Regional airliner were replaced by progressively longer-range designs. In the immediate post-war era these were typically Douglas DC-3s, although even the De Havilland Dragon Rapide biplane airliner remained in service for some time. This "hand-me-down" process of supplying aircraft continued with designs like the Convair 440, Douglas DC-6 and Vickers Viscount also serving in this role while the first jets were introduced. By the mid-1950s, demand for even more economical designs led to the production of the first custom feederliners. These were almost always turboprops, which had fuel economy on par with piston engine designs, but had far lower maintenance costs. Often
Aerospace industry in the United Kingdom service (the de Havilland Comet), the first aircraft capable of supercruise (the English Electric Lightning), the first supersonic commercial jet airliner to enter service (the Aérospatiale-BAC Concorde), the first fixed-wing V/STOL combat aircraft to enter service (the Hawker Siddeley Harrier), the first twin-engined widebody commercial jet airliner (the Airbus A300), the first digital fly-by-wire commercial aircraft (the Airbus A320), and the largest commercial aircraft to enter service to date (the Airbus A380). Private flying initially stimulated the UK aviation industry and by October 1913 there were over 80 private airworthy aeroplanes, more than the airworthy planes in the recently formed