Abstract :
In the nature of things, the change from theoretical research to practical implementation of automatic-landing techniques has been reflected in a broadening of responsibility, and what was initially the concern of a single agency (the Blind Landing Experimental Unit of the RAE) has now become a considerable co-operative enterprise, in which industry, the airlines, the Air Registration Board, various Ministry of Aviation branches and the RAE all play a part. In such a situation, all participants make important contributions, but this account has been limited to those areas in which the RAE has been particularly active.
