History — 301.06

301.06 (1) Except where the direction of the wind at an aerodrome can be determined by radio or other means such as smoke movement in the air or wind lines on water, the operator of the aerodrome shall install and maintain at the aerodrome a wind direction indicator that is (a) of a conspicuous colour or colours; (b) in the shape of a truncated cone; (c) visible from an aircraft flying at an altitude of 300 m (1,000 feet) above the wind direction indicator; and (d) illuminated when the aerodrome is used at night. (2) When an aerodrome is closed permanently, the operator of the aerodrome shall immediately remove all of the wind direction indicators installed at the aerodrome.