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The R-4 was the world's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces, [1] the United States Navy, the United States Coast Guard and the United Kingdom's Royal Air Force and Royal Navy. In U.S. Navy and U.S. Coast Guard service, the helicopter was known as the Sikorsky HNS-1.
In 1962, the United States Marine Corps held a competition to choose an assault support helicopter to replace the Cessna O-1 fixed-wing aircraft and the Kaman OH-43D helicopter. The winner was the UH-1B, which was already in service with the Army. The helicopter was designated the UH-1E and modified to meet Marine
First helicopter tested by the USAAF. [1] 1941 Never 2 Sikorsky R-4: Sikorsky Aircraft Corporation: World's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces. [2] 1942 Unknown 131 Sikorsky H-5: Sikorsky Aircraft Corporation 1943 1945 300 Sikorsky R-6: Sikorsky Aircraft Corporation ...
During April 1966, Bell's submission emerged victorious in an evaluation against the other rival helicopters. The US Army promptly signed the first production contract, ordering an initial batch of 110 aircraft. [6] [8] By the end of the year, rapid follow-on orders had increased this to 500 Cobras. [4]
The S-52 was the first US helicopter with all-metal rotor blades. Initially a two-seater, it was developed into the four-seat S-52-2 and S-52-3. It was designated HO5S-1 by the U.S. Navy and Marine Corps, HO5S-1G by the Coast Guard, and YH-18A by the U.S. Army , and was used extensively by civil operators after being retired by the military.
The military helicopter that collided with a regional jet near Ronald Reagan Washington National Airport, in a crash that killed all 67 people aboard both aircraft, was a UH-60 Black Hawk ...
The Hiller OH-23 Raven is a two, three, or four-place, military light observation helicopter based on the Hiller Model 360. The Model 360 was designated by the company as the UH-12 ("UH" for United Helicopters), [1] which was first flown in 1948.
The collision between a passenger flight and an Army helicopter near Washington, D.C., on Jan. 29 marks the first fatal disaster involving a U.S. commercial airliner in 16 years.