Handling of obstructions
26.—(1)  A certified operator of an aerodrome must remove from the surface of the aerodrome any vehicle or any other obstruction that is likely to be hazardous to aircraft operations at the aerodrome.
(2)  A certified operator of an aerodrome must not permit any structure in the aerodrome to exceed the obstacle limitation surface and must take reasonable measures within the certified operator’s power to prevent any other structure from exceeding the obstacle limitation surface, except in the case of —
(a)any frangible structure which, by virtue of its function, must be located on the runway strip;
(b)any structure which is shielded by another object in accordance with the Aviation Specifications; or
(c)any structure which, after aeronautical study, is determined not to adversely affect the safety of or significantly affect the regularity of operations of aircraft at the aerodrome.