Safety and ASAS Applications Progress and Contents Ken

Safety and ASAS Applications Progress and Contents Ken Carpenter on behalf of the AP 1 team ASAS Thematic Network Second Workshop 1 page 1

SAF-ASAS u It is a paper, and it’s in draft u Drafting group is the AP 1 team reporting to the FAA/EUROCONTROL R&D Committee u This l l talk will cover purpose of SAF-ASAS progress that has been made the contents of the paper (8 slides) who to complain to u Completed ASAS Thematic Network Second Workshop version should be available in November 2 page 2

Purpose u To l l provide guidance on how to develop safe applications how to demonstrate that applications are safe u Discusses l l the problems for each category does not discuss specific applications does not try to show that ASAS is safe u Provides a review of the available methods u Discusses the use of the methods for ASAS applications u Discusses what it means for an ASAS application to be safe ASAS Thematic Network Second Workshop 3 page 3

Progress u u u Jan 2002 l work started Dec 2002 l draft version (D 1) distributed for comment l chapter 4 (‘Guidelines for safe ASAS applications’) not present l comments have been received and accommodated Aug 2003 l second draft (D 2) distributed for comment l chapter 4 complete - no chapter 5 (‘Conclusions’) l comments have been received, are being considered Nov 2003 l document complete Feb 2004 l Presentation to FAA/EUROCONTROL R&D Committee ASAS Thematic Network Second Workshop 4 page 4

Contents u Chapter 2 l the provision of safety l safety issues in ASAS applications (by category) u Chapter 3 l safety standards l design and assessment methodologies u Chapter 4 l development of safe ASAS applications l safety assessment of ASAS applications ASAS Thematic Network Second Workshop 5 page 5

The provision of safety u Same requirements for ASAS applications as any other ATM operation u ASAS l assists the provision of separation by controllers or by flight crew u ASAS applications have to meet the TLS for separation provision l proof of safety by comparison has to be justified l TLS for separation provision ~ 10 8 collisions/flight hour? u ASAS l has to support safe applications Equipment certification requirement - 10 9 collisions/flight hour ASAS Thematic Network Second Workshop 6 page 6

Safety issues in ASAS applications u Gives all the specific issues we thought of u General considerations l in addition to those listed below l human performance l ACAS u For each category l the role of ASAS in separation provision l safety issues related to roles and procedures l safety issues related to systems l safety issues related to implementation ASAS Thematic Network Second Workshop 7 page 7

Safety standards u Review of existing standards that apply to ASAS l SAE ARP 926 A, 4754, 4761; FAR & JAR AMJ 25 -1309 these are for systems l DO-264/ED 78 A Ø end to end Ø Air Traffic Services supported by communications l FAA NAS Modernization Safety Management Program l EUROCONTROL Safety Regulatory Requirements l ESARR 4 & EATMP ANS Safety Assessment Methodology u OSA l methodology central to most work on ASAS needs expansion to comply with ESARR 4 ASAS Thematic Network Second Workshop 8 page 8

Assessment methodologies u Design and human factors analysis l analytical l empirical u Risk analysis l hazard analysis l human error assessment u ICAO - collision risk assessment and separation l comparison with TLS l comparison with a reference system u Use made to date for ASAS applications ASAS Thematic Network Second Workshop 9 page 9

Development of safe ASAS applications u Recommends iterative development l concept l early specification l full specification l pre-deployment l operations u Favour l hybrid/spiral model for development process iterative loops through objectives, evaluation of alternatives, development, validation and assessment u Guidelines on addressing safety and human performance during development ASAS Thematic Network Second Workshop 10 page 10

Safety assessment of ASAS applications u Everything affects safety l the operational procedures l the decision support tools l the controllers and pilots l the communications u Guidelines offered on l operational safety analysis l technical safety analysis l spacing values and separation minima u Guidelines ASAS Thematic Network Second Workshop on each of the application categories 11 page 11

Activities versus development phase ASAS Thematic Network Second Workshop 12 page 12

Points of contact u Rose Ashford (NASA Po. C) l u Gene Wong (FAA Po. C): l u rashford@mail. arc. nasa. gov gene. wong@faa. gov Francis Casaux (EUROCONTROL Po. C) l casaux@cena. fr ASAS Thematic Network Second Workshop 13 page 13