Construction error severs backup cable, triggering major US East Coast flight delays
Hundreds of flights were delayed across New York, New Jersey, Pennsylvania, and Massachusetts on Monday after construction workers accidentally cut a telecommunications cable. The severed line, identified as a backup network, impacted the Terminal Radar Approach Control system used for guiding aircraft during takeoff and landing. US Transportation Secretary Sean Duffy confirmed the cable was repaired and operations resumed in the evening, though lingering delays were expected. The disruption occurred just before the UN General Assembly in New York City, where world leaders, including UK Prime Minister Andy Burnham, were scheduled to arrive. Newark Liberty International Airport was the most heavily affected hub, with 267 departing and 257 arriving flights delayed. While Duffy initially attributed the damage to Amtrak workers, NJ Transit later stated its own crews were responsible due to misplaced markers at the digging site. Verizon, the cable owner, stated it bore no responsibility for the incident.
Key points
- Construction workers accidentally severed a telecommunications cable, causing a telecom outage that forced the FAA to ground flights.
- The damaged cable was a backup network; the issue was only discovered after the primary circuit failed.
- Newark Liberty International Airport was the most impacted, with 267 departing and 257 arriving flights delayed.
- US Transportation Secretary Sean Duffy confirmed the cable was repaired and airports resumed normal operations in the evening.
- The disruption occurred ahead of the UN General Assembly in New York City, though UK Prime Minister Andy Burnham arrived on time.
- NJ Transit claimed its workers caused the cut due to misplaced markers, contradicting Duffy's initial attribution to Amtrak.
Background
This incident follows a similar disruption on September 21, 2026, when a Verizon fiber cable cut during construction in New Jersey grounded flights across Newark, Philadelphia, and NYC-area airports. That earlier event highlighted ongoing concerns regarding aging air-traffic-control technology and modernization efforts. Additionally, a UK air-traffic glitch in September 2026 caused widespread cancellations and delays, illustrating the vulnerability of global aviation infrastructure to technical failures.
Why it matters
The incident highlights the fragility of critical aviation infrastructure and the potential for construction errors to cause widespread disruptions. The timing, just before the UN General Assembly, underscores the risks to high-profile international travel. The conflicting accounts regarding responsibility between NJ Transit, Amtrak, and Verizon raise questions about accountability and safety protocols in infrastructure maintenance.
What to watch
Airports are expected to resume normal operations, though lingering delays may persist. Investigations into the cause of the cable cut and the misplaced markers at the construction site are likely to follow. The FAA may review the reliability of backup networks and construction safety protocols to prevent similar incidents in the future.
- Flights at major US airports delayed after cable cut by construction workers BBC
- Travel meltdown caused by aging circuit and backup system failure, transportation officials say cnn.com
- Northeast airport operations resume after telecom outage disrupts flights foxbusiness.com
- Ground stop lifted at PHL, but major delays expected to continue following equipment outage 6abc Philadelphia
- Technical Problems Ground Flights at Major East Coast Airports The New York Times
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