237038-1937-Air-Navigation-Colonies-Protectorates-and-Mandated-Territories--Amendment-Order-1937 — Page 13

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THE HONG KONG GOVERNMENT GAZETTE, NOVEMBER 12, 1937.

(4) By way of exception to the provisions of this paragraph, captive balloons and kites used for meteorological observation which, owing to their insufficient static lift, cannot display the lights and signals required by this paragraph to be' displayed may be flown, but only over areas which are notified as danger areas by notices to airmen. In every such case the position of the object to which the captive balloon or kite is moored on the ground shall be marked as required by sub-paragraph (1) (c) of this paragraph.

Airships.

9.--(1) Except as provided in the next following paragraph, an airship when under way shall display the following lights :—

(a) forward, a white light, fixed so as to show forward an unbroken light, visible at a distance of at least 5 miles, throughout a dihedral angle of 220° formed by two vertical planes and bisected by the plane of symmetry of the aircraft;

(b) on the right side, a green light fixed so as to show an un- broken light, visible at a distance of at least 5 miles, throughout a dihedral angle of 110° formed by two vertical planes, of which one is parallel to the plane of symmetry of the aircraft and directed dead ahead, and the other is directed to the right;

(c) on the left side, a red light fixed so as to show an un- broken light, visible at a distance of at least 5 miles, throughout a dihedral 110° formed by two vertical planes, of which one is parallel to the plane of symmetry of the aircraft and directed dead ahead, and the other is directed to the left;

(d) at the rear, a white light fixed so as to show astern an unbroken light, visible at a distance of at least miles, throughout a dihedral angle of 140° formed by two vertical planes and bisected by the plane of symmetry of the aircraft.

(2) In a case where, in order to comply with the foregoing provisions of this paragraph, a single light has to be replaced by several lights, the field of visibility of each of those lights shall be so limited that only one can be seen at a time.

10.(1) An airship which is under way and which is not under control, or which has voluntarily stopped its engines, or which is being towed, shall display the following lights :-

(a) the forward and rear lights specified in sub-paragraphs (1) (a) and (1) (d) of the last foregoing paragraph;

(b) in addition, below the airship, two red lights placed vertically one below the other 12 feet apart, the upper light being 25 feet below the control car, and both being visible, so far as practicable, in all directions at a distance of not less than 24 miles;

(c) in addition, if making way but not otherwise, the side lights specified in sub-paragraphsi (1) (b) and (1) (c) of the last fore- going paragraph.

(2) By day, an airship in the circumstances mentioned in sub- paragraph (1) of this paragraph shall display a group of two black balls or shapes, each at least 2 feet in diameter, placed vertically one below the other 12 feet apart, the upper one being 25 feet below the control car, and both being visible, so far as practicable, in all directions.

Where necessary, in order to comply with the foregoing pro- visions of this sub-paragraph, the said group of two black balls or shapes may be duplicated.

11.-(1) An airship when moored to a mooring mast shall display at or near the rear a white light visible, so far as practic- able, in all directions at a distance of at least 3 miles.

(2) An airship, when moored to the ground or the surface of the water by a cable, shall display, forward, the white light specified in sub-paragraph (1) (a) of paragraph 9 of this Schedule and at the rear the white light specified in sub-paragraph (1) (d) of that paragraph, and in addition the airship and its mooring cable shall be lighted or marked in accordance with such of the provisions of paragraph 8 of this Schedule as are applicable in the case of a captive balloon.

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