Sikorsky H-37 Mojave

The Sikorsky H‑37 Mojave was a light utility helicopter developed by Sikorsky Aircraft Corporation in the early 1960s to meet the growing demand for civilian and military rotary‑wing transport. Drawing on the proven design of the earlier H‑33, the H‑37 featured a more powerful General Electric T58‑10 turboshaft delivering 1,050 shaft horsepower, a fully articulated three‑bladed main rotor, and a spacious tubular fuselage that could accommodate up to six passengers or a modest cargo load. First flown on 12 May 1963, the prototype demonstrated superior climb performance and a maximum speed of 150 knots, earning certification from the FAA in 1965. Although production numbers remained limited—only 24 airframes were built—the Mojave found niche roles with the U.S. Coast Guard, the Royal Saudi Air Force, and several oil‑rig operators in the Gulf of Mexico. Its significance lies in bridging the gap between early piston‑engine helicopters and the modern turbine‑powered workhorses that dominate the market today, showcasing Sikorsky’s transition to reliable turboshaft technology and influencing later models such as the S‑58 and S‑61. The H‑37’s blend of versatility, improved payload, and operational reliability cemented its place in rotary‑wing history.

Sikorsky Aircraft Corporation

Sikorsky H-37 Mojave

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Design & Classification