PRM 7
|香港政府 GIS新聞處
DAILY INFORMATION BULLETIN
SUNDAY, SEPTEMBER 21, 1975.
CAD GETS MORE RESPONSIBILITIES
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THE CIVIL AVIATION DEPARTMENT HAS ASSUMED GREATER
RESPONSIBILITIES IN MAINTAINING RADIO COMMUNICATIONS WITH AIRCRAFT FLYING SOUTH OF HONG KONG.
THIS FOLLOWS THE EXTENSION OF HONG KONG'S FLIGHT INFORMATION REGION (F.1.R.) TO SOME 600 MILES SOUTH OF THE TERRITORY UNDER A CONTINGENCY PLAN WORKED OUT BY THE INTERNATIONAL CIVIL AVIATION ORGANISATION TO FILL THE GAP CREATED BY THE DISCONTINUATION OF THE FORMER SAIGON CIVIL AVIATION AUTHORITY.
UNDER THE PLAN, HONG KONG TOGETHER WITH SINGAPORE AND BANGKOK SHOULDER THE EXTRA BURDEN OF PROVIDING COMMUNICATION LINKS WITH AIRCRAFT FLYING IN THE REGION FORMERLY CONTROLLED BY THE SAIGON CIVIL AVIATION AUTHORITY.
IN HONG KONG, THE EXTRA DUTIES ARE TAKEN UP BY A GROUP OF BACK-ROOM WORKERS' IN THE TELECOMMUNICATIONS CENTRE AT HONG KONG AIRPORT.
KNOWN SIMPLY AS THE COMMUNICATORS', THEY PROVIDE ROUND- THE-CLOCK SERVICES ON BOTH AIR-TO-GROUND AND GROUND-TO-GROUND RADIO NETWORKS. USING MODERN EQUIPMENT, THEY CAN MAKE CONTACT WITH AIRCRAFT FLYING ANYWHERE IN THE F.I.R. AND WITH SUCH CITIES AS SYDNEY IN THE SOUTH, HONOLULU IN THE EAST AND BANGKOK IN THE WEST.
THE THREE MAJOR AERONAUTICAL SERVICES PROVIDED ARE THE MOBILE TELECOMMUNICATION SERVICE, THE FIXED TELECOMMUNICATION SERVICE AND THE BROADCAST SERVICE.
THE FIRST OF THESE SERVICES PROVIDES AIR-TO-GROUND LINKS ON VERY HIGH FREQUENCY OR HIGH FREQUENCY RADIO WITH AIRCRAFT OPERATION ANYWHERE WITHIN THE APPROXIMATE 167,000 SQUARE MILES CURRENTLY COMPRISING HONG KONG'S F.I.R. MESSAGES RELATE PRIMARILY TO OPERATIONAL AIR TRAFFIC CONTROL MATTERS SUCH AS POSITION REFORTS, FLIGHT LEVELS AND ESTIMATED TIME OF ARRIVALS. WEATHER INFORMATION IS SUPPLIED TO PILOTS ON REQUEST.
THE TELECOMMUNICATION NETWORK PROVIDES FOR GROUND-TO-GF OUND LINKS ON LANDLINE TELETYPEWRITER CIRCUITS (L.T.T.) AND ON RADIO TELETYPEWRITER CIRCUITS (R.T.T.), AND IS USED PRIMARILY FOR DISSEMINATION OF INFORMATION SUCH AS FLIGHT PLANS, NOTICES TO AIRMEN (NOTAMS) AND METEOROLOGICAL INFORMATION.
THIS IS THE BUSIEST OF THE THREE CIRCUITS AND LINKS SUCH ADJACENT AIRPORTS AS MANILA, TAIPEI, TOKYO, BANGKOK- J. SINGAPORE AND HONG KONG.
Issued by Government Information Services, Beaconsfield House, Hong Kong. Tel: 5-233191
ON AVERAGE,