The Air Navigation (General) (Fourth Amendment) Regulations 1971
Made - 27th October 1971. Coming into Operation— for all purposes of Regulation 3(1)(a) and (2) 15th November 1971 for all other purposes Ist February 1972. The Secretary of State, in exercise of his powers under Articles 9(3), 10(4), 13(1), 25(1)(c), 26(4) and 27(1) of the Air Navigation Order 1970(a), as amended(b), and of all other powers enabling him in that behalf, hereby makes the following Regulations.