The US Federal Aviation Administration (FAA) issued a rare nationwide ground stop on Friday, November 13, 2026. This action halted all departures and landings across US airports for a duration of just over four hours.
The incident marks the longest nationwide shutdown of its kind, and only the second nationwide ground stop of all departures, since the 9/11 terrorist attacks. US homeland security secretary, Markwayne Mullin, and US transportation secretary, Sean Duffy, appeared to suggest that the outage was caused by older technology becoming overwhelmed with data after new technology was introduced.