Certification Considerations for the Implementation of

ASAS Applications on Aircraft

Kevin Hallworth: UK CAA

ASAS-TN Seminar – October 2004

ASAS TN Seminar October 2004 2

• Introduction – the total system approach

• Where are we today?

• Current JAA/EASA Activities – ASAS

• Possible Certification Issues

• Way Forward?

Scope

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Introduction – The Total System Approach

* This slide is provided by Eurocontrol and is used with their permission

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Where Are We Today?

Good News:

• All aircraft flying IFR as GAT in Mode S notified airspace must have a Mode S Transponder (with Elementary and/or Enhanced Surveillance capability) by 31 March 2005.

• Most of these aircraft will also have 1090 Mhz extended squitter enabled to provide ADS-B data (ADS-B out).

Not So Good News:

• The activation of 1090 Mhz extended squitter is not mandatory!

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Current JAA/EASA ASAS Activity• JAA CNS/ATM Steering Group has studied the certification issues concerning ASAS and will make recommendations to Central JAA/EASA – see Position Paper pp009.

• Position Paper pp009 is a mature draft that provides an overview of ASAS developments and their implications.

• Guidance for the equipage standard for each ASAS application is being considered.

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Recommendations made to JAA/EASA - pp009

1. JAA should establish a specialist sub-committee to consider the implications of ASAS developments with the objective of developing operational regulatory and guidance material with attention to Package 1.

2. The development of the CDTI should be carefully

followed with consideration of human factors, display symbology, flight deck integration, crew procedures, training and the likely impact on certification standards.

3. JAA flight crew licensing specialists should consider the impact on flight crew licensing standards that may arise from the implementation of ASAS applications.

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Possible Certification Issues

• Integration of ASAS with existing ACAS and TAWS

• Integration of Warnings and Cautions

• Human Factors

• Accident Data Recording of ASAS data

• Crew Work load

• System Architecture

• System Safety Assessment

• Compliance with Certification Specifications

• MMEL and Flight Manual

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Way Forward

• Complete the Operational Safety and Performance Assessment for both ground and airborne system.

• JAA/EASA to provide guidance for certification of ASAS functions on aircraft – this should address stand-alone and integrated solutions.

• Encourage voluntary installation/upgrade of:

ADS-B ‘in’ and ‘out’ capability and

Display of traffic information to pilots

(When sufficient guidance material is available!)

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Questions

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Acronyms

ASAS – Airborne Separation Assistance Systems

ICAO – International Civil Aviation Organisation

CNS – Communication, Navigation & Surveillance

ATM – Air Traffic Management

JAA – Joint Aviation Authorities

EASA – European Aviation Safety Agency

CDTI – Cockpit Display of Traffic Information

IFR – Instrument Flight Rules

GAT – General Air Traffic

ADS-B – Automatic Dependent Surveillance – Broadcast

MMEL – Minimum Equipment List

Cautionary Note

Any views expressed in this presentation, or references made to publications, should not be interpreted as being the current policies of EASA or any national authority.

Readers are advised to consult the latest publications of national authorities for information on applicable policies, requirements and guidance material.

Enquiries relating to the certification of aircraft systems, should be made to EASA. Enquiries relating to operational approvals should be made to the applicant’s own national authority.