The Federal Aviation Administration directed U.S. carriers to temporarily halt all domestic flight departures until 9 a.m. Eastern Wednesday morning, as the agency works to fix a technical outage that caused travel disruptions across the country. The FAA said earlier that its Notice to Air Missions system, or NOTAMs — which issues essential notices to flight personnel — had “failed,” affecting operations “across the National Airspace System.” Technicians were working to restore it, it said, and the ground stop was intended "to allow the agency to validate the integrity of flight and safety information.” Shortly after 7 a.m. eastern time on Wednesday, the flight tracking website FlightAware recorded 1,230 delayed flights within, into or out of the United States. It’s not clear how many of those delays are directly attributable to the outage, though passengers on social media reported flight delays and outages across the United States, from Hawaii to Washington. Read more by tapping the link in our profile.