302 Transport
Satellite-based Communications, Navigation and Surveillance/Air Traffic Management (CNS/ATM) Systems
To comply with the Global and Regional Implementation Plans of the ICAO for satellite-based CNS/ATM systems, studies on the latest CNS/ATM developments and detailed investigations into various elements of the CNS/ATM systems continued. Satisfactory progress and results were achieved in 2004 in various technical and operational trials. On June 23, 2004, the Aeronautical Telecommunication Network (ATN) between Hong Kong and Bangkok, the first operational ATN link in the Asia- Pacific Region, started operation.
Aircraft Operations and Airworthiness
CAD has signed mutual recognition arrangements of approval of aircraft/aircraft components organisations with the CAAC, the Civil Aviation Authority of Macao and the Civil Aviation Authority of Singapore. Maintenance release certificates issued by organisations recognised under the arrangements are accepted without additional investigation by the other participating authorities.
Aircraft Noise Management
In Hong Kong, the impact of aircraft noise is assessed on the basis of the internationally accepted Noise Exposure Forecast (NEF) Contour. The determination of the contour takes into account factors including the decibel levels of aircraft noise, its tonal characteristics and the duration and frequency of overflying flights at different times of the day. Currently, the aircraft noise standard adopted in Hong Kong is the NEF 25 contour, which is more stringent than the standards adopted by some other airports.
CAD continues to closely monitor the flight tracks and noise impact on the community and implement all practicable aircraft noise mitigating measures. These measures include flight paths that cross fewer residential areas at night, noise abatement departure and approach procedures, and prohibiting the operation of noisy aircraft (i.e. those which do not comply with the stringent noise standard stipulated in Volume I, Part II, Chapter 3 of Annex 16 to the Convention on International Civil Aviation) at HKIA. Briefings on aircraft noise issues were conducted for concerned resident groups to explain the mitigating measures and the flight track monitoring work of CAD.
Improvements to the data processing capability of the computer-based aircraft noise and flight track monitoring system were completed in April 2004.
Aviation Security
The Aviation Security Ordinance and Regulation constitute the comprehensive local legislation for implementation of the conventions and agreements on aviation security promulgated by the ICAO. The Hong Kong Aviation Security Programme (HKASP), developed by the Government in consultation with the airport operators, airlines and other concerned parties, stipulates the aviation security requirements for the various operators at the HKIA. A major review of the programme was completed and a new version released in December. The implementation of these requirements
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