A Federal Aviation Administration technology failure disrupted flights at Newark Liberty, Philadelphia International and Teterboro on Monday, triggering ground stops and severe delays across the Northeast. The outage, tied to Philadelphia TRACON, forced airlines to hold departures, divert some flights and cancel others, with United Airlines among the hardest hit at Newark.
The disruption widened beyond the first three airports to include John F. Kennedy, LaGuardia and Westchester, deepening operational strain across one of the United States’ busiest air corridors. Philadelphia TRACON, which manages arrivals and departures in the region, was affected by problems on some frequencies, prompting the FAA to pause traffic while controllers worked through the failure.
Later reporting identified a damaged backup fibre line in New Jersey as the likely cause, after FAA Administrator Bryan Bedford said it had been accidentally cut by a construction crew. A replacement circuit was expected to come online soon, but the incident still left Newark and Philadelphia facing the heaviest delays, with cascading knock-on effects for domestic and international schedules.