Flights across several major East Coast airports were halted on Monday, September 21, 2026, due to an equipment outage stemming from a cut fiber optic cable. The Federal Aviation Administration (FAA) issued ground stops at airports including Newark Liberty International (EWR), John F. Kennedy International (JFK), LaGuardia Airport (LGA), Philadelphia International (PHL), Teterboro, Westchester County, and Boston Logan International. This disruption was caused by a circuit failure at the Philadelphia Terminal Radar Approach Control (TRACON) facility. When the system attempted to switch to its backup, it was discovered that the fiber optic cable for the backup had been severed at a construction site in New Jersey.
FAA Administrator Brian Bedford stated that the primary circuit at Philly TRACON failed, and the subsequent activation of the backup system revealed the damaged fiber optic cable. Transportation Secretary Sean Duffy acknowledged that such equipment outages are not new and that the department has been working to upgrade FAA equipment and its telecommunications architecture. However, he noted that the work is ongoing and progress could be hastened with additional funding. The outage primarily affected frequencies and radar links at Philadelphia TRACON, an essential facility for managing aircraft approach and departure traffic in the region.
The ground stops led to significant flight delays and diversions. By 1 p.m. ET, over 600 flights at Newark and Philadelphia, representing approximately 20% of scheduled flights, had been delayed. Newark serves as a major hub for United Airlines, while Philadelphia is a key hub for American Airlines. The disruptions coincided with the arrival of 130 world leaders and numerous ministers in New York for the annual United Nations General Assembly high-level meeting. The FAA website provided estimated times for lifting the ground stops, with some as early as 2:45 p.m. ET, though the fiber optic cable repair was expected to take around 13 hours.
This incident follows previous telecommunications outages impacting air traffic control. In May 2025, the facility guiding air traffic at Newark Airport experienced significant communication issues. Additionally, Congress approved $12.5 billion last year to address the aging air traffic control system and boost controller hiring. The issue in the U.S. also coincided with flight disruptions in the United Kingdom due to a separate "connectivity issue" at Nats' Prestwick center in Scotland, affecting airports like Edinburgh, Leeds Bradford, Belfast, and Manchester, impacting thousands of passengers. reuters.com, foxbusiness.com, abcnews.com, nypost.com, independent.co.uk
