Cut Fiber Line Grounds East Coast Flights; Delays Top Six Hours

Accidentally Cut Fiber Line Triggers Travel Chaos at Major East Coast Airports

NEW YORK — An Amtrak construction crew accidentally cut a backup fiber-optic cable in New Jersey on Monday, compounding a failed primary circuit at Philadelphia TRACON and forcing ground stops and long delays at Newark, Teterboro, Philadelphia, Kennedy and LaGuardia — on the same day world leaders were flying in for the U.N. General Assembly.

FAA Administrator Bryan Bedford said Philadelphia TRACON lost its primary Verizon circuit. When controllers switched to a newly installed fiber backup, they found a break of about 600 feet between New Brunswick and Newark. Verizon told CNN contractors working next to an Amtrak rail line dug up and cut the cable. Transportation Secretary Sean Duffy blamed an Amtrak crew. Bedford said repairing the fiber could take about 13 hours; crews instead rushed a replacement circuit. Ground stops began around 10 a.m. at Philadelphia, Newark and Teterboro and later spread to JFK and LaGuardia. By late afternoon Duffy said flights were resuming at LaGuardia and Philadelphia while arrivals into Newark, JFK and Teterboro remained paused. Bedford warned Newark and Philadelphia could stay constrained indefinitely if the replacement circuit did not hold.

Reuters reported nearly 4,000 delayed flights and about 500 cancellations nationwide, with more than 1,000 delayed or canceled at Newark alone. FlightAware earlier counted more than 600 delayed flights at Newark and Philadelphia. Average delays ran past three hours at Philadelphia and more than four hours at Teterboro; NBC New York said Newark’s ground stop topped six hours. Dozens of jets sat on taxiways. Diversions included international arrivals. United’s Newark hub and American’s Philadelphia hub absorbed the heaviest hit. Boston Logan also reported delays. The outage revived criticism of aging air-traffic infrastructure after previous Philadelphia TRACON and Newark communications failures. Duffy said the episode showed why modernization funding is needed. Travelers were told to check airlines as UNGA traffic piled onto an already broken corridor.

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Cut Fiber Line Grounds East Coast Flights; Delays Top Six Hours

An Amtrak crew accidentally cut a Verizon backup fiber in New Jersey after a Philadelphia TRACON circuit failed. Newark, JFK, LaGuardia, Philadelphia and Teterboro faced ground stops. Nearly 4,000 U.S. flights were delayed as U.N. leaders arrived in New York.

An FAA telecommunications outage grounded flights at major Northeast airports on September 21, 2026, after a primary circuit failed and a backup fiber line was discovered to be severed. The backup cable was accidentally cut by an Amtrak construction crew at a construction site in New Jersey, disrupting air traffic control systems including the Philadelphia TRACON.

Affected airports included Newark Liberty International, John F. Kennedy, LaGuardia, Philadelphia International, Teterboro, and Boston Logan, with ground stops halting incoming traffic. FAA Administrator Bryan Bedford stated that repairing the massive backup fiber break would take approximately 13 hours, though a replacement circuit was being installed to restore service.

The outage caused widespread disruptions, with over 1,000 flights delayed or canceled at Newark alone and nearly 4,000 delayed flights nationwide. The incident occurred during the United Nations General Assembly, as 130 world leaders arrived in New York, highlighting vulnerabilities in the aging U.S. air traffic control system which Congress has earmarked $12.5 billion to upgrade.