All flights halted across the United States due to a fault in air traffic control frequencies and radar systems

The US Federal Aviation Administration (FAA) announced the suspension of all flights across the United States, citing "exceptional circumstances and safety considerations," in an incident described as the second of its kind since the September 11, 2001 attacks.

Transportation Secretary Sean Duffy explained that the fault affected all air traffic control centers, and The Air Current reported that the direct cause is "multiple problems in air traffic control frequencies and/or radar systems." The FAA had suspended air traffic over Chicago shortly before issuing the nationwide order, instructing all aircraft scheduled to depart to remain on the ground "until further notice."

The agency indicated that international flights will be handled individually, each on its own. The last time all domestic flights were halted was in January 2023, when the FAA imposed a stop that lasted less than two hours.