Hawker Siddeley Trident 1978, 117 Tridents had been produced. BEA's successor British Airways withdrew its Tridents by the mid-1980s. Trident services ended in China in the early 1990s. In 1953, as British European Airways (BEA) introduced the world's first turboprop-powered civil airliner – the Vickers Viscount – into passenger service, the operator was already considering what would be required of a potential successor. Following the entry into service of jet airliners in 1952, many airline managers and economists remained sceptical and advocated turboprop airliners as replacements of piston-engined airliners. In 1953, while several manufacturers across the world were investing in pure jet-powered aircraft,
Nihon Aircraft Manufacturing Corporation different manufacturing companies and university professors, NAMC was founded in April 1957 by executives from Mitsubishi Heavy Industries, Fuji Heavy Industries, Shinmeiwa Manufacturing, Sumitomo, Japan Aircraft, Showa Aircraft, and Kawasaki Heavy Industries with the goal of designing and manufacturing a Japanese civilian turboprop airliner to replace the successful but aging Douglas DC-3. The resulting aircraft, the YS-11, became the only successful civilian airliner to come out of Japan in the 20th century and the only airliner designed and produced in Japan for over 50 years until the Mitsubishi Regional Jet made its maiden flight in 2015. By the late 1970s,