The Federal Aviation Administration announced shortly before 9 a.m. Eastern that air traffic operations were resuming at airports across the United States, following an overnight outage of the agency’s Notice to Air Missions system, which provides safety information to flight crews. The FAA had previously ordered U.S. carriers to temporarily halt all domestic flight departures as it worked to fix the technical outage, which caused nationwide travel disruptions. The FAA said its Notice to Air Missions system, or NOTAMs — which issues notices to flight personnel — had “failed,” affecting operations “across the National Airspace System.” Lawmakers in key roles overseeing the FAA said they would investigate what had caused the failure of the notification system. Read the latest through the link in our bio.