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| AIXM version | Extension Title | Short description | Namespaces | Owner | Link |
|---|---|---|---|---|---|
| 5.1.1 | Event Specification | Coding of aeronautical data that concerns identifiable operational situations, which result in the temporary or permanent alteration of one or more aeronautical information features or of their properties. Such operational situations can range from a simple runway closure or navaid unavailability to a complex change of the route structure or a military exercise. | http://www.aixm.aero/schema/5.1.1/event | Eurocontrol | Event Extension |
| 5.1.1 | Aerodrome Surface Routing Network (ASRN) | The extension includes the aerodrome surface routing features that are not present in AIXM 5.1.1: edges and nodes. | http://www.aixm.aero/schema/5.1.1/asrn | Eurocontrol | ASRN Extension |
| 5.1.1 | ADR | European extension related to the management and sharing of Airspace data. | http://www.aixm.aero/schema/5.1.1/extensions/EUR/ADR | Eurocontrol | ADR Extension |
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