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Today in aviation

Air traffic control

A severed fiber line grounds five Northeast airports

A construction crew cut a fiber line carrying the Philadelphia TRACON's primary and backup circuits at once, forcing ground stops at Newark, JFK, LaGuardia, Teterboro and Philadelphia and canceling more than a thousand flights.

21 September 2026

A construction crew working near New Brunswick, New Jersey, severed a fiber optic cable on the morning of 21 September 2026 that carried telecom circuits for the Philadelphia TRACON, the radar approach control facility that handles traffic for the New York and Philadelphia region. Both the primary circuit and its backup failed at the same time. The FAA ordered ground stops at Newark Liberty, Teterboro, Philadelphia International, LaGuardia and JFK.

More than a thousand flights were canceled nationwide and over six thousand were delayed before repairs were completed later that day, with full restoration taking up to thirteen hours. The outage landed on the first day of the United Nations General Assembly's high level week in Manhattan, adding to the disruption in the corridor.

Responsibility for the cut is disputed. Verizon said an Amtrak contractor severed the line. Amtrak said the work was done by a New Jersey Transit contractor on New Jersey Transit property. Transportation Secretary Sean Duffy confirmed the cause publicly and renewed calls for funding to modernize aging air traffic control telecom infrastructure, much of which still depends on single circuits rather than diverse, redundant paths.

In plain terms

A TRACON is the facility that sequences and separates aircraft approaching and departing a region's airports before they reach each airport's own tower. When its data connection to the wider system fails, controllers lose the surveillance and coordination tools they need, so the FAA stops departures bound for the affected airspace until the connection is restored.

Sources