CRISTAL ATSAW Project Sep 2007 ASAS TN Christelle Pianetti, DSNA Simona Canu-Chiesa, Airbus

Slide 2 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Scope and objectives (1) Project partners –Airbus, DSNA & Egis Avia ( formerly Sofréavia, Project Leader ) Project performed in partnership with EUROCONTROL CASCADE (CRISTAL Initiative) Focus on three ATSAW applications Enhanced Visual Separation on Approach (ATSA-VSA) Enhanced Traffic Situational Awareness during Flight Operations (ATSA-AIRB) Enhanced Traffic Situational Awareness on the Airport Surface (ATSA-SURF) Reference documents –RFG ATSAW application descriptions, CASCADE validation plan and ATSAW validation objectives

Slide 3 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Scope and objectives (2) Five validation exercises –Two perspectives: Airborne side & ATC side –Two validation levels: Application level & Benefit level Exercise #2 ATSA-VSA Pilot & Airline perspective Exercise #4 ATSA-AIRB Pilot & Airline perspective Exercise #3 ATSA-SURF Pilot & Airline perspective Exercise #1 ATSA-AIRB (traffic filtering) Pilot perspective Airbus Exercise #5 ATSA-AIRB ATC perspective (including ATCO/pilot cooperation) DSNA

Slide 4 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Airbus Objectives Past validation activities conducted internally by Airbus allowed to : –Validate a solution from the pilot perspective –Make an Industrial and Economic assessment => Development launch decision Still some questions to be answered –What is the air traffic controller point of view? –Do we present the most interesting aircraft to the pilots in all situations? –Impact on phraseology? => Need for air/ground cooperation

Slide 5 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Traffic filtering investigation (1/2)

Slide 6 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Traffic filtering investigation (2/2) Three different scenarios –Arrival flight at CDG, cruising flight and departure flight from CDG Four design meetings with Airbus pilots –Baseline filter always well accepted –Filtering should only be adapted for non Proximate, TA or RA traffic –Maximum 8 traffic on basic display. –Preferred filter depending on pilots: Convergence based filtering is often preferred in low altitude flight phases but do not match to cruise phase (especially OTS). –Radio/Transmission based filtering was rejected. –Filtering principle should be transparent for pilots (maybe adaptive to match different contexts but automatically)

Slide 7 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Airbus RT experiments Operational evaluations of traffic display using A380 flight simulator –ATSA-VSA at a major airport (i.e. Frankfurt) –ATSA-SURF at a major airport (i.e. Paris CDG) –ATSA-AIRB during approach (i.e. Paris ACC and TMA) Four sessions in May-June 06 –All three ATSAW applications evaluated in each session by test pilots and training instructor pilots –Pilots’ feedback collected through debriefing after each scenario

Slide 8 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Airbus RT Results Confirmation of preceding evaluation results  Operational benefits in terms of Airport capacity & a/c spacing for ATSA-VSA, Safety for ATSA-SURF, Flight efficiency & management for ATSA-AIRB. –ADS-B information contribute to a better situational awareness, could decrease crew stress and situation analysis effort during all flight/ground phase. –Ease A/C identification & decrease risk of confusion between traffic. –TCAS & ADS-B information can be integrated on CDTI. –Phraseology proposed for traffic identification assumed to be useful if improved (workload, wording, etc.).

Slide 9 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 DSNA RT experiments Evaluation of ATSA-AIRB using real-time simulation facilities at DSNA –Operational use of CDTI in response to traffic information by ATC Six sessions (of one day each) in May-June 06 –Two CDG approach scenarios, two Bordeaux ACC scenarios & two Nice approach scenarios –Participation of eight ATCOs & ten pilots

Slide 10 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 DSNA RT Results (ATSA-AIRB) Evaluation of new phraseology –Option tested: No modification for the traffic information issued by the ATCO Possible use of identifier of other traffic in pilot’s answer Identifier = spelled identification C_D_T_I contact or Traffic in sight –Divided opinions of participants –Interest in sharing the information on the identifier … –But not in heavy traffic and workload situations –Spelling the call-sign is found complex, time consuming and possibly source of confusion –No specific clearance after identification of traffic

Slide 11 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 DSNA RT Results (ATSA-AIRB) Impact on controller tasks and global integration –No major impact foreseen on controllers activity –Impact only related to the phraseology, and possible abusive uses of the CDTI by flight crews –No clear trend on Radio/Transmission communication durations, workload, usefulness to know the a/c equipage –Training (or at least briefing) on the new system is requested by the controllers

Slide 12 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 DSNA RT Results (ATSA-AIRB) Impact on controller/flight crew cooperation –CDTI considered quite positively by both controllers and pilots on their cooperation –CDTI seen as a mean for the pilots to better understand the situation –And for the controllers as a mean to have more efficient communications with pilots, less pilot requests on the traffic –Both pilots and controllers raised the importance of training and the need for a clear definition of procedure to avoid abusive uses of the CDTI by the pilots.

Slide 13 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 DSNA RT Results (ATSA-AIRB) Impact on safety of flight operations –CDTI felt positive on safety by both pilots and controllers –Possible benefits: better identification of dangerous situations, better preparation to TCAS alerts –But risk of abusive uses –Training as a key issue

Slide 14 CRISTAL ATSAW, ASAS TN Toulouse, Sep 2007 Next steps CRISTAL-ATSAW final report development (Oct 07) –Summary of the main achievements –Answer to the covered ATSAW Validation Objectives –Conclusions on the feasibility and potential benefits of the evaluated ATSAW applications –Recommendations to complete validation and progress with their implementation