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32

Air Regulations, 1938

is parallel to the plane of symmetry of the aircraft and directed dead ahead, and the other is directed to the right; this light must be visible at a distance of at least two miles;
(b) On the left side, a red light, fixed so as to show an unbroken light throughout a dihedral angle of 110° formed by two vertical planes, one of which is parallel to the plane of symmetry of the aircraft and directed to the left; this light must be visible at a distance of at least two miles; 
(c) At the rear, a white light, fixed so as to show astern an unbroken light throughout a dihedral angle of 140° formed by two vertical planes and bisected by the plane of symmetry of the aircraft; this light must be visible at a distance of at least three miles.
In cases where, in order to fulfill the conditions of this paragraph, the single light has to be replaced by several lights, the field of visibility of each of these lights shall be so limited that only one of them can be seen at a time.
In the case of an aerodyne with a maximum span of less than sixty-five feet, the lights prescribed in this paragraph may be combined in one or more lamps placed centrally, provided that the conditions of this paragraph as to colour and vidibility are fulfilled.

5. Every mechanically driven aerodyne, whether at anchor or moored on the surface of the water, shall display where it can best be seen, a white light visible all round the horizon at a distance of at least one mile.

2. Gliders and Free Ballons

6. (a) In all cases in which, under the rules of this Section, mechanically driven aerodynes are required to display lights, gliders shall display a red light visible so far as  practicable in all directions;
(b) A free balloon shall display a red light placed at least 16 feet and at most 32 feet below the basket and visible, so far as practicable in all directions, at a distance of at least two and a half miles.

3. Captive Balloons and Kites

7. (a) A captive balloon or kite, when flown at an altitude exceeding 200 feet above the ground, or at any altitude if it is less than three miles from