Part 1: Airspace change proposals Section 4: Directions under sections 2 and 3: supplemental
Section 4 specifies that a direction under section 2 or 3 must be given in writing and published by the Secretary of State, and also that the Secretary of State may vary or revoke a direction by giving notice. A direction under section 2 or 3 is to be disregarded in so far as it conflicts with the requirements of a direction given under section 38 (directions in the interest of national security etc) or 93 (control in time of hostilities etc) of the 2000 Act, or with a direction under section 14 of the Aviation Security Act 1982.