sentences:  (BUA, from whom BCal inherited these routes, had been prevented from offering a first class on its East African routes.To compensate for this loss of competitiveness, Sir Freddie Laker, BUA's managing director from 1960 to 1965, had come up with the idea of designing a cargo door to be installed on the left-hand side of the forward fuselage of that airline's long-haul VC10s, where the first class cabin was normally located.This modification permitted the carriage of additional freight instead of first class passengers on the East African routes.)