An Amtrak construction crew accidentally severed a 600-foot backup fiber-optic cable in New Jersey on Monday, causing a massive telecommunications outage that forced the Federal Aviation Administration to ground and delay flights across major East Coast airports.
Air travel along the Eastern Seaboard suffered widespread disruption on Monday after a railway construction project intersected with critical aviation infrastructure. The damage crippled the Terminal Radar Approach Control system used to guide planes during takeoff and landing, prompting emergency ground stops at major aviation hubs in New York, New Jersey, Pennsylvania, and Massachusetts.
Airports Grounded and Delayed Across the Northeast
The sudden equipment failure rippled across the region’s busiest transit centers. Ground stops and severe delays hit airports in New York, Pennsylvania, New Jersey and Massachusetts during Monday afternoon. Newark Liberty International Airport in New Jersey bore the brunt of the chaos. Flight-tracking data reported that 267 departing flights were delayed alongside another 257 incoming flights destined for the hub.
Operations also ground to a halt at John F. Kennedy International Airport, LaGuardia Airport, Philadelphia International Airport, Teterboro Airport, and Westchester County Airport. The Federal Aviation Administration confirmed that ground stops were issued at Newark Liberty, Philadelphia International, John F. Kennedy International, LaGuardia, Teterboro, and Westchester County airport. New York’s JFK airport posted on social media that Due to an FAA equipment outage, arrivals and departures are currently experiencing delays at #JFK. Please contact your airline for flight status
while the disruption unfolded.
Major carriers scrambled to adjust operations. United Airlines reported that the infrastructure failure impacted carriers across the entire Northeast and confirmed it issued travel waivers for impacted passengers in Newark, noting that affected flights were either held at departure airports or diverted elsewhere.
How a Routine Construction Cut Cascaded Into an Aviation Crisis
Federal transport officials traced the root cause of the crisis to an incident in New Jersey. Transportation Secretary Sean Duffy announced on social media that an Amtrak construction crew accidentally cut into a fiber line in New Jersey, which caused a telecom outage and forced FAA to pause flights in the Northeast. Aviation Administrator Brian Bedford told reporters that the severed fiber-optic cable measured 600 feet long, remarking bluntly that Someone dug it up
.

Officials revealed that the severed fiber line served as a backup network, meaning the initial circuit failure went unnoticed until controllers attempted to switch over, only to find the redundancy disabled by the construction crew.

We know these problems can happen. We know these cuts can happen. As we work through all the new equipment, all the new architecture of our telecom, which is fans, it all takes money. That’s why we have a holistic view of everything, including how we rework our telecom.
Sean Duffy, Transportation Secretary
Verizon, which owns the damaged cable, stated it was working to repair the infrastructure as quickly as possible
while emphasizing that the telecommunications company bears no responsibility for the excavation accident. Repair estimates indicated the restoration work would take approximately 13 hours to complete.
Infrastructure Strains Meet High-Stakes Timing
The timing of the collapse occurred ahead of the United Nations General Assembly in New York City, which is expected to be attended by scores of world leaders arriving into New York-area airports.
While aviation officials managed to gradually resume outbound traffic at select locations such as LaGuardia and Philadelphia, flights into Newark, JFK, and Teterboro remained paused. Secretary Duffy pointed to the incident as a warning regarding the state of domestic transport networks, concluding that this incident underscores the need for additional funding to modernize aging infrastructure and prevent disruptions like this in the future.