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Doc 4444-RAC/501/11 Corrigendum 26/6/78 PROCEDURES for AIR NAVIGATION SERVICES RULES OF THE AIR and AIR TRAFFIC SERVICES ELEVENTH EDITION .- 1978 CORRIGENDUM To English Text Only 1. Please replace existing pages 107 and 108 printed by error by the new attached page 107. 2. Record this brriendum on page 2.
Attachment I 10 7 6.3 States should therefore ensure that, as the use of SSR progresses, both as far as cover and capability are concerned, the requirements for air-ground communications are kept under close review in order to reduce them whenever this appears warranted in the light of practical operating experience. 7. Accuracy of SSR Mode C data 7.1 The use of SSR Mode C data must take account of the following errors affecting accuracy a Correspondence Error, reflecting discrepancies between level information used on board and level information encoded for automktic transmission. The maximum value of this error has been accepted to be 2 125 feet 95 probability cf. ICAO Annex 10, Volume I, Part I, paragraph 3.8.7.12.2.5. b Flight Technical Error, reflecting inevitable deviations by aircraft from intended levels as a reaction to flight control operations, turbu- lence, etc. This error related to manually flown aircraft tends to be larger than that for aircraft controlled by automatic pilots. The previously used maximum value of this error, based on a 95 probability, is 2 200 feet cf. Report of COM/OPS Divisional Meeting 1966, Item 9, page 9-35, paragraph 4.2. It should be noted that a number of factors contributing to this value have been improved since. 7.2 The mathematical combination of the non-rela,ted errors in a and b above results in a value of f 235 feet based on a 95 probability and it is therefore believed that a value of 2 300 feet constitutes a valid decision criterion to be applied in practice when a verifying the accuracy of SSR Mode C data, b determining the occupancy of levels.
Doc 4444. RULES OF THE AIR and AIR TRAFFIC SERVICESAnnex 10. Vol 3. Edition 2. Aeronautical Telecommunications. Communication Systems. (Part I — Digital Data Communication Systems; Part II — Voice Communication Systems)Doc 4444. Edition 16. Procedures For Air Navigation Services. Air Traffic ManagementВСЕ ДОКУМЕНТЫALL DOCUMENTSAIR TRAFFIC MANAGEMENTОРГАНИЗАЦИЯ ВОЗДУШНОГО ДВИЖЕНИЯICAO ANNEXES TO THE CONVENTION ON INTERNATIONAL CIVIL AVIATION & Procedures for Air Navigation Services (PANS)ПРИЛОЖЕНИЯ И ПРАВИЛА АЭРОНАВИГАЦИОННОГО ОБСЛУЖИВАНИЯAIR TRAFFIC MANAGEMENT AND ANNEXESОРГАНИЗАЦИЯ ВОЗДУШНОГО ДВИЖЕНИЯ И ПРИЛОЖЕНИЯProcedures for Air Navigation Services (PANS)ПРАВИЛА АЭРОНАВИГАЦИОННОГО ОБСЛУЖИВАНИЯDoc 4444
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