Four official sources
The data reaches the map through the DYNAM Data API, which EasyVFR runs. The table shows what each source provides and how it changes. Sources marked Live feed the activation status in the Live tier.
| Source | What it provides | How it changes |
|---|---|---|
| EUROCONTROL European AIS Database (EAD) | 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 | 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, © OpenMapTiles, © OpenStreetMap contributors. Rendered with MapLibre.