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The airport reference point, shown on St. Anthony Airport Zoning Plan No. S-2211-2 dated March 30, 1990, is determined by measuring 610 m along the centre line of runway 11-29 from the westerly end of runway 11;
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The approach surfaces, shown on St. Anthony Airport Zoning Plans Nos. S-2211-1, S-2211-2 and S-2211-3, dated March 30, 1990, are planes abutting each end of the strip associated with runway 11-29 and are described as follows:
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The outer surface, shown on St. Anthony Airport Zoning Plan No. S-2211-2, dated March 30, 1990, is an imaginary plane established at a constant elevation of 45 m above the elevation of the airport reference point, except that, where that plane is less than 9 m above the surface of the ground, the outer surface is located at 9 m above the surface of the ground.
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The strip associated with runway 11-29, shown on St. Anthony Airport Zoning Plan No. S-2211-2 dated March 30, 1990, is 300 m in width, 150 m being on each side of the centre line of the runway, and 1 340 m in length.
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Each transitional surface, shown on St. Anthony Airport Zoning Plan No. S-2211-2, dated March 30, 1990, is an inclined plane rising at a ratio of 1 m measured vertically to 7 m measured horizontally at right angles to the centre line and projected centre line of the strip, extending upward and outward from the lateral limits of the strip and its approach surfaces to an intersection with the outer surface.
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The outer limit, shown on St. Anthony Airport Zoning Plan No. S-2211-2, dated March 30, 1990, is a circle with a radius of 4 000 m centred on the airport reference point.
