237350-1937-Air-Navigation-Colonies-Protectorates-and-Mandated-Territories-Order-1927 — Page 34

THE HONG KONG GOVERNMENT GAZETTE, DECEMBER 17, 1937. 953

(a) As to lighting of obstructions :---

Fixed red lights shall be displayed

(i) on all obstructions within the landing area which constitute a danger to aircraft in motion on the landing area;

(ii) as far as possible, on all obstructions within 1,000 yards of the boundary of the landing area and constituting a danger to aircraft approaching or leaving the aerodrome in a normal manner. In case it should be impossible to exhibit fixed red lights on such obstructions, the horizontal projection and the centre of the obstruc- tions shall, as far as possible, be clearly indicated by synchronised red flashing or occulting lights, placed on a level with or near to the ground.

(b) As to lighting of landing T and of wind indicators:

The landing T if used, and at least one of the wind indicators shall be illuminated with fixed lighting, preferably white.

(c) As to lighting of signals:—

The signals displayed in the signal area and also the signals referred to in sub-paragraphs (3), (4) and (5) of paragraph 15 of this Schedule, when used and wherever displayed, shall be suitably illuminated.

(d) As to lighting of landing area:

(i) The landing area or the part thereof on which landings should be made shall be illuminated, if possible, by a floodlight or floodlight system during landing manoeuvres;

(ii) In default of such method of illumination as aforesaid, one of the two following alternative methods of illumination shall be used:-

First method:

There shall be laid out on the ground a line of lights, spaced 50 yards apart, consisting of a central section of six white lights, to indicate that landings should be made on the adjacent portion of the landing area and on either side of the said line, and at least two green lights at one end of the said line and at least two red lights at the other end of the said line, to indicate that landings should be made from the direction of the said green lights towards the said red lights;

Second method :·

There shall be laid out on the ground lights in the form of a 'T', the shaft of which shall be composed of at least four lights in a line at least 250 yards in length. The light at the foot of the T shall indicate the place where a flying machine or glider should first make contact with the ground and the cross arm of the T shall indicate the place where it should finish its run. Landings may be made on either side of the shaft of the T but always parallel thereto, provided that, in the event of the area situate on either side of the shaft of the T becoming obstructed, the light indicating the cross arm of the T on that side shall be removed and landing shall be effected on the opposite side of the shaft of the T.

If either of the two alternative methods of illumination referred to above is used, the landing T shall not be displayed.

(e) As to approach lighting:--

The most favourable sectors of approach to the landing area may be indicated by green lights.

f) As to boundary lighting:

-

The boundary of the landing area shall be marked by fixed aviation-yellow lights, normally laid out 100 yards apart:

Provided that: -

[Schedule IV,-contd.]

(i) when there are obstructions on the boundary of the landing area, the lights serving to mark such obstructions may take the place of boundary lights;