Page C2 Document NFRM 0601AS

APRIL 2007
AC 21-45(0)
AIRWORTHINESS APPROVAL OF AIRBORNE
AUTOMATIC DEPENDENT SURVEILLANCE
BROADCAST EQUIPMENT

CONTENTS
1.  
References 1

2.  
Purpose 1

3.  
Status of this AC 1

4.  
Definitions and Acronyms 2

5.  
Background 3

6.  
Applicability 3

7.  
Related Australian Reading Materials 4

8.  
Functional Requirement 4

9.  
Design, Development and Approval       of Aircraft Modifications 8 Appendix A 11 References 11 Appendix B 13 ADS-B OUT Data 13 Appendix C 14 Self Evaluation Checklist 14

Appendix D  15 Approved Equipment 15
1.  REFERENCES
Refer to Appendix A to this AC.
2.  PURPOSE
This AC is intended to define the airborne component of the 1090 Megahertz Extended Squitter Automatic Dependent Surveillance Broadcast (ADS-B) data link for use in Australia, and provide guidance and advice for the airworthiness approval of aircraft equipment proposed to support that use.
3.  STATUS OF THIS AC
This is the first AC to be written on this matter.
Advisory Circulars are intended to provide advice and guidance to illustrate a means, but not necessarily the only means, of complying with the Regulations, or to explain certain regulatory requirements by providing informative, interpretative and explanatory material.
Where an AC is referred to in a ‘Note’ below the regulation, the AC remains as guidance material.
ACs should always be read in conjunction with the referenced regulations.
11 April 2007
4. DEFINITIONS AND ACRONYMS 
AC  CASA Advisory Circular 
ADS-B  Automatic Dependent Surveillance - Broadcast 
AEEC  Airlines Electronic Engineering Committee 
AFM  Aircraft Flight Manual 
ARINC  Aeronautical Radio, Inc 
ATC  Air Traffic Control 
ATSO  Australian Technical Standard Order 
BARO  Barometric sourced data 
EASA  European Aviation Safety Agency 
ETSO  EASA Technical Standard Order 
EUROCAE  European Organisation for Civil Aviation Equipment 
FAA  Federal Aviation Administration (of the United States) 
GNSS  Global Navigation Satellite System 
GPS  Global Positioning System 
HAE  Height Above Ellipsoid 
HFOM  Horizontal Figure of Merit 
HIL  Horizontal Integrity Limit 
HPL  Horizontal Protection Limit 
IATA  International Air Transport Association 
ICAO  International Civil Aviation Organization 
JAA  Joint Aviation Authority of Europe 
JTSO  JAA Technical Standard Order 
MASPS  Minimum Aviation System Performance Standards 
MEL  Minimum Equipment List 
MMR  Multi Mode Receiver 
MODE S  Mode Select (a transponder format to allow discrete interrogation and data link capability/ selective interrogation mode of SSR 
MOPS  Minimum Operational Performance Standards 
MSL  Mean Sea Level 
NAC  Navigation Accuracy Category 
NACP  Navigation Accuracy Category for Position 
NIC  Navigation Integrity Category 

11 April 2007
AC 21-45(0): Airworthiness Approval of Airborne Automatic Dependent Surveillance Broadcast Equipment
NUC  Navigation Uncertainty Category 
POH  Pilot’s Operating Handbook 
RAIM  Receiver Autonomous Integrity Monitoring 
RTCA  RTCA, Inc (formerly Radio Technical Committee for Aeronautics) 
　
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