Ground stop lifted hours after stranding thousands of flights across the U.S.
www.nbcnews.com
Transportation Secretary Sean Duffy blamed the outage on an outdated air traffic control system in which the routers “got overloaded with data.”

The Federal Aviation Administration on Friday ordered a nationwide ground stop on all departing flights “due to extraordinary circumstances and for reasons of safety.”

The unusual alert contained no other information beyond stating that “all departing traffic should remain ground stopped until further notice.”

EDIT:

The FAA lifted the ground stop at 8:15 p.m. ET…