FAA Ends Rare Nationwide Ground‑Stop After Communications Failure

Overview

• A national order that kept all departing flights on the ground began after communications instability was detected at en‑route air‑traffic control centers on Friday and officials said the step was taken for safety.
• Flight trackers and airlines reported thousands of delays and cancellations with FlightAware counting roughly 7,000 to 10,000 disrupted operations and Eurocontrol pausing flights to the United States at the FAA’s request.
• The FAA lifted the ground‑stop after more than four hours and allowed departures to resume slowly, but officials warned that large numbers of flights would remain delayed or canceled through the weekend.
• Federal agencies including the FAA, DHS, NSA, CISA and the FBI are investigating technical causes and have said there is no evidence so far of a cyberattack, while some reports point to legacy telecom gear and a possible L3Harris network update as leads under review.
• The incident highlights long‑standing problems with aging routers, switches and copper links in the air‑traffic network and prompted the FAA and White House to formally request $30.1 billion from Congress to speed system modernization.