# Where NOTAMbriefing.com Data Comes From

> Official data on NOTAMbriefing.com: NOTAMs and airspace from EUROCONTROL EAD, AUP/UUP from the Network Manager and national AIPs, updated continuously.

NOTAMbriefing.com, https://notambriefing.com/data-sources.

## Four official sources

The data reaches the map through the DYNAM Data API, which EasyVFR runs. Sources marked Live feed the activation status in the Live tier.

| Source | What it provides | How it changes |
| --- | --- | --- |
| [EUROCONTROL European AIS Database (EAD)](https://www.eurocontrol.int/service/european-ais-database) | NOTAMs from the European states and the published airspace structure | NOTAMs are issued around the clock; airspace structure changes on AIRAC dates |
| [EUROCONTROL Network Manager B2B](https://www.eurocontrol.int/network-manager) | the Airspace Use Plan (AUP) and its updates (UUP): when reserved and military airspace is allocated (Live) | the AUP the day before operations, UUPs during the day |
| National AIPs and AIP Supplements | published activity times and temporary changes for airspace (Live) | on AIRAC dates, with supplements in between |
| Local aviation authorities | VFR manuals and local publications | as each authority publishes |

## How current the data is

The data updates continuously, around the clock: new NOTAMs and airspace activations reach the map within minutes, and an open map takes in changes without reloading. The data menu in the app shows when the data on your screen was last updated.

Airspace structure follows the AIRAC cycle: planned changes take effect on common 28-day dates. Activation changes at much shorter notice, through NOTAMs and the day's AUP and UUPs.

## What the map adds

NOTAMbriefing.com does not write or edit aviation data. It collects the official data, checks it and shows it on one map, so you see what touches your route or area instead of reading every notice.

With Live, the map also shows which published airspace is active in the time range you choose, by combining NOTAMs, the AUP and UUPs and published activity times. When the data cannot tell whether an area is active, the area keeps full emphasis.

All times are in UTC, as the sources publish them.

## The official sources stay authoritative

NOTAMbriefing.com makes a proper NOTAM briefing practical, but it does not replace the official publications. If the map and an official source ever disagree, the official source is right.

Tell us when you spot a difference: team@notambriefing.com.

## Map and software

Basemap: [OpenFreeMap](https://openfreemap.org/), [© OpenMapTiles](https://openmaptiles.org/), [© OpenStreetMap contributors](https://www.openstreetmap.org/copyright). Rendered with [MapLibre](https://maplibre.org/).

## Common pilot questions

### Is NOTAMbriefing.com an official briefing service?

No. It shows official data from EUROCONTROL and the national authorities on one map, so a briefing is quicker and you miss less. The official publications stay authoritative.

### How often is the data updated?

The data updates continuously, around the clock: new NOTAMs and airspace activations reach the map within minutes, and an open map takes in changes without reloading. The data menu in the app shows when the data was last updated.

### Which countries are covered?

More than 40 European countries. Which sources exist differs by state: AUP/UUP data exists only where a state allocates airspace through the Network Manager, and activity times depend on what each national AIP publishes.

### Where does the live activation status come from?

From NOTAMs, the AUP and UUPs, and the activity times in national AIPs and AIP Supplements. The details panel shows which source activates each area. Activation status is part of Live.

## Read more

- [Dynamic Airspace Mapping (DYNAM) explained](https://notambriefing.com/guides/what-is-dynamic-airspace-mapping)
- [AUP and UUP explained](https://notambriefing.com/guides/what-is-aup-uup)
- [How to read a NOTAM](https://notambriefing.com/guides/how-to-read-a-notam)
- [NOTAMbriefing.com feature overview](https://notambriefing.com/docs/overview)
- [DYNAM Data API for developers](https://notambriefing.com/developers)