IAircraft manufacturers had, for about quaternion decades, attempted to blueprint the elusive DC-3 surrogate with dissimilar powerplant types, including the piston-engined Convair 240/340/440 and Martin 2-0-2/4-0-4 series and the turboprop Vickers Viscount, Fokker F.27 Friendship, and Packman Siddeley HS.748. The modish seek had been made by the British people aircraft industriousness when both de...