# Event types

Subscribe to one or more of the following event types:

| Event Type                  | Description                                           |
| --------------------------- | ----------------------------------------------------- |
| `AIRPORT`                   | Airport data created, updated, or deleted             |
| `RUNWAY`                    | Runway data changed                                   |
| `AIRPORT_AVAILABILITY`      | Airport availability hours changed                    |
| `AIRPORT_AUTHORITY`         | Airport authority information changed                 |
| `AIRPORT_AUTHORITY_CONTACT` | Airport authority contact details changed             |
| `AIRPORT_NOTES`             | Airport operational notes changed                     |
| `COUNTRY_AUTHORITY`         | Country authority information changed                 |
| `COUNTRY_AUTHORITY_CONTACT` | Country authority contact details changed             |
| `COUNTRY_NOTES`             | Country operational notes changed                     |
| `FUEL_COST`                 | Fuel cost data changed                                |
| `FUEL_PRODUCT`              | Fuel product data changed                             |
| `PROVIDER`                  | Handling/fuel provider data changed                   |
| `PROVIDER_AVAILABILITY`     | Provider availability hours changed                   |
| `PROVIDER_PRODUCT`          | Provider product/service data changed                 |
| `REGION`                    | Region data changed                                   |
| `FLIGHT`                    | Flight status update (requires aircraft subscription) |


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