U.S Army Bell 47 Helicopter

The Bell 47 entered US military service in late 1946, and operated in a variety of versions and under different designations for three decades. It was designated H-13 Sioux by the US Army, and during the Korean War, it served a variety of roles, including reconnaissance and scouting, search and rescue, and medevac.
The "Telecopter" was a Bell 47 rented by television station KTLA in Los Angeles, California. It was outfitted with a television camera and it made the world's first flight by a television news helicopter on July 3, 1958, with its inventor, John D. Silva, aboard. When the television station reported it was receiving no video, Silva exited the helicopter's cockpit to climb onto its landing skid while it hovered at 1,500 feet (457 m) so he could investigate the microwave transmitter bolted to its side, where he discovered a vacuum tube had failed due to vibration and hot weather. After Silva fixed the problem overnight, the Telecopter made the world's first successful television news flight on July 4, 1958.[9]
The National Aeronautics and Space Administration (NASA) had a number of Bell 47s during the Apollo program, used by astronauts as trainers for the lunar lander. Apollo 17 commander Eugene Cernan had a nearly disastrous crash into the Indian River in Florida in 1971, before his flight to the Moon.[10] The 47 has also served as the helicopter of choice for basic helicopter flight instruction in many countries.
Records
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13 May 1949, a Bell 47 set an altitude record of 18,550 feet (5,650 m).[11]
21 September 1950, first helicopter to fly over the Alps.[11]
17 September 1952, Bell pilot Elton J. Smith set a world distance record for piston helicopters of 1,217 miles (1,959 km) by flying nonstop from Hurst, Texas, to Buffalo, New York.[11] As of 2018, this record still stands.
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