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Chosen to replace the HH-3F Pelican, the MH-60T is a member of the Sikorsky S-70 family of helicopters and is based on the U.S. Navy's SH-60 Seahawk helicopter, [1] itself based on the U.S. Army's UH-60 Black Hawk helicopter. Development began in September 1986, first flight was achieved on 8 August 1989, and the first HH-60J entered USCG ...
The Bell UH-1N Twin Huey is a medium military helicopter designed and produced by the American aerospace manufacturer Bell Helicopter.It is a member of the extensive Huey family, the initial version was the CUH-1N Twin Huey (later CH-135 Twin Huey), which was first ordered by the Canadian Forces in 1968.
Each company built prototype helicopters and went through a flight test program. Hughes' Model 77/YAH-64A prototype first flew on 30 September 1975, while Bell's Model 409/YAH-63A prototype first flew on 1 October 1975. After evaluating the test results, the Army selected Hughes' YAH-64A over Bell's YAH-63A in 1976.
British Airways Helicopters 234LR at Aberdeen Airport in 1985 Model 234LR (long range): Commercial transport helicopter. The Model 234LR can be fitted out as an all-passenger, all-cargo, or cargo/passenger transport helicopter. [136] Model 234ER (extended range): Commercial transport version.
TH-1H: Recently modified UH-1Hs for use as basic helicopter flight trainers by the USAF. HH-1K: Purpose-built SAR variant of the Model 204 for the US Navy with USN avionics and equipment. [14] 27 built. [117] TH-1L: Helicopter flight trainer based on the HH-1K for the USN. A total of 45 were built.
The FAA states "The height–velocity diagram or H/V curve is a graph charting the safe/unsafe flight profiles relevant to a specific helicopter. As operation outside the safe area of the chart can be fatal in the event of a power or transmission failure it is sometimes referred to as the dead man's curve."
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 ...
In 1998, some 50 Bell 430s were in service with 9,000 flight hours totaled. [6] On September 3, 1996, Americans Ron Bower and John Williams broke the round-the-world helicopter record with the second Bell 430, flying westwards from the UK with a time of 17 days, 6 hours and 14 minutes. [1] [4]