1. AIXM 5.1 – Interoperability issues
AIXM CCB – Webex 13 october 2017

2. Agenda Interoperability rules for ICAO data sets Metadata requirements
Open points
Metadata requirements
in relation with the AIP Data Set
in relation with data collection
Feature identification properties list

3. Interoperability scenarios
Reason for scenarios
Some interoperability issues (such as discordant UUID) are likely to have different solutions in different use cases
If this is not really the case, the scenarios could be merged in the end…
Proposed scenarios (in the order of priorities)
AIS publishing data under ICAO SARPS (including provision of data to DAT providers or to another ANSP)
Hub scenario (EAD, other regional implementations)
Including data coordination with other hubs
Data originator(s) to/from ANSP (particular case – procedure designer, airport data originator)
Other possible scenarios (for later)
Data merge between FIXM, AIXM and iWXXM data sets
Large scale SWIM interoperability exercises using multiple non-coordinated data sets (such as in the SESAR or FAA demonstrations)
Use of AIXM data for simulators?
Digital NOTAM (world-wide)
IMP “services”

4. AIP Data SET Use Case Technical Interoperability rules
Mature content - available for public comments on the new Confluence web site
No comments yet
Drafting area in Google Drive – for the participants in this working group
Open issues
See “suggested text in the document”…

5. Metadata
Main issues
Unclear which metadata should actually be provided by originator to AIS and further to the next intended users
Current Annex 15, ADQ regulation (in Europe), etc.
New Annex 15 / PANS-AIM – a new basis for discussions
The ISO XML schema
extremely complex
extremely verbose
embedded in the GML schema

6. Metadata Working directory created in Google Drive
Initial discussion on 18 July - Actions
Eurocontrol (Scott Wilson) -> analysis and proposal
[input] Metadata requirements - AIP Data Set
[proposal] Analysis of ICAO metadata requirements
[proposal] ICAO metadata requirements - mapping and encoding (ISO)
FAA -> map the FAA metadata model to ISO 19115
Done, can it be shared?
Everyone -> comments in Google Docs
FAA comments on one of the previous OGC , can it be shared?

7. ICAO Metadata Analysis

8. METADATA Proposed way forward
Use the two documents prepared by Scott Wilson as main working documents because they are directly targeting the ICAO Data Set
[proposal] Analysis of ICAO metadata requirements
[proposal] ICAO metadata requirements - mapping and encoding (ISO)
Objective – final proposal before mid October
To be included in the AIP Data Set coding guidelines (Confluence)
Consider the FAA metadata model, Europe ADQ and other regional metadata requirements as “extensions”
Deal separately with the following topics (in this order of priorities)
Data product specification (metadata)
In principle, this is once for all data sets of a certain kind, not provided with each actual data set. To be confirmed.
Data collection metadata

9. Feature identification properties
What for
ICAO Data Sets
Identify duplicates by “natural key” (data verification rules)
Use in xlink:title?
Use for creating a human-readable summary of data set?
Possible to implement as a service (with XSLT scripts)
Other use cases
Support applications that work with natural keys?
Work in progress

10. Global issues list No new enties
Needs a clean-up…

11. Next meeting Next Webex TUE 14 November 14:30 – 16:30 Brussels time
Work items topics expected to progress in the meantime
AIP Data Set open interoperability topics
Metadata requirements / solution for AIP Data Set
Feature identification properties list