FAA ground stop halts takeoffs at US airports nationwide

What happened

The Federal Aviation Administration issued a nationwide ground stop on Friday, pausing takeoffs at airports across the United States. According to The Verge, the order was issued due to extraordinary circumstances and for reasons of safety. Aircraft that were already in the air are being allowed to land.

US Transportation Secretary Sean Duffy said in a social media post that the FAA had ordered the stop for all US airports after a communication issue affecting all Air Route Traffic Control Centers. He said FAA technicians were investigating and that updates would follow.

The technical problem

The Verge reports that a communications problem is affecting the Air Route Traffic Control Centers, the facilities that manage aircraft between airports. Jon Ostrower of The Air Current reported that the FAA told airlines the stop was due to several impacts to air traffic control frequencies and radar capabilities.

The scale of the disruption was quickly visible on flight tracking services. FlightAware listed 7,884 US flights as delayed as of 4:56PM ET on Friday.

How rare a nationwide stop is

A ground stop covering the entire country is unusual. According to CNN, the last nationwide ground stop came in 2024, when a system used to send notifications to pilots went down. Before that, the previous instance followed the attacks of 11 September 2001.

On the cause, CNN reports that unnamed law enforcement sources said preliminary findings suggest no cyberattack was responsible. That remains an early assessment, and no official explanation has been confirmed.

What it means for travellers

With departures paused nationwide, delays were already running into the thousands within hours. Passengers due to fly on Friday should expect disruption and check with their airline for the latest status.

The FAA has said it will provide updates as its investigation continues. Until the communication problem is resolved, further delays are likely even once flights resume, as airlines work through backed-up schedules.