4.
2
and reliability needed for heavy traffic. It can only give information concerning azimuth but not range. Its accuracy is limited to +5 at best and the presence of electrical storms can interfere with the radiated signal making this facility unusable in such conditions.
The provision at Cheung Chau of very high frequency omni- range equipment will provide pilots with a direct indication of the azimuthal position of his aircraft with respect to the ground station to an accuracy of +2°. This will be free from interference by electrical storms. The new distance measuring equipment will give the pilot of an aircraft a direct reading of the slant distance from the ground station with an accuracy of at least +1⁄2 mile within a range of 200 miles. The equipment will therefore provide coverage for the west and southwest sectors of the airport in the same way as the Tathang point installation covers the east and south-east sectors.
5.
At Enclosure (1) is a paper setting out the technical con- siderations.
6.
The equipment will be purchased by Cable and Wireless on Hong Kong Government's behalf, against a reimbursement in one lump sum on completion of the purchase. The ownership of the equipment will be formally vested in the Hong Kong Government. After installation, the equipment will be maintained by Cable and Wireless in accordance with the terms of the existing agreement between the company and the Hong Kong Government. It is intended that site formation, building, access, power supply and air-conditioning will be carried out by the Public Works Department.
7.
The Government of Hong Kong applies for a grant of £46,650 to cover 50% of the cost of installing:-
(i)
a new very high frequency omni-range air navigational aid; and
(ii) new distance measuring equipment
for Air Traffic Control at Kai Tak International Airport.
project.
At Enclosure II is the Financial Summary relating to the
10/5/11
8.
Encl.
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