The Federal Aviation Administration (FAA) issued a ground stop at Newark Liberty International Airport (EWR) starting around 10 a.m. on September 21, 2026, due to an equipment outage. The interruption halted flight operations at Newark and affected flights at John F. Kennedy International (JFK), LaGuardia (LGA), Philadelphia International (PHL), and Teterboro airports during the day.
At approximately 9:45 a.m., an Amtrak construction crew working on the Delco Lead project between New Brunswick and North Brunswick, New Jersey, accidentally severed a fiber-optic cable. This fiber-optic line provided backup connectivity to the Philadelphia TRACON air traffic control center’s primary circuit, which had
already failed. NJ Transit confirmed the cable was cut about 10 feet from existing utility markings and is investigating the circumstances with Verizon and the contractor involved.
Flight Disruptions Across Northeast Airports
The ground stop at Newark was initially expected to expire at 5:45 p.m. It was extended multiple times as repair efforts continued. At JFK, a ground stop began at 12:38 p.m., later converted to delays extending until 10:59 p.m. LaGuardia’s ground stop started at 12:43 p.m. and shifted to delays lasting until 9:59 p.m. Flight restrictions also applied to Philadelphia and Teterboro airports.
Several flights already airborne at the time of the ground
stops were diverted to alternative airports, including Boston Logan Airport, which confirmed receiving multiple diverted flights. As of the latest reports, arrivals and departures remain suspended at Newark, JFK, and Teterboro, while flights to LaGuardia and Philadelphia started to resume.
Official Statements and Repair Efforts
An FAA spokesperson said the agency was pausing flights into Philadelphia International, Teterboro, and Newark Liberty International airports due to frequency issues stemming from the Philadelphia TRACON equipment outage. FAA Administrator Bryan Bedford explained the primary circuit’s failure at Philadelphia TRACON, compounded by the backup fiber-optic cable severed by the construction crew.
Bedford said the fiber break is extensive and
estimated a repair time of approximately 13 hours. He also mentioned that FAA technicians are installing a new circuit to restore the primary connection, potentially before the backup line is fixed. The primary circuit was scheduled for replacement as part of a broader air traffic control overhaul.
Newark Liberty International Airport issued a statement notifying travelers of the ongoing delays due to the FAA equipment outage and urged passengers to contact their airlines for updated flight information.
Traveler Advisories and Industry Impact
The combined failure of the primary system and backup fiber in the Philadelphia TRACON disrupted flight operations at several major Northeast airports, leading
to widespread delays and cancellations. Airlines waived some fees for flight changes related to the delays. Travelers using Newark, JFK, LaGuardia, Philadelphia, and Teterboro airports on September 21, 2026, were impacted and advised to verify flight status before traveling.
This incident highlights vulnerabilities in the aging air traffic control infrastructure, which the FAA is working to modernize. While the FAA is testing new AI-based scheduling systems elsewhere, these are unrelated to the current disruption. Repair work was ongoing at the time of report publication, with NJ Transit actively investigating and coordinating with Verizon and contractors on the fiber-optic cable restoration.
