FAA grounds all flights in the U.S. until further notice: Reports cite air traffic control outage

First reported by Gizmodo at Thu 7:12 PM · 9 outlets in all

1. Al Jazeera3hFAA ground stop lifted: Why were US flights grounded, and what’s next?The FAA says nationwide ground stop disrupting thousands of US flights was caused by a telecommunications outage.
2. Wired(subscription required)4hThe FAA Nationwide Ground Stop Is OverThe five-hour ordeal ended Friday evening. Planes will be allowed to fly again, but the effects of the stoppage will be felt throughout the weekend.
3. Scientific American(subscription required)6hFAA grounds all U.S. flights days after expanding its AI air traffic systemNational ground stops of this kind are exceedingly rare
4. The Register8hAll US flights grounded by FAASafety reasons and unspecified communications issue cited
5. Fast Company8hFAA grounds all flights in the U.S. until further notice: Reports cite air traffic control outage
6. AP8hFAA grounds all flights across the U.S. due to air traffic control communications problems
7. PBS NewsHour9hFAA grounds all flights at U.S. airports due to air traffic control communications problemsThe nation's top homeland security official attributed the problem to a telecommunications outage and said there was no indication yet of a nefarious act.
8. Washington Examiner9hFAA imposes nationwide ground stop on all flightsThe Federal Aviation Administration halted all flight departures nationwide Friday afternoon due to a “rolling frequency outage” affecting facilities that monitor planes in the air. The cause remained unclear Friday, and Homeland Security Secretary Markwayne Mullin said Friday evening that investigators were looking into it, but suggested that a telecommunications issue caused the disruption. AIR
9. Gizmodo29hThe FAA Is Rolling Out Its AI Air Traffic Tool NationwideThe FAA has reassured the public and airlines that SMART only suggests routes and doesn't affect air safety.