A construction crew doing railroad work severed a Verizon fiber-optic line on September 21, and within hours the FAA had ground-stopped flights at Newark, JFK, LaGuardia, and Philadelphia International.

The outage knocked out a data connection the FAA uses to relay flight-plan and equipment data between air traffic facilities, according to the FAA's own statement cited by multiple outlets, and it took most of the day to restore full service. NBC News and the New York Daily News, both citing FAA and Verizon accounts, reported the cause as a fiber line cut during railroad construction work — not a hack, not weather, a shovel or a boring rig hitting a line.

This is the story every excavating contractor in the region already knows in their bones: buried fiber doesn't announce itself, and a call-before-you-dig ticket doesn't always catch every carrier's plant, especially on railroad and utility rights-of-way that sit outside the standard 811 process. When a hit like this takes down FAA data circuits serving three of the busiest airports in the country, it stops being a one-line-item change order and becomes a federal incident with a paper trail.

Railroad ROW work carries its own utility-locate rules, often coordinated through the railroad's own force account or flagging protocol rather than a standard municipal one-call — and fiber routes along active rail corridors are exactly the kind of plant that's easy to miss on older locate tickets. Contractors working near any active or former rail line, PANYNJ property, or FAA-adjacent infrastructure should treat that locate step as non-negotiable, and document it, because when a hit closes three airports, someone is going to ask who signed off on the dig.

No contractor or firm has been named publicly in connection with the cut as of this writing, and neither the FAA nor Verizon identified the responsible party in their statements. The FAA said normal operations had resumed by Monday evening after backup circuits were brought online.

First reported by NBC News and the New York Daily News.