1 / 13

CARE-ASAS Activity 3: ASM Autonomous Aircraft OHA

CARE-ASAS Activity 3: ASM Autonomous Aircraft OHA. Objectives and tasks. Objectives: Qualitative assessment of operational hazards related to Autonomous Aircraft (AA) operations Identification of “safety-influencing factors” R&D work, not definitive results Tasks:

bella
Télécharger la présentation

CARE-ASAS Activity 3: ASM Autonomous Aircraft OHA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. CARE-ASAS Activity 3: ASMAutonomous Aircraft OHA CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  2. Objectives and tasks • Objectives: • Qualitative assessment of operational hazards related to Autonomous Aircraft (AA) operations • Identification of “safety-influencing factors” • R&D work, not definitive results • Tasks: • High-level description of operational procedures and CNS/ASAS functions based on AA-OSED • Analysis of operational failure scenarios • Consolidation of risk mitigation measures CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  3. Customised OHA method Customised OHA method to facilitate identification of factors that may directly or indirectly impact the Airborne Separation Minima CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  4. Phase Next phase Condition Title Functions P0 Surrounding traffic surveillance and monitoring (air-air) CNS, CD, ASAS display P0 P1 C0 Conflict detected ASAS operations description CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  5. Operational failure scenarios • Failure conditions related to system functional characteristics and operational procedures: • Various failure modes either related to system functions or human operations: • Detected/undetected loss, incorrect/misleading (erroneous detected/ undetected) function (or information) • Lack of (or inability), incorrect/misleading operation (or human action) • Operational failure scenarios assessment: • Effects on operations, detection and correction means (with associated (ASS, SR, REC) • Resulting operational consequences (OHs) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  6. Effects on flight deck, air traffic control and operations Possible cause with environmental factors Safety influencing factors Operational hazard description CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  7. Identified operational hazards • During normal evolution in FFAS: • Aircraft flying in FFAS without or with degraded CNS capabilities (OH 1 to OH 6) • During normal CD&R in FFAS: • Missing, delayed or incorrect CD&R by aircraft that has (or does not have) priority during conflict in FFAS (OH 7 to OH 12) • Induced conflict by aircraft manoeuvring in FFAS (OH 13,14) • During abnormal operations in FFAS: • Multiple OHs in FFAS (OH 15) or during abnormal exit of FFAS (OH 16,17) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  8. Main OSED mitigations (1/2) • Aircraft flying in FFAS without RNAV/ASAS capability: • Segregated FFAS airspace with only suitably equipped aircraft with qualified flight crew (ASS/ENV 1 ) • Including 4D RNAV, ADS-B transmitter/receiver, ASAS based on ADS-B only, and CDTI equipment • Including priorities rules defining which aircraft in conflict has to manoeuvre (ASS/OPS 1 ) • Emergency procedure in case of an ADS-B/ASAS, or navigation, system failure (ASS/OPS 9, ASS/OPS 10) • Aircraft in emergency situation has right of way over interfering traffic in FFAS (ASS/OPS 11) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  9. Main OSED mitigations (2/2) • Aircraft co-operation during CD&R process in FFAS: • Flight crews’ monitoring of conflict resolution (ASS/OPS 7 ): • Assisted by both aural and visual alarms at TLow minutes before potential loss of separation (ASS/SYS 1) • Increasing alarm levels (respectively at TMedium and THigh minutes) before potential loss of separation (ASS/SYS 2 ) • Flight crews’ agreement on a common resolution strategy: • In case of incompatible aircraft priorities during a conflict (ASS/OPS 3) • If the conflict is not solved TMedium minutes before loss of separation(ASS/OPS 5) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  10. Additional OHA mitigations (1/3) • Aircraft flying in FFAS with degraded ASAS capability: • Independent ADS-B emission and reception capabilities (SR/SYS 1) • To allow the “see or being seen” principle even in case of one aircraft failure • Alerting mechanism in case of ASAS system failure (SR/SYS 6) • Additional recommendations even in conflict-free situations: • Flight crews’ monitoring of surrounding traffic (REC/OPS 1 ) • ASAS alerting when an aircraft in proximity is suddenly no more detected(REC/SYS 4 ) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  11. Additional OHA mitigations (2/3) • Aircraft flying in FFAS with degraded navigation capability: • Different separation minima depending on Actual Navigation Performances (ANP) of the aircraft (SR/ENV 2) • Emergency procedure applied in case of inappropriate ANP within FFAS (SR/OPS 3) • Alerting mechanism in case of 4D RNAV navigation system failure (SR/SYS 5) • Display of uncertainty associated with ADS-B traffic position on CDTI (REC/SYS 5 ) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  12. Additional OHA mitigations (3/3) • Potential loss of separation in FFAS: • At that THigh minutes before potential loss of separation: • Additional rules of flight applicable within FFAS (SR/ENV 1) • Flight crews manoeuvring of their aircraft independently from their assigned priority using applicable rules of flight in FFAS (SR/OPS 8) • Based on independent surveillance: • Alerting mechanism in case of any (imminent) loss of separation (SR/SYS 7) • Conflict information to the flight crew in case of (imminent) loss of separation (SR/SYS 8) CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

  13. Main OHA results OHs (17) with severity assignment&Safety influencing factors including OPS (27), SYS (22), ENV (6) with ASS (28), SR (20), REC (7) • Mainly related to “airborne self-separation” inside FFAS • More in-depth analysis of aircraft system failure scenarios than human-related errors CARE/ASAS Activity 3: ASM workshop Brétigny, 19 December 2001

More Related