§ 41. Mr. Dayasked the Secretary of State for Air particulars and number of airports in Great Britain that have been fitted and equipped with blind landing wireless equipment in the interests of safety in fog and other conditions of low visibility; and can he state if, according to reports received, same has been successful in use up to date?
Captain BalfourEquipment designed to assist landings in conditions of bad visibility has been installed at three civil airports in Great Britain, namely, Croydon, Heston and Liverpool Reports received indicate that the Lorenz installation at Croydon and the medium wave beacon at Liverpool have proved satisfactory in operation. At Heston electrical interference has so far prevented the use of the Lorenz system, but steps are being taken to overcome the difficulty. Meanwhile, an alternative known as the Z.Z. system has been provided at Heston and this, though only recently installed, is proving satisfactory.
Captain BalfourAs regards the instruments, we are constantly in a state of technical development, and he would be a bold person who would say that we have reached finality.