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xNOTAM Project Overview

Learn about the need for digital NOTAM, its benefits, and the implementation plans through the AIXM 5 specification. Discover how digital NOTAM can improve safety and reduce information overload in the aviation industry.

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xNOTAM Project Overview

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  1. xNOTAM Project Overview xNOTAM Workshop #2 Brussels, 20-21 November 2007 Item 2 European Organisation for the Safety of Air Navigation

  2. Presentation objectives • Set the scene • The need for digital NOTAM • What is digital NOTAM • Benefits • AIXM 5 Specification • Implementation plans – xNOTAM Project

  3. Tendency in NOTAM world Information source: European AIS Database (EAD)

  4. Tendency in ECAC area north Slide source: European AIS Database (EAD)

  5. Tendency in ECAC area south Slide source: European AIS Database (EAD)

  6. Why Digital NOTAM PIB Dynamic/temporary data Static Data Increasing risk of information overload!

  7. NOTAM information is safety critical

  8. Closed runway example 05L 05R

  9. Work on the runway TWR ATIS PIB !?!

  10. Work on the runway 56 feet

  11. Developments/Projects that could prevent such events © TUD • On-board moving maps • airport layout • own ship position • Graphically displayed taxi route/clearance • Also needed • actual operational status of airport movement area elements • requires “digital NOTAM”

  12. What is a “digital NOTAM” • Example - TWY closure • Today, published as NOTAM A0874/03 NOTAMN Q) EBBU/QMXLC/IV/M/A/000/999/5054N00429E005 A) EBBR B) 0308250500 C) 0310271600 E) TAXIWAYS OUTER 7 AND E6 CLSD Digital NOTAM = Fully data modelled NOTAM • intended for computers • using the Aeronautical Information Exchange Model (AIXM) version 5 <OK for computers> <not OK for computers>

  13. What is a “digital NOTAM” • Instead of <text>TAXIWAYS OUTER 7 AND E6 CLSD</text> • Use explicit feature properties • For example… <taxiway> <name>OUTER 7</name> <status>CLOSED</status> </taxiway> <taxiway> <name>E6</name> <status>CLOSED</status> </taxiway> • This is a much more closer to a truly digital NOTAM • … and the goal of AIXM 5

  14. What is a “digital NOTAM” Real-time computer interpretable aeronautical information Operational concept AIXM 5 encoding

  15. What digital NOTAM could change Current text PIB • AIXM Tempdelta • Reduced TORA • WIP • Improved Pre-flight Information

  16. PIB improvements • More efficient information filtering • Based on detailed information model • Based on flight plan parameters not currently exploited by PIB • aircraft type or category • reduce the amount of retrieved information

  17. AI Service benefits • Data processes based on “change impact” rules

  18. Digital NOTAM benefits AIP AIP NOTAM NOTAM <AIXM/XML> eliminate manual re-typing of information • Efficiency avoid misunderstandings … I assume"before" the threshold rather than "beyond“ ?!… … a crane 520 m in front of THR 24 …

  19. Digital NOTAM benefits “Hello Agorians! Can one explain, how the ARC part of this restricted area should be built […]” “Draw a circle with 75Km radius, on appropriate transparent paper and same scale as chart used. Fit the circle on the chart in such a way as both points B and C (previously plotted on the chart) become part of the circle. The geodesic (WGS84) distance between B and C is 94497,25m, this geodesic being a chord of the circle.” • Another recent example of non-efficiency due to free text and manual processing (A0350/07 NOTAMNQ)VECF/QRDCA/IV/NBO/W /000/220/A) VECF B) 0704252330 C) 0704281230D) BTN 2330-1230 DLYE)ARMY AIR DEFENCE COLLEGE WILL CARRYOUT SEAWARD FRNG WI AREABOUNDED BY COORDS: A:191436N 0845342E B: 193703.4N 0852751.9E C:184603.4N 0852252E D: AN ARC OF 75KM RADIUS JOINING POINT B AND C DURING THE PERIOD OF EXER ATS ROUTES A465 AND W90 ARE REALIGNED ASFLWS. 1. ATS ROUTEA465 NOT AVBL BTN KAKID AND VVZVORALTN ROUTE KAKID- TRACK 251/071NM-BBS VOR-TRACK 242/062 DEG 072NM-MEPOL-TRACK 215/035 DEG 145NM-VVZ VOR (BIDIRECTIONAL) 2. ATS ROUTEW90 NOT AVBL BTN BBS VOR-VVZ VOR. ALTN ROUTE BBS VOR-TRACK 242/062 DEG 072NM-MEPOL-TRACK 215/035DEG 145NM-VVZ VOR (BIDIRECTIONAL)F) SFC G) F220) “... there's an ambiguity: must I draw it convex (I think so!) or concave?” “I think the times are over where we have to construct restricted areas geometrically on transparent paper, but being able to put it into some piece of software. So I think it is absolutely not practical to define an area like that […] you can interpret this in two different ways. This definition definitely misses the centre of the arc. In such cases I would draw a huge circle around all points. If nobody can say for sure how this area is built, why should the guys firing the rockets be able to tell ;-)”

  20. Digital NOTAM benefits • AIXM Tempdelta • Reduced TORA • WIP • Support “ATC safety nets”

  21. Digital NOTAM benefits • AIXM Tempdelta • Reduced TORA • WIP • Improve crew awareness / on-board “safety nets” Screenshot from digital NOTAM trial using AIXM 5 (by TUD)

  22. AMDB/xNOTAM Study Digital NOTAM Digital NOTAM Decoder “static” database • Gap Analysis ED-99A – AIXM and Prototype AIXM 5 schema • Validation of AIXM temporal model (xNOTAM) • Validation of results in real scenario in flight simulator • Use AIXM 5 message to announce temporary change • Visualise change information on cockpit display

  23. Procedure-xNOTAM Study Procedure DB Objective: To demonstrate the technical possibilities of digital NOTAM for updating Terminal Procedure data in an onboard database <AIXMMessage> … <gml:TimePeriod> <gml:beginPosition> 2007-06-01T12:00:00Z </gml:beginPosition> <gml:endPosition> 2007-06-22T23:59:00Z </gml:endPosition> </gml:TimePeriod> <aixm:interpretation>TEMPDELTA</aixm:interpretation> <aixm:lowerLimitAltitude uom="FT">4500</aixm:lowerLimitAltitude>… </aixm:AIXMMessage> From:2007-06-01T12:00:00Z Until:2007-06-22T23:59:00Z Due to temporary obstacles, minimum altitude raised to 4500 ft between RID and DF271. Operational Change digital NOTAM

  24. Prototype application Procedure xNOTAM Processor (PxP) Reads procedure data from DB including temporary changes Features an UI to interact with the displays Checks effectivity of procedure change Displays ND: plan view of approach channel PFD: 3D view of approach channel Procedure DB PxP Navigation Display (ND) Primary Flight Display (PFD)

  25. Scenario 1 Procedure transition temporarily unavailable due to temporary restricted airspace

  26. Scenario 2 Segment leg minimum altitude raised

  27. Scenario 3 Temporarily Restricted Area affects RNAV procedure; different fixes are used

  28. In summary • Digital NOTAM can provide • Increased safety - enable temporary and last minute information to be rapidly accessible and usable by the computers, therefore increasing the safety of the ATM system • Increased efficiency – eliminate human interpretation and translation • Increased capacity (enabler) – poor information quality (in its broadest sense) often results in the extension of protection volumes and surfaces, with the consequent loss of capacity

  29. The challenge • Implementation requires • Specifications • Technical - AIXM 5 • Operational • Resources • Budgets • Tools • People • Training • Coordination • Regional • Global • Etc. • The EUROCONTROL answer: “xNOTAM Project”

  30. xNOTAM Project Objectives for people for machines AIP NOTAM EAD (2007) DATA

  31. xNOTAM Project Objectives • [1] “States (AIS) to maintain and make available their aeronautical information as individual data items, in accordance with AIXM version 5. This includes both permanent and temporary changes” • [2] “To achieve a common production and distribution chain for both permanent and temporary changes” • [3] “To achieve a fully digital production and distribution chain for all AIS data products (AIP, charts, NOTAM, data sets)” • Supported by AI Team and previous xNOTAM Workshop

  32. Implementation Plans AIXM 3.3

  33. 2008: Digital NOTAM Trial • It will involve test ‘digital NOTAM providers’ from the participating NOTAM offices of the ECAC States, who will use the test system in order to generate test “digital NOTAM”, such as: • closure or limited use of airport, runway, taxiway • activation of restricted airspace, ad-hoc restrictions, etc. • closure/opening of conditional routes • North-Atlantic tracks • temporary obstacles • etc. • It will also involve test ‘digital NOTAM users’ – organisations who will try to exploit the AIXM 5 messages (digital NOTAM), which contain structured encodings about temporary situations affecting aeronautical facilities and are suitable for intelligent machine use.

  34. 2008: Digital NOTAM Trial

  35. xNOTAM Trial Home Page

  36. xNOTAM Trials

  37. US Digital NOTAM Project

  38. US Digital NOTAM SystemNear-term capability demonstration Digital NOTAM System AIXM Quality Control Common Web Services (AIXM, RSS, WMS) AIXM Publishing Candidate temporary aeronautical data AIM Database Legacy Systems (Preserve legacy investments at status quo functionality)

  39. US Digital NOTAM SystemNear-term capability demonstration Screenshot of a draft version, courtesy of FAA

  40. US Digital NOTAM SystemNear-term capability demonstration Screenshot of a draft version, courtesy of FAA

  41. Conclusion Digital NOTAM Implementation The European approach

  42. Questions?

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