5.
Implementation and Review .................................................................. 12
Annex A – Consolidated Summary of Comments received, CASA’s Response and Disposition to NPRM 0601AS – Carriage and Use of ADS-B Avionics .............................................................. A1
Annex B – Final Amendment Schedules – Civil Aviation Orders (CAOs) .................................................................................... B1
Annex C – Guidance Material – Draft Advisory Circular 21-45(0)
– Airworthiness Approval of Airborne Automatic Dependent Surveillance-Broadcast (ADS-B) equipment ................................... C1
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Abbreviations
The meanings of the abbreviations that appear in this NFRM are:
AC Advisory Circular ADS-B Automatic Dependent Surveillance - Broadcast AIP Aeronautical Information Publication ATM Air Traffic Management ATS Air Traffic Services ATSO Australian Technical Standard Order CAO Civil Aviation Orders CAR Civil Aviation Regulations (1988) CASA Civil Aviation Safety Authority CDTI Cockpit Display of Traffic Information DME Distance Measuring Equipment ES Extended Squitter FAA Federal Aviation Administration (of the USA) FMS Flight Management System GA General Aviation GNSS Global Navigation Satellite System GPS Global Positioning System HFOM Horizontal Figure of Merit HPL Horizontal Protection Limit ICAO International Civil Aviation Organization IFR Instrument Flight Rules NAV Navigation NIC Navigational Integrity Category NPRM Notice of Proposed Rule Making NFRM Notice of Final Rule Making NUC Navigational Uncertainty Category RAIM Receiver Autonomous Integrity Monitoring RPT Regular Public Transport SA Selective Availability (of GPS) SARP Standards and Recommended Practices (of ICAO) SCC Standards Consultative Committee SOR Summary of Responses (to an NPRM) SSR Secondary Surveillance Radar TCAS Traffic Alert and Collision Avoidance System TSO Technical Standard Order (of the FAA) UAT Universal Access Transmitter VDL VHF Data Link WAAS Wide Area Augmentation System (of the USA)
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Final Rule Making
1. Background
1.1 NPRM 0601AS was published by CASA on 17 November 2006. The NPRM invited public comments on the regulatory proposals relating to the carriage and use of ADS-B avionics in Australia.
1.2 The objectives that the NPRM aimed to bring about were an improvement in ATM system safety and associated economic benefits for all airspace users through facilitation of ADS-B services in Australia; and to provide clear, simple and practical standards and regulatory requirements for the carriage and use of ADS-B avionics. The key proposed changes were the promulgation of operational and technical standards to ensure the safe use of the ADS-B technology.
1.3 The proposals did not require mandatory fitment of ADS-B equipment in Australian registered or foreign registered aircraft.
Present position regarding technical standards for ADS-B and for GNSS navigation position data.
1.4 The following technical information is included to provide a background to some of the comments (Comments 3, 4 and 7 in particular which appear at Annex A to this NFRM) submitted by respondents on the technical standards and CASA’s responses to those comments.
1.5 ICAO has established SARPs for ADS-B in Amendment 77 to Annex 10. These standards essentially define the protocols of the signals-in-space and the functionality to ensure global interoperability. The RTCA Inc. of the USA has specified the ADS-B avionics standards in their documents DO-260 and the later version, DO-260A. The FAA’s TSO-C166 and TSO-C166a are based on RTCA DO-260 and 260A respectively. The ATSOs for ADS-B are also based on the DO-260 and DO-260A standards. The major difference of note from Australia’s perspective between DO-260 and DO-260A is that DO-260 provides an output positional data quality parameter termed NUC while DO-260A provides for a positional data integrity value termed NIC. DO-260A also has improvements related to ADS-B IN capabilities.
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