Critical incident

DTN: US Domestic NOTAMs

Affected: SWIM (domestic) NOTAM data

Current status of DTN: Operational — live DTN status

Timeline

1. Apr 9, 2026, 01:15 UTC
   investigating
   We are currently investigating a possible issue with US Domestic NOTAMs.
2. Apr 9, 2026, 01:28 UTC
   identified
   The FAA has just sent a notification. There is an issue at the FAA, they are looking into this. This issue is upstream of DTN, issue is with FAA, the US Domestic NOTAM provider.
3. Apr 9, 2026, 03:13 UTC
   identified
   The FAA continues to work on the issues with sending US Domestic NOTAMs.
4. Apr 9, 2026, 10:11 UTC
   identified
   US Domestic NOTAM issues continue. FAA says next update will be after 1200Z.
5. Apr 9, 2026, 12:40 UTC
   monitoring
   DTN is again receiving US Domestic NOTAMs from the FAA. We are monitoring the receipt of this data.
6. Apr 9, 2026, 12:56 UTC
   monitoring
   We continue to monitor the reception of the US Domestic NOTAM files from the FAA.
7. Apr 9, 2026, 13:47 UTC
   resolved
   This issue is resolved, DTN continues to receive US Domestic NOTAMs from the FAA.

Updates as published by DTN (original).