HC Deb 26 February 1959 vol 600 c196W
Sir A. Bossom

asked the Minister of Transport and Civil Aviation if he will investigate whether civil aeroplanes equipped with mechanical controls which warn of the approach of other aeroplanes on obstructive dangers to flying, should be required to keep these controls continuously alive, and not only at times of poor visibility.

Mr. Watkinson

I understand that it is already normal practice for pilots to do as the hon. Member suggests.