The Viscount was a medium-range turboprop airliner introduced in 1953 by Vickers-Armstrong, making it the first such aircraft to enter service in the world. It would go on to be one of the most successful of the first-generation post-war transports, with 445 being built over the life of the production line. It was particularly well liked by the passengers, as it was quiet and vibration free and had much larger windows than those found on more modern airliners.