to execute, install, maintain, operate and, as occasion requires, to repair and alter, such works and apparatus as may be necessary for enabling such warning to be given in the manner specified in the order; and

so far as may be necessary for exercising any of the powers conferred by the order to enter upon and pass over (with or without vehicles) any such land as may be specified in the order.

cause to be published, in such manner as he thinks best for informing persons concerned, notice of the proposal to make the order and of the place where copies of the draft order may be obtained free of charge; and

take into consideration any representations with respect to the order which may, within such period not being less than two months after the publication of the notice as may be specified therein, be made to him by any person appearing to him to have an interest in any land which would be affected by the order;

that, except in a case of emergency, no works shall be executed on any land in pursuance of the order, unless, at least fourteen days previously, the proprietor of the aerodrome to which the order relates has served in the manner specified in the order on the occupier of that land, and on every other person known by the proprietor to have an interest therein, a written notice containing such particulars of the nature of the proposed works, and the manner in which and the time at which it is proposed to execute them, as may be specified in or in accordance with the order; and

that if, within fourteen days after service of the said notice on any person having such an interest, the proprietor of the aerodrome receives a written intimation of objection on the part of that person to the proposals contained in the notice, being an intimation which specifies the grounds of objection, then unless and except in so far as the objection is withdrawn, no steps shall be taken in pursuance of the notice without the specific sanction of the Secretary of State;

notice of the doing of that work is given as soon as may be to the proprietor of the aerodrome; and

the giving of warning of the presence of the building, structure or erection in the manner provided by any order under this section in force in relation thereto is not interrupted.

any order made under this section affecting any property held by such undertakers for the purposes of their undertaking shall be so framed as to avoid interference with the proper carrying on of the undertaking;

no person shall, except in a case of emergency, enter, in pursuance of such an order, upon any land held by such undertakers for the purposes of their undertaking, unless he has given to the undertakers at least three clear days’ notice of his intention so to do, and any person so entering on any such land shall comply with any reasonable directions given to him by or on behalf of the undertakers for preventing interference with the proper carrying on of the undertaking;

if any such undertakers show that, by reason of the operation of such an order, they have been obliged to take special measures for the purpose of ensuring the safety of persons so entering on any such land or otherwise acting under the order in relation to any property of the undertakers, the amount of any expenses reasonably incurred by the undertakers in taking such measures shall be paid to them by the proprietor of the aerodrome to which the order relates, and any dispute as to whether any sum is payable under this paragraph, or as to the amount of any sum so payable, shall unless the parties otherwise agree, be referred for determination to a single arbitrator appointed by the Lord Chief Justice or, in Scotland, to a single arbiter appointed by the Lord President of the Court of Session.