31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

2.2 The acceptable coding options are as follows:Application Identification Data ProtocolsELTs (Aviation) Unique ELT Serial Number * Serial User- Unique ELT Serial Number * User-LocationNote:(*) Serial number means a unique number assigned by a beaconmanufacturer. Assigned serial numbers must provide a uniquebeacon identification when used with the Country Code. Serialnumbers assigned by a manufacturer must provide a unique beaconidentification when used with the Cospas-Sarsat type approvalcertificate number assigned to that beacon model. The Cospas-Sarsat type approval certificate number is required to be encodedinto the beacon identification in order to signify the equipment is aCAD approved type.2.3 The detail of the abovementioned coding methods is available in Chapter 3 ofCospas-Sarsat G.005 document.2.4 The Country Code used for Hong Kong Aviation ELTs must be 477 (threedigitdecimal country code assigned by International TelecommunicationUnion (ITU) to Hong Kong Special Administrative Region of China).3 Registration3.1 All 406 MHz ELTs must be registered with the Hong Kong Civil AviationDepartment, even if not fitted to an aircraft. Many ELTs are inadvertentlyactivated when in storage or transit, and these false alerts invariably result inSAR action if the owner cannot be identified and questioned. It is of extremeimportance that a 24-hour telephone contact number is provided whenregistering ELTs. The form to be used when registering ELTs is DCA 406,which is obtainable from the address shown in paragraph 1.1.3.2 Whenever an ELT is replaced, re-registration is required to be made as perparagraph 3.1.4 CancellationThis Notice Appendix cancels Airworthiness Notice No.27 Appendix No.1 Issue 2,dated 30 September 2002, which should be destroyed.30 May 2007 AN-27A1 P.2