The vulnerability of the United States’ air traffic control system has come under renewed scrutiny after an equipment failure and a severed fibre-optic cable disrupted thousands of flights across the northeastern US.
The incident exposed the risks created by decades-old technology, with the Federal Aviation Administration still relying on ageing computers, analogue systems and replacement parts that can be difficult to obtain. More than 300 FAA air traffic facilities operate largely as separate systems, limiting their ability to communicate seamlessly with one another.
The latest disruption occurred when a communications circuit at a Philadelphia air traffic facility failed while a backup fibre-optic cable in New Jersey had been accidentally cut by a construction crew. The combination disrupted radar and communications serving major airports, including Newark, Philadelphia and the New York area.
The FAA received $12.5 billion from Congress last year for modernisation, but Transportation Secretary Sean Duffy has called for another $30 billion to complete the overhaul. Officials say the transition to digital communications is expected to begin in late 2027, followed by further migration of facilities to cloud-based systems.
The episode has intensified pressure for faster investment in aviation infrastructure as the US seeks to reduce the risk of future outages.
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