Thousands of flights canceled after nationwide ground stop

Air traffic operations have officially resumed after a major FAA telecommunications failure triggered a nationwide ground stop on Friday while roughly 3,500 aircraft were in the air.  Over 2,500 U.S. flight cancellations  are reported on Saturday on top of Friday’s 9,000+ canceled flights and 7,000+ delays. Transportation Secretary Sean Duffy confirmed the outage was not a cyberattack, explaining that a malfunctioning router flooded FAA systems with over 1,000 connection attempts every few seconds while contractor L3Harris was upgrading aging copper lines to high-speed fiber.