(1)Subject to subsection (3) below, it shall be the duty of the CAA to provide such assistance and advice as the Secretary of State may require it to provide for him or any other person in connection with any of the Secretary of State’s functions relating to civil aviation.
(2)Without prejudice to subsection (1) above, it shall also be the duty of the CAA—
(a)to consider what aerodromes are in its opinion likely to be required from time to time in the United Kingdom in addition to, or in place of, or by way of alteration of, existing aerodromes; and
(b)to make recommendations to the Secretary of State arising out of its consideration of that matter;
and it shall be the duty of the Secretary of State to publish the recommendations (except any of them of which the publication appears to him unnecessary) in such manner as he considers appropriate for bringing them to the notice of the public.
(3)Where in pursuance of subsection (1) above the Secretary of State requires the CAA to provide assistance or advice for a person other than the Secretary of State but does not undertake to pay the CAA the cost of doing so, the CAA shall be entitled to refuse to do so until the other person pays it—
(a)in so far as provision is made in pursuance of section 11 above for charges in respect of the assistance or advice, those charges; and
(b)in so far as provision is not so made, such reasonable charges in respect of the assistance or advice as it may determine.
(4)The CAA shall be entitled to recover from the Secretary of State a sum equal to any expense reasonably incurred by it in providing him with assistance or advice in pursuance of subsection (1) above and in performing the duty imposed on it by subsection (2) above.
(5)Without prejudice to subsection (1) above, the CAA may provide for any person technical assistance and advice, including research services, with respect to any matter in which it has skill or experience.