The Civil Aviation (Designation of Aerodromes) Order 1981
Section 29B of the Civil Aviation Act 1971 (added by section 16(1) of the Civil Aviation Act 1980) empowers the Secretary of State to designate any aerodromes for either or both the purposes of section 29 (which provides for the regulation of noise and vibration from aircraft) and the purposes of section 29A (which provides for the making of grants towards the cost of insulating buildings against noise) of the Act.