Vickers Viscount Vickers Viscount The Vickers Viscount was a British medium-range turboprop airliner first flown in 1948 by Vickers-Armstrongs. A design requirement from the Brabazon Committee, it entered service in 1953 and was the first turboprop-powered airliner. The Viscount was well received by the public for its cabin conditions, which included pressurisation, reductions in vibration and noise, and panoramic windows. It became one of the most successful and profitable of the first post-war transport aircraft; 445 Viscounts were built for a range of international customers, including in North America. The Viscount was a response to the Brabazon Committee's Type II design for
Commuter Aircraft Corporation CAC-100 be supplied by four Pratt & Whitney Canada PT6A-65R turboprop engines driving five-bladed Hartzell Propeller constant speed reversible propellers. Production facilities were constructed at Youngstown, Ohio but the project was shelved in 1983 before its first flight. Commuter Aircraft Corporation CAC-100 The Commuter Aircraft Corporation CAC-100 was a 50–60 seat, four-engined, turboprop commuter airliner developed in the United States in the late 1970s and early 1980s.<ref name="JAWA81/82"></ref> The design of the CAC-100 originated from the General Aircraft Corporation GAC-100,<ref name="JAWA70/71"></ref> designed in the late 1960s. The GAC-100 design was enlarged and new technologies incorporated to produce the CAC-100. The proposed