1. 1 EUROCAE EUROCAE Dedicated to Aviation Standardisation ASAS Standards: “From concept to equipment” David Bowen (Technical Secretary) April 24 th 2007

2. 2 Regulator Standards ensure safety and interoperability A single standard which meets different needs Safety and Interoperability Cost (development and procurement) UserManufacturer Standards facilitate procurement Standards provide means of compliance Why Standardize?

3. 3 From Concept to Equipment Operational Application Descriptions Operational Requirements Safety and Performance Requirements High Level ATM Concept Principles of ASAS System Requirements (Interop) System Description (Architecture) Equipment Specifications The Process crosses the boundary of responsibility of various organisations which must cooperate throughout the development lifecycle

4. 4 Operational Application Descriptions Operational Requirements Safety and Performance Requirements High Level ATM Concept Principles of ASAS System Requirements (Interop) System Description (Architecture) Equipment Specifications Evidence in the Operational Approval of the ASAS Application Certification of Avionics Supporting Legislation

5. 5 WORLDWIDE AIRWORTHINESS SYSTEM SARPs (E)TSO’s TGL’s ESSARs MOPS MASPS Guidelines European Standards (IR’s and CS’s) SAE ICAO FAA RTCA ARINC EASA EUROCAE EUROCONTROL ESO’s European Commission European Regulatory Framework

6. 6 The Interoperability Legislation Community Specifications IRs ERs Essential Requirements Implementing Rules

7. 7 Document Relationships Community Specification The Essential Requirements EUROCAE Document ED-YYY Referenced Material Additional CS specific Material EUROCAE Document ED-XXX Eurocontrol Document ICAO Documents and Manuals Compliance Implementing Rules

8. 8 Concept and Context High Level ATM Concept Principles of ASAS Operational Application Descriptions Operational Requirements Safety and Performance Requirements System Requirements (Interop) System Description (Architecture) Equipment Specifications

9. 9 Concept and Context High Level ATM Concept Principles of ASAS The highest level of the end to end process is the setting of the ASAS concept in the context of the European and Global ATM Concept – Clearly in Europe this must relate to the SESAR Concept being Established today. ICAO Provisions for the use of ASAS within global ATM

10. 10 Requirements Operational Application Descriptions Operational Requirements Safety and Performance Requirements System Requirements (Interop) This relates to the ED87a methodology developed for datalink communications applications but now being applied to early ADS-B applications, including ASAS, within the RFG The Core of the Process is translating general principles to implementable applications which results in requirements on the system which enables the application.

11. 11 Requirements Methodology  ED-78A “GUIDELINES FOR APPROVAL OF THE PROVISION AND USE OF AIR TRAFFIC SERVICES SUPPORTED BY DATA COMMUNICATIONS”  This document is identical to RTCA DO-264 and the development of these guidelines was jointly accomplished by (EUROCAE) WG-53 and RTCA SC-189  The Methodology Results in the Following: – Operational Services and Environment Definition (OSED) – Operational, Safety, and Performance Requirements (SPR) Standard (developed using an operational safety assessment (OSA) and an operational performance assessment (OPA)) – Interoperability Requirements (INTEROP) Standard

12. 12 ASAS  RFG has applied this Methodology to initial (Package 1) ADS-B applications including Airborne Applications.  The first Application (ADS-B NRA) document ED-126 (including OSED, SPR and Interop) has been published (though for a GSA)  Initial Airborne applications are progressing and will be published this year.  Each Application requires significant effort and resources.  Early part of the process is operationally intensive with technical elements increasing towards the end of the process.  An iterative approach is vital.

13. 13 Equipment Standards System Description (Architecture) Equipment Specifications The final part of the process (in the technical dimension) is the specification of the system and equipments which can meet the requirements and allow implementation of the application. MASPS and MOPS (Performance Specifications) then need to be developed Equipment Specs (Interface etc) giving more details on boxes, interfaces etc may also be developed as Industry Standards

14. 14 Equipment Standards Development System Performance and Architecture ASAS Applications (SPR and Interop) Transceiver MOPS GSA ADS-B Applications Groundstation Specification Consolidation of Requirements MASPS Other Avionics MOPS Equipment Specifications

15. 15 Initial set of applications under RFG Development (Joint EUROCAE/RTCA and Eurocontrol/FAA Initiative) bringing together operational and technical expertise. Subsequent application development will link into SESAR Equipment Standards Development ASAS Applications (SPR and Interop) GSA ADS-B Applications

16. 16 RTCA SC186 and EUROCAE WG-51 continued responsibility for the equipment standards Equipment Standards Development System Performance and Architecture Transceiver MOPS Groundstation Specification MASPS Other Avionics MOPS Equipment Specifications

17. 17 Target  Operational Approval and Certified Equipment (EASA)  Compliance to the Essential Requirements and Implementing Rules (Community Specifications)  Equipment Specifications for Industry  Detailed Application Descriptions System Performance and Architecture ASAS Application Definitions Equipment Performance Specifications EASA Certification and Approval SES Interoperability Legislation Compliance

18. 18 Review  Overall Standards should cover: – Operational Descriptions and Context – Technical Requirements and Specifications  Participation in the Standards development required from: – Regulators, ANSPs and Industry  Including expertise from: – Aircrew, Controllers, Engineers and Safety Experts  Initial work in RFG must be continued in the context of the SESAR Concept to realise benefits.  For ASAS implementation, continued commitment from all stakeholders is required in the Standards Development Process – From End to End.

19. 19 Thank you EUROCAE Tel.: +33 1 40 92 79 30www.eurocae.org