The S-62 was the world’s first true amphibious helicopter. Equipped with a flying boat hull and powered by a single gas turbine engine (CT58-110-1 (1050 shaft horsepower (SHP) derated to 670 SHP) the S-62 operates from land, water, snow, ice, mud, swamp, and tundra.

The Sikorsky HH-52 Seaguard (company designation S-62) is an early amphibious helicopter designed and produced by American helicopter manufacturer Sikorsky Aircraft.

The prototypes were followed by the S-62A for civil passenger and utility use. They type was built under license in Japan by Mitsubishi as the S-62J starting in 1962.

The improved S-62C was built and ordered by the US Navy for the US Coast Guard, initially as the HU2S-1G, then redesignated in 1962 as the HH-52A Seaguard. Mitsubishi built the type under license as the S-62J for Japanese domestic use.

The Sikorsky HH-52 Seaguard (company designation S-62) was a single turbine engine, three-blade rotor amphibious helicopter. Originally developed as a commercial venture by the Sikorsky Aircraft Corporation of Stratford, Connecticut, it was used by the United States Coast Guard primarily for air-sea rescue.

May 8, 2019 · The S-62A was a development of the well proven S-55 series using many components of that type, including rotor blades, main and tail rotor heads, main, intermediate and tail gearboxes, shafting, and portions of the flying control and hydraulic systems, but with a completely new amphibious fuselage.

The Sea Guard or Sea Guardian helicopter was created to fill a need for a fully amphibious small helicopter. The design began in 1957 as the S-62A (later designated HH-52A), using the rotor and transmission from the S-55 and a single turbo shaft and fuselage similar to the H-3 (S-61) Sea King. The first prototype flew in May of 1958.

Jun 1, 2024 · The Sikorsky S-62A is powered by one General Electric CT58-110-1 turboshaft engine, offset to the left of the aircraft centerline. The engine has a 10-stage axial-flow compressor, an annular combustion chamber, 2-stage gas producer turbine, a …

It served 24 Coast Guard air stations in the United States. Backed by the mighty SP-5B Marlin, this HH-52 was taken on strength by the USCG in 1963 and served at several different Coast Guard Air Stations before retirement to the museum in 1987.

Crashed into the Pacific Ocean 400 miles off the coast of Acapulco Mexico while operating from the Coast Guard Cutter Rush in 1987. All 4 crew members survived, but it sank and was left on the ocean floor. Last noted derelict at Elizabeth City, NC in 1994. Scrapped.