Damaged communication lines at an FAA facility in Philadelphia disrupted flights across the US Northeast, with Newark hit hardest. The outage exposed continued fragility in the region's air traffic infrastructure even after repairs restored operations.

Technical failures at an FAA facility in Philadelphia disrupted flights across the New York region on Monday. The outage exposed fragile backup links as diplomats arrived for the UN General Assembly.

Technical failures at an FAA facility in Philadelphia disrupted flights across the New York region on Monday. The outage exposed fragile backup links as diplomats arrived for the UN General Assembly.