The US Federal Aviation Administration (FAA) issued a rare nationwide ground stop on Friday, halting all departures and landings across US airports for just over four hours. The stop marked the longest nationwide shutdown, and only the second nationwide ground stop of all departures, since the 9/11 terrorist attacks. The US homeland security secretary, Markwayne Mullin, and the US transportation secretary, Sean Duffy, appeared to suggest that the cause of the outage was older technology becoming overwhelmed with data after new technology was introduced.
What to know about the rare nationwide ground stop issued by the FAA
