The Federal Aviation Administration has ordered airlines to pause all domestic departures in the US until 9AM Eastern time while it's restoring its Notice to Air Missions (NOTAM) system. On early Wednesday morning, the agency issued a notice through an Air Traffic Control System Command Center Advisory that the US NOTAM system has failed. "Operations across the National Airspace System are affected," the FAA said in a tweet, along with the information that it was working to fix the outage....