- FAA warning system outage could cause flight delays Axios
- Main FAA Warning System, NOTAM, Is Down The New York Times
- Critical air safety system NOTAM goes down nationwide — as US reels from 2 plane crashes New York Post
- Backup NOTAM System Activated AVweb
- NOTAM outage to cause ‘residual delays’ to flights in US on Sunday: Transportation secretary Hindustan Times
