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4.3 OTHER OBJECTS

4.3.1 General

4.3.1.1 Recommendation - Objects which do not project through the take-off/approach surface but which would nevertheless adversely affect the optimum siting or performance of visual or non-visual aids should, as far as practicable, be removed.

4.3.1.2 Recommendation - Anything which in the opinion of the certifying authority after aeronautical study, endanger aircraft on the movement area or in the air within the limits of the outer surface should be regarded as an obstacle and should be removed in so far as practicable.

Note - In certain circumstances, objects that do not project above any of the surfaces enumerated in 4.1 may constitute a hazard to aircraft as, for example, where there are one or more insolated isolated objects in the vicinity of aerodrome.

4.3.1.3 Standard - Any transportation corridor underlying an Obstacle Limitation Surface shall be considered as an object. As a minimum, 4.3 m shall be allowed above the crown of a road and for a railway, 6 m above the top of the rails. The height to be allowed above a waterway, river, canal, etc. shall be established by Aeronautical Study.

Date modified:
2010-05-21