This will be moved under the shared coding rules of the AIXM coding space. It will provide general coding rules for Events. Rules that are specific for the coding of Digital NOTAM will be as much as possible provided in the Digital NOTAM Specification, not here.

Introduction

The use of Event features in relation with other aeronautical information feature changes has two main purposes:

  • to allow relating the changes that have a common cause or a common operational goal and to provide relevant metadata, such as compliance with a predefined change scenario, relation with other events, etc.
  • to facilitate the provision of change notifications, for example in pre-flight information bulletins. This is currently done through NOTAM. However, even in the absence of NOTAM, the Event feature would still provide a readable description (summary) for pre-flight bulletin entry and other similar briefing purpose.

No specific message was created for encompassing an Event and the associated data. The AIXMBasicMessage can be used for this purpose, because the Event feature is also an abstract AIXMFeature. Thus, it can be used as a child of hasMember elements.

Explain use case for the "digital" attribute

- only Events with digital=YES can be automatically verified for completeness/correctness of the coding;

- events with digital=NO could still have some digital data elements (such as location, geometry, etc. Such limited data could still be useful for graphical display for example, but should be visually distinct, because the data is very likely incomplete and possibly imprecise.


Explain the use case for the "summary" attribute

  • A textual/formatted description of the Event could be used as ePIB entry, even if there is no NOTAM issued for the Event. That would open the path for the NOTAM system revision - allow certain events to be coded only digitally, without having to be issued as NOTAM. If necessary, such events could still be included in preflight briefings or other reports intended for operational staff, using the "summary" property to provide the text.