Denver experienced a significant communication outage on Monday, leading to a brief loss of radio communications between air traffic controllers and approximately 20 pilots headed to the airport. The Federal Aviation Administration (FAA) confirmed that the Denver air traffic control center faced a 90-second communications blackout. During this period, air traffic controllers scrambled to implement backup communication systems to manage the situation. This disruption comes on the heels of similar issues at other major U.S. airports, raising concerns about air travel safety and prompting an investigation by the FAA into the radio failure. The incident left pilots without contact with air traffic control, causing significant alarm in the skies.