Viscount, Comet and ConcordeSubtitled: The Story of Three Pioneer Airliners of the Postwar Era. The Vickers Viscount was the worlds first turboprop airliner and remains Britains most successful commercial airliner. The de Havilland Comet, appearing in 1949, was the worlds first jet airliner. And the BAC-Aerospatiale Concorde is the only supersonic transport to have achieved the status of regular airline service, cruising over long distances at twice the speed of sound. Detailed highlights of each aircrafts development and operational history. Legends of the Air 3. Sftbd., 8 1/2x 11, 196 pgs., 32 color pgs.