A construction crew accidentally severed a fibre-optic backup line in New Jersey on Monday, compounding an earlier communications failure at the FAA’s Philadelphia TRACON and triggering major delays and ground stops across the Northeast. The outage disrupted operations at Newark, Philadelphia, Teterboro, JFK and LaGuardia, with spillover delays reaching Boston as air traffic across one of the country’s busiest corridors was slowed or halted.
The disruption began when a primary circuit failed at the Philadelphia-area approach-control facility, forcing controllers onto redundancy systems that were then found to be compromised. The telecom damage, later repaired, left airlines dealing with cancellations and long backlogs well into the evening. Transportation Secretary Sean Duffy later said airport operations were resuming, while FAA Administrator Bryan Bedford identified the backup line failure as a key factor in the outage.
Early reports differed on which contractor was responsible for the cut, but the broader account was consistent: construction work near a rail corridor between New Brunswick and Newark damaged the fibre line serving FAA communications. The episode exposed how quickly a ground-side infrastructure failure can ripple through the Northeast air-traffic network and unsettle schedules at multiple hub airports at once.