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AGA - 4.0 OBSTACLE RESTRICTIONS

4.1 General

The safe and efficient use of an aerodrome, airport or heliport can be seriously eroded by the presence of obstacles within or close to the takeoff or approach areas. The airspace in the vicinity of takeoff or approach areas (to be maintained free from obstacles so as to facilitate the safe operation of aircraft) is defined for the purpose of either:

(a) regulating aircraft operations where obstacles exist;

(b) removing obstacles; or

(c) preventing the creation of obstacles.

4.2 Obstacle Limitation Surfaces

4.2.1 General

An obstacle limitation surface establishes the limit to which objects may project into the airspace associated with an aerodrome and still ensure that aircraft operations at the aerodrome will be conducted safely. It includes a take-off/approach surface, a transitional surface and an outer surface.

Obstacle Limitation Surfaces

4.2.2 Heliports

Heliports are normally served by two approach and departure paths. In some instances, only one approach and departure path may be established and will have the additional requirement for a transition surface.

Approach and Departure Paths

 

4.3 Airport Zoning Regulations

4.3.1 General

An Airport Zoning Regulation is a regulation respecting a given airport pursuant to section 5.4(1) of the Aeronautics Act for the purposes of:

(a) preventing lands adjacent to or in the vicinity of a TC airport or airport site from being used or developed in a manner that is, in the opinion of the Minister, incompatible with the operation of an airport;

(b) preventing lands adjacent to or in the vicinity of an airport or airport site from being used or developed in a manner that is, in the opinion of the Minister, incompatible with the safe operation of an airport or aircraft; and

(c) preventing lands adjacent to or in the vicinity of facilities used to provide services relating to aeronautics from being used or developed in a manner that would, in the opinion of the Minister, cause interference with signals or communications to and from aircraft or to and from those facilities.

NOTE: An Airport Zoning Regulation applies only to land outside the boundary of the airport protected by the Airport Zoning Regulation. Obstacles within an airport boundary must not penetrate an obstacle limitation surface for the runway(s) involved unless the obstacle is exempted as the result of an aeronautical study.

4.3.2 Airports Where Zoning Regulations are in Effect

A list of airports where Airport Zoning Regulations are in effect is maintained in the Regional Aerodrome Safety office.

Date modified:
2012-03-27