Basic Design Philosophy and Systems: A Description of the Basic Requirements Leading to the Design of This Short‐Haul, Twin Turbofan‐Powered, Airliner Including Details of the Electrical, Hydraulic, Flying Control, Fuel, Air Conditioning, Pressurization, Anti‐Icing, Oxygen and Fire Protection Systems and Associated Equipment Available to Purchase

FOR a number of years now it has been evident that a successor to the well‐tried Vickers Viscount and Convoir 240/340/440 series was required. However, the big problem was to design an aircraft such that its economics and passengerappealweresub‐stantially better than the machines it would ultimately replace. Other important factors which had to be con‐sidered were improved reliability, easier and cheaper maintenance, higher standards of safety and means of reducing ramp times. Furthermore, the difficult choice of passenger capacity and cruising speed had to be made. Probably the easiest decision was to employ the twin‐engine configuration with the power plants placed in the now familiar rear position, one on cither side of the fuselage.