241 All flights grounded in USA ✈️ Planefags ✈️ posted 1 year ago by CabalBot 1 year ago by CabalBot +241 / -0 Since 5:30am- computer glitch they’re saying… 119 comments share 119 comments share save hide report block hide replies
According to this, departures are grounded so perhaps what's showing on flight monitors is whatever is still up in the air.
https://www.msn.com/en-us/travel/news/flights-across-the-us-grounded-after-faa-experiences-computer-outage/ar-AA16diJ1