A portion of the Denver air route traffic control center had a 90-second communications blackout Monday afternoon.

The FAA says controllers at Denver Center, which handles high-altitude air traffic, lost some radio frequencies for about 90 ...

Air traffic controllers in Denver lost contact with planes for 90 seconds earlier this week and had to use backup frequencies ...

The simulator replicates real-world conditions at ATL, including weather, visibility, and runway layouts, giving trainees ...