FAA finds no foul play in US nationwide flight disruption

US Transportation Secretary Sean Duffy and Homeland Security Secretary Markwayne Mullin said there is no evidence of foul play, cyberattack, or AI involvement in Friday's FAA communications failure that grounded flights nationwide. Duffy blamed ageing routers overloaded with data. The ground stop, imposed at 3:54 pm ET, was lifted at 8:15 pm, though delays and cancellations continued.