Sikorsky H-34

H-34Sikorsky S-58Sikorsky S-58TUH-34DUH-34UH-34sCH-34HSS-1 SeabatUH-34D SeahorseH-34 Choctaw
The Sikorsky H-34 (company designation S-58) is a piston-engined military helicopter originally designed by American aircraft manufacturer Sikorsky as an anti-submarine warfare (ASW) aircraft for the United States Navy.wikipedia
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Westland Wessex

WessexWestland Wessex HAS.1Westland Wessex HC.2
It has seen extended use when adapted to turbine power by the British licensee as the Westland Wessex and Sikorsky as the later S-58T. The CH-34 was also built and developed under license from 1958 in the United Kingdom by Westland Aircraft as the turboshaft engined Wessex which was used by the Royal Navy and Royal Air Force.
The Westland Wessex was a British-built turbine-powered development of the Sikorsky H-34.

Piasecki H-21

H-21CH-21CH-21 Shawnee
French evaluations on the reported ground fire vulnerabilities of the CH-34 may have influenced the U.S. Army's decision to deploy the CH-21 Shawnee to Vietnam instead of the CH-34, pending the introduction into widespread service of the Bell UH-1 Iroquois.
In 1956, seeking a way to use helicopters in a ground-attack role in the Algerian War, the French Air Force and French Army Aviation (Aviation Légère de l'Armée de Terre) experimented with arming the Sikorsky S-55, then being superseded in service by the more capable Piasecki H-21 and Sikorsky H-34 helicopters.

Sikorsky H-19 Chickasaw

H-19Sikorsky H-19Sikorsky HO4S-3
The Sikorsky S-58 was developed as a lengthened and more powerful version of the Sikorsky Model S-55, or UH-19 Chickasaw, with a similar nose, but with a tail-dragger rear fuselage and landing gear, rather than the high-tail, 4-post pattern.
In 1956, the French Air Force experimented with arming the H-19, then being superseded in service by the more capable Piasecki H-21 and Sikorsky H-34 helicopters.

Sikorsky Aircraft

SikorskySikorsky Aircraft CorporationSikorsky Aviation Corporation
The Sikorsky H-34 (company designation S-58) is a piston-engined military helicopter originally designed by American aircraft manufacturer Sikorsky as an anti-submarine warfare (ASW) aircraft for the United States Navy.

Armed helicopter

armedcombat helicopterhelicopter gunships
USMC H-34s were also among the first helicopter gunships trialled in theatre, being fitted with the Temporary Kit-1 (TK-1), comprising two M60C machine guns and two 19-shot 2.75 inch rocket pods.
In 1956, the French Air Force experimented with arming the Sikorsky S-55, then being superseded in service by the more capable Piasecki H-21 and Sikorsky CH-34 helicopters.

U.S. helicopter armament subsystems

Temporary Kit-1 (TK-1)Area Weapon SystemArmament Subsystem, Helicopter, Caliber .30 Machine Gun, Twin, M1
USMC H-34s were also among the first helicopter gunships trialled in theatre, being fitted with the Temporary Kit-1 (TK-1), comprising two M60C machine guns and two 19-shot 2.75 inch rocket pods.

Air assault

airmobilevertical envelopmentair mobility
The use of armed helicopters during the Algerian War, coupled with helicopter transports which can insert troops into enemy territory, gave birth to some of the tactics of airmobile warfare that continue today.
The helicopters, including types such as the H-21, the Alouette II, the Sikorsky H-19 and Sikorsky H-34, together aggregated over 190,000 flying hours in Algeria (over 87,000 for the H-21 alone) and helped to evacuate over 20,000 French combatants from the combat area, including nearly 2,200 at night.

Six-Day War

1967 war19671967 Arab-Israeli War
Israeli S-58s flew numerous combat missions after the end of the Six-Day War; these missions were mainly against Palestinians infiltrating Israel or against their bases in Jordan.

Westland Aircraft

WestlandWestland Aircraft CompanyWestland Aircraft Works
The CH-34 was also built and developed under license from 1958 in the United Kingdom by Westland Aircraft as the turboshaft engined Wessex which was used by the Royal Navy and Royal Air Force.
Success with the Dragonfly was repeated with the Sikorsky S-55 which became the Whirlwind, and a re-engined Sikorsky S-58 in both turboshaft and turbine engine powered designs as the Wessex.

East 34th Street Heliport

Atlantic Metro PortEast 34th Street
In the late 1980s and early 1990s, S-58T turbine-powered helicopters were operated by New York Helicopters in scheduled passenger airline service between JFK International Airport and East 34th Street Heliport, New York.
Fourteen-seat turbine-powered Sikorsky S-58T helicopters were used on this service.

Khmer Air Force

Royal Khmer AviationKhmer Royal Aviation
Khmer Air Force
A small Helicopter force also began to take shape, with the delivery in 1958-59 of three Sikorsky H-34 Choctaws by the US MAAG, followed in 1960 of two Sud Aviation SA 313B Alouette II by the French and of two Sikorsky H-19 Chickasaws by the Americans in 1963.

Indonesian Air Force

Air ForceTNI-AUIndonesia
*Indonesian Air Force
In 1973, the United States supplied military assistance including T33s trainers and UH-34D helicopters in exchange for four old MiG-21F-13s.

Air America (airline)

Air AmericaCATfront companies
Air America
Air America aircraft, including the Curtiss C-46 Commando, Pilatus PC-6 Porter, de Havilland Canada DHC-4 Caribou, Lockheed C-130 Hercules, and Fairchild C-123 Provider, along with UH-34D, Bell 204B, 205, and CH-47C Chinook helicopters, flew many types of cargo to countries such as the Republic of Vietnam, the Kingdom of Laos, and Cambodia.

Battle of Karameh

attack on KaramehKaramehOperation Inferno
On 21 March 1968, various S-58s participated in the Battle of Karameh, bringing Israeli troops in and out of the theatre as well as evacuating the wounded.
At 11:00 the Israelis began to withdraw, with Sikorsky H-34 helicopters evacuating the troops.

Armed Forces of Haiti

Haitian Air ForceHaitian armyGarde d'Haiti
*Haitian Air Corps
Sikorsky S-58T (CH-34 ChoctawC)

VXE-6

Antarctic Development Squadron SixAntarctic Development Squadron Six (VXE-6)Squadron VXE-6
Four HUS-1s converted for Antarctic operations with VXE-6, re-designated LH-34D in 1962.
Helicopters included the Sikorsky H-19 Chickasaw (HO4S-3 model) and Sikorsky LH-34 Seahorse (HUS-1A and HUS-1L models), and the Bell UH-1N Twin Huey.

Royal Lao Air Force

Laotian Aviation
Royal Lao Air Force
Nosavan received aerial logistical support not only from the diminished Lao air force, but from Royal Thai Air Force H-19s and four Air American H-34s, as well as a Bird & Son C-46.

South Vietnam Air Force

South Vietnamese air forceAir ForceVNAF
Republic of Vietnam Air Force
The VNAF was supplied with H-19 helicopters, and later H-34s.

Belgian Air Component

Belgian Air ForceAir ComponentAviation Militaire Belge
Belgian Air Force

Estrella Warbird Museum

Estrella War Birds Museum
143937 – UH-34D on static display at the Estrella Warbirds Museum in Paso Robles, California.
Sikorsky UH-34D Choctaw

French Naval Aviation

AéronavaleAéronautique NavaleAeronavale
Later, a further 166 were domestically manufactured by Sud-Aviation; these were operated by the French Army Light Aviation (Army), French Naval Aviation (Navy) and Air force.
Sikorsky S-58

Pratt & Whitney Canada PT6T

P&WC T400-WV-402PT6T Twin-PacPW&C T400-CP-400
Commercial conversion to turboshaft power using Pratt & Whitney Canada PT6T-3 Twin-Pac turboshaft with special nose cowling featuring distinctive twin rectangular air intakes, designations relate to original model:
Sikorsky S-58T

Hubschraubermuseum Bückeburg

Helicopter Museum of BückeburgBückeburg Helicopter Museumhelicopter museum
81+09 – H-34 GIII on static display at the Hubschraubermuseum Bückeburg in Bückeburg, Lower Saxony.
Sikorsky S-58 / H-34)

Royal Thai Air Force Museum

H4k-64/30 – Type 4A on static display at the Royal Thai Air Force Museum in Bangkok, Bangkok.

Flying Leatherneck Aviation Museum

150219 – UH-34D on static display at the Flying Leatherneck Aviation Museum in San Diego, California.
Sikorsky HUS Seahorse 150219