An unexpected telecommunications disruption in air traffic control systems prompted the Federal Aviation Administration (FAA) on Friday to command a complete halt of all departing flights across the United States. This unprecedented move left thousands of aircraft grounded and impacted over 7,000 flights through delays and cancellations.
The FAA declared a national air emergency, citing "extraordinary circumstances and safety concerns." This marks only the third instance of such an event in U.S. aviation history, following the September 11, 2001 attacks and a technical glitch in January 2023.
"There has been a temporary telecommunication interruption. As a precaution, all flights have been stopped. Each flight has been accounted for, and international flights will be managed on a case-by-case basis," the FAA announced via its official channel.
The agency clarified that the disruption affected route control centers managing air traffic between airports nationwide. The action was taken with "the utmost caution."
According to a CNN report, the outage impacted both air traffic control radars and radio frequencies, causing simultaneous failures.
Insiders revealed that air traffic controllers are uncertain about the root cause of the issue or the exact details of the situation.
The directive allowed planes already airborne to proceed to their destinations and land as usual, but no grounded aircraft could take off until further notice.
Homeland Security Secretary Markwayne Mullin assured that the incident did not pose a security threat to the nation.
"There's no indication or reason to believe this was a threat to the United States. It was a telecommunication interruption within the FAA," he assured reporters at the White House.
Mullin also dismissed any connection to the massive Microsoft outage the previous day, which disrupted email, video conferences, banking, hospitals, and railways worldwide. "There's no reason to link the two events. They are separate incidents," he stated.
The official cautioned that resolving the issue wouldn't be swift: "This won't be fixed and turned around in an hour."
President Donald Trump was briefed on the situation and had a phone conversation with Transportation Secretary Sean Duffy, who first publicly announced the halt.
The decision caused chaos in major airports nationwide. At Newark Liberty International Airport, hundreds of passengers waited in Terminal A without specific information on when flights would resume. Some travelers from Toronto chose to seek accommodation in New York for the night.
At Chicago O'Hare, where restrictions had initiated before the national order due to "equipment interruption," the atmosphere was calmer, though airline ANA provided meal vouchers to passengers facing two-hour delays on flights to Tokyo.
American Airlines warned that its operations would experience disruptions for the remainder of the day. "This will be a collective effort to get customers on their way as soon as possible once the FAA lifts this halt," the company stated in a release.
The last precedent for a similar measure occurred in January 2023, when a failure in the FAA's pilot notification system (NOTAM) —caused by the accidental deletion of files during maintenance— halted departures for less than two hours, leading to over 10,000 delays nationwide.
As of the latest information available, the FAA had not officially confirmed the lifting of the national halt order.
Understanding the FAA Flight Suspension Impact
What caused the FAA to halt all flights?
A telecommunications disruption in air traffic control systems led the FAA to suspend all departing flights as a safety precaution.
Is there a security threat associated with the flight suspension?
According to Homeland Security Secretary Markwayne Mullin, there is no indication of a security threat to the United States related to the incident.
How did this incident compare to past aviation disruptions?
This event marks only the third time in history that a national air emergency was declared in the U.S., following the 9/11 attacks and a technical glitch in January 2023.
Were international flights affected by the FAA's order?
International flights were managed on a case-by-case basis during the suspension period.