Here’s the latest.

LatestHere’s the latest.The Federal Aviation Administration announced a rare nationwide ground stop on Friday afternoon, in what appeared to be a major outage affecting its air traffic control system.Sean Duffy, the secretary of transportation, confirmed the outage in a social media post, citing “a communication issue impacting all Air Route Traffic Control Centers.”“FAA technicians are investigating the issue,” he added. “We will provide immediate updates as we have them."The agency posted an advisory stating that “all airports are ground stopped,” citing “extraordinary circumstances and for reasons of safety” as the reasons.“All departing traffic should remain ground stopped until further notice,” the official advisory read, adding that the landings of inbound international flights would be managed on a case-by-case basis.Shortly after the advisory was posted, an F.A.A. website that lists air traffic control system notices appeared to have gone down, erasing dozens of notices that previously had been listed.This is a developing story. Check back for updates.The nationwide pause in departures could have widespread effects. Even if short-lived, the disruption will delay thousands of flights. If it lasts long, those delays could turn into cancellations as flight crews reach legal working limits. That would have cascading effects throughout the weekend.In the Denver airport, passengers were taken off their flights with their suitcases. A handful began rebooking travel for the next day. But most waited patiently for any kind of update. A Southwest flight attendant announced that the airline expected an update in 30 minutes.AdvertisementSKIP ADVERTISEMENTThere were more than 30,000 flights scheduled for the remainder of the day after the nationwide ground stop began shortly before 4 p.m. Eastern Time, according to the flight tracking app Flighty.The F.A.A. last stopped flights nationwide in 2023, when contractors unintentionally deleted files related to an alert system used to communicate with pilots, delaying thousands of flights.There are more than 1,000 airborne aircraft headed to U.S. airports amid the nationwide ground stop, according to Flightradar24, a flight tracking website.