Airlines were trying to recover from a temporary outage to a critical pilot-alert system that left planes unable to depart on Wednesday, snarling thousands of flights for hours and stranding travelers across the country.
Normal air-traffic operations were “resuming gradually across the United States,” the Federal Aviation Administration said in its latest update on the issue. The resumption followed an overnight outage to the agency’s so-called Notice to Air Missions, which provides safety information to flight crews. The FAA said it continues to look into the cause of the initial problem.
