Sikorsky began work on the S-58 in 1951 as a general purpose utility machine and as a more capable anti-submarine platform for the US Navy, to follow the S-55. It differed principally in a larger cabin area directly under the main gearbox - still driven by an oblique shaft from the nose mounted engine - the considerably more powerful R-1820-84 piston radial. It had a 4 bladed main rotor, a lower level foldable boom on which was mounted the port-side 4 bladed tail rotor and a tripod undercarriage (with tail wheel). It first flew in prototype on 8 Mar 1954 and the first production airframe flew on 20 Sep 1954. 
S-58 H-34 News |
White House Christmas Ornament Helicopter
17-Dec-19 - Eisenhower was the first U.S. President to fly in helicopter and the White House Historical Association remembering him throughout 2019 with the release of a Christmas Ornament of the Sikorsky HUS-1Z / VH-34D #Christmas
White House Helicopter Christmas Ornament
22-Feb-19 - The White House Historical Association remembering President Eisenhower throughout 2019. As the first president to fly in helicopter, they released a Christmas Ornament of the Sikorsky HUS-1Z / VH-34D flew jointly by the Army and Marines #WhiteHouse
Dallas Justice Center Equipment by Helicopter
30-Nov-16 - A 5 State Helicopters Inc’ S-58ET helicopter helped in the installation of data equipment at the Lew Sterrett Justice Center in Dallas, Texas Specifications S-58 H-34 |
Derivatives & Versions of S-58 H-34 |
| Model | Year | History |
|---|---|---|
| XHSS-1 1953 | 1953 | Sikorsky S-58 prototype anti-submarine helicopter desigmated XHSS-1 by USN. Four built. |
| HSS-1 / SH-34G Seabat 1954 | 1954 | Sikorsky production S-58 for anti-submarine warfare, desgnated HSS-1 / SH-34G by USN. |
| HUS-1 / UH-34D Seahorse 1954 | 1954 | HUS-1/UH-34D Seahorse was the utility version of the HSS-1/SH-34G Seabat with early bent leg / torsion bar undercarriage. Production began in 19 ... |
| CH-126 Choctaw 1955 | 1955 | Sikorsky S-58B (H-34A) in Canadian service |
| H-34A Choctaw 1955 | 1955 | US Army variant. Conversions to H-34C. Redesignated CH-34A in 1962. Many transferred to South Vietnam Air Force and Thailand. |
| S-58B 1955 | 1955 | Commercial/Export designation for H-34B (Basic H-34A with detail changes)
|
| HUS-1L / LH-34D 1956 | 1956 | Factory winterized version of HUS-1 used by VXE-6 for Operation DEEP FREEZE support in Antartica. Seven produced. |
 SA S-58 1956 | 1956 | |
| S-58C 1956 | 1956 | |
| H-34G.I 1957 | 1957 | |
| HSS-1F / SH-34H 1957 | 1957 | Sikorsky HSS-1 fitted with two GE YT-58 turbine engines as test bed for HSS-2 prototype. Redesignated SH-34H in Oct62. |
| HUS-1A / UH-34E 1957 | 1957 | Basic HUS-1 but equipped with amphibious pontoons. They can also carry an external fuel tank. Re-designated UH-34E in 1962 |
| HUS-1Z / VH-34D Seahorse 1957 | 1957 | Presidential helicopter |
| VH-34A/C Choctaw 1957 | 1957 | VIP variant used by White House |
| HSS-1N / SH-34J Seabat 1958 | 1958 | Night/Bad weather version of the HSS-1 with improved avionics and autopilot, re-designated SH-34J in 1962 Many airframes later converted to UH-34J by removal of ASW gear. |
| Westland Wessex 1958 | 1958 | the sikorsky s-58 (ff 8 mar 1954) entered usn service late 1955 as the hss-1. this looked a good bet for the uk admiralty, which had been searchi ... |
| H-34G.II 1959 | 1959 | |
| HH-34F Seahorse 1959 | 1959 | Original designated HUS-1G, search & rescue version of HUS-1 / UH-34D Seahorse for US Coast Guard. Six built |
| CH-34C Choctaw 1962 | 1962 | Improved H-34A for US Army and export under MDAP. |
| UH-34G Seabat 1962 | 1962 | Conversion of HSS-1 / SH-34G by US Navy into utility version by removing ASW equipment. |
| H-34G III 1963 | 1963 | |
| S-58D 1964 | 1964 | |
| S-58T 1970 | 1970 | First flight on August 1970, the S-58T is an old airframe converted to turboshaft power using different versions of the Pratt & Whitney Canada ... |
| HH-34J Choctaw 1971 | 1971 | Former US Navy aircraft transferred to AFRES rescue squadrons |
