All flights in the United States are grounded until further notice, “due to extraordinary circumstances and for reasons of safety,” the Federal Aviation Administration said. The issue stems from a telecommunications outage, but an airline source told CNN the root cause is still unclear.

UPDATE: Domestic US flights are being allowed to depart again after federal officials issued an hours-long ground stop due to safety concerns from a telecommunications outage.

They are blaming old technology. Couldn't be due to anything like the Microsoft outage the day before or the AI upgrade installed a couple of days before or movement to use Musk's technology (paying him more billions) or just about anything else???

UPDATE: Secretary of Transportation update, could have been a router, or a contractor changing out copper for fiber, a change from analog to digital?!?!?!

Oh my... Maybe he needs to go on another road trip.

Note: as a House member, Secretary of Homeland Security, Markwayne Mullin, voted against Biden's Infrastructure and Jobs Act that included $25 billion to upgrade airports, including air traffic towers and systems.