[...]
The transitional surfaces, shown on Fort Frances Airport Zoning Plan No. 59-011 91-60, dated January 14, 1993, are described as follows:
-
(a) the transitional surfaces associated with runway 12-30 are inclined planes 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 or with another transitional surface of an adjoining strip; and
-
(b) the transitional surfaces associated with runway 03-21 are inclined planes rising at a ratio of 1 m measured vertically to 5 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 or with another transitional surface of an adjoining strip.
[...]