§ Mr. Martenasked the President of the Board of Trade what steps are taken in the interests of safety to see that the public address loudspeakers in passenger aircraft are clearly audible in flight and capable of being used to pass emergency instructions.
§ Mr. J. P. W. MallalieuThe carriage of public address equipment is not mandatory on British public transport aircraft and consequently there are no minimum performance standards. The law compels operators to carry cabin staff and emergency instructions are passed to passengers by them. Drills are so arranged that they are not dependent upon a public address system.