Wright R-1300-3		CH-19E Chickasaw
HRS-4		Sikorsky	1 Wright R-1820 Cyclone
XHR2S-1		Sikorsky	2 Pratt & Whitney R-2800 Double Wasp	3
HR2S-1		Sikorsky	2 Pratt & Whitney R-2800 Double Wasp	3	CH-37C
HR2S-1W		Sikorsky	2 Pratt & Whitney R-2800 Double Wasp	3
XHR3S-1		Sikorsky	2 General Electric T58		CH-3C

HS - Helicopter, Antisubmarine

Model	Designation	Manufacturer	Engine(s)	Crew	Other
XHSL-1		Bell	1 Pratt & Whitney R-2800-50 Double Wasp	4
HSL-1		Bell	1 Pratt & Whitney R-2800-50 Double Wasp	4
XHSS-1	Seabat	Sikorsky	1 Wright R-1820	1
HSS-1	Seabat	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	SH-34G
HSS-1F	Seabat	Sikorsky	1 Wright R-1820-84B/84D Cyclone		SH-34H
HSS-1L	Seabat	Sikorsky	1 Wright R-1820-84B/84D Cyclone		LH-34D
HSS-1N	Seabat	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	SH-34J
HSS-1Z	Seabat	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	VH-34D
HSS-2	Sea King	Sikorsky	2 General Electric T58-GE-8B		RH-3A, SH-3A
HSS-2A	Sea King	Sikorsky	2 General Electric T58-GE-10		SH-3D
HSS-2B	Sea King	Sikorsky	2 General Electric T58-GE-10	4	SH-3H
HSS-2Z	Sea King	Sikorsky	2 General Electric T58-GE-8B/8F		VH-3A

HT - Helicopter, Training

Model	Designation	Manufacturer	Engine(s)	Crew	Other
HTE-1		Hiller	1 Franklin O-335	3
HTE-2		Hiller	1 Franklin O-335-6	3
HTK-1		Kaman	1 Lycoming O-435-4	3	TH-43
HTK-1K		Kaman	1 Lycoming O-435-4	0
HTL-1		Bell	1 Franklin O-335-1	2	YR-13
HTL-2		Bell	1 Lycoming O-435	2	H-13
HTL-3		Bell	1 Franklin O-335
HTL-4		Bell	1 Lycoming O-435	2	TH-13L
HTL-5		Bell	1 Franklin O-335-5
HTL-6		Bell	1 Lycoming O-435	2	TH-13M
HTL-7		Bell	1 Lycoming O-435	2	TH-13N

HU - Helicopter, Utility

Model	Designation	Manufacturer	Engine(s)	Crew	Other
HUK-1		Kaman	1 Pratt & Whitney R-1340-52 Wasp	3	UH-43C
HU2K-1	Seasprite	Kaman	1 General Electric T58		UH-2A
HU2K-1U	Seasprite	Kaman	1 General Electric T58		UH-2B
HUL-1		Bell	1 Lycoming O-435	2	UH-13P
HUL-1G		Bell	1 Lycoming O-435	2	HH-13Q
HUL-1M		Bell	1 Allison T63		HUL-2, UH-13R
HUL-2		Bell	1 Allison T63		HUL-1M, UH-13R
HUM-1		McCulloch	1 Franklin O-335	2
HUP-1	Retriever	Piasecki	1 Wright R-975-34 Whirlwind	5
HUP-2	Retriever	Piasecki	1 Wright R-975-42 Whirlwind	5	UH-25B
HUP-2S	Retriever	Piasecki	1 Wright R-975-42 Whirlwind	5
HUP-3	Retriever	Piasecki	1 Wright R-975-42 Whirlwind	5	H-25A Army Mule, UH-25C
HUS-1	Seahorse	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	UH-34D
HUS-1A	Seahorse	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	UH-34E
HUS-1G	Seahorse	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	HH-34F
HUS-1L	Seahorse	Sikorsky	1 Wright R-1820-84B/84D Cyclone	1	LH-34D
HU2S-1G	Sea Guard	Sikorsky	1 General Electric T58-GE-8B	2	HH-52A