Section 10

to remove or reduce in height any structure on such land which is above the height specified in such order, whether such structure was erected before or after the making of such order, or any tree

Civil Aviation 31

or other high growing vegetation, either planted in contravention of such order or likely, in the opinion of the Minister, to cause an obstruction to aircraft or to hinder the operation of any aid to air navigation; and

to take such steps in regard to, or to effect such alterations to, any structure, tree or other vegetation on any land within a controlled area, or any part of such area, as may be necessary to comply with any conditions imposed by any order under section 9 applicable to such structure, trees or vegetation or, in the case of any structure erected or tree or vegetation existing before the making of such order, which would have been applicable to such structure, tree or other vegetation if it had been erected or planted after the making of such order.

If default shall be made in complying with such notice within the time fixed by such notice, any officer authorized by the Minister, either generally or specially in that behalf, may enter upon such land and cause such action to be taken as is required by such notice, and may recover the cost of, and all expenses incurred in doing, any necessary work from the person in default.