FAA grounds U.S. flights nationwide after air traffic control communications outage; nearly 7,000 flights delayed or canceled
The FAA ordered a nationwide ground stop after communications problems affected regional air traffic control centers, citing safety and extraordinary circumstances. Aircraft already airborne could land, but those on the ground could not depart; FlightAware reported nearly 7,000 delays or cancellations. The FBI was reported to be examining whether a software update caused the outage.