A description of the flight deck, the passenger cabin, the interior trim and soundproofing. From the initial stage of F.28 cockpit development onwards, two man crew operation has been a basic design consideration. Throughout the years most short and medium haul transport aircraft have been operated by two men. Until recently it was generally accepted that the number of crew required was mainly determined by aircraft size and range. To‐day, however, operational experience is indicating that complicated A.T.C. procedures in congested traffic areas and increased aircraft speeds can make the workload a problem for two men, unless special measures are taken to relieve their task.