FAA Lifts Nationwide Ground Stop After US Flight Outage

The US Federal Aviation Administration has lifted a nationwide ground stop that paralyzed domestic air travel, although disruption at airports in the US and abroad has continued in its wake.

Sean Duffy, Trump's transportation secretary, acknowledged that a technical failure prompted federal aviation officials to shut down the system and ground flights nationwide, though he offered few specifics about the nature of the fault.

Ground stops are typically imposed when a serious problem threatens the safe operation of air traffic control, the infrastructure that coordinates aircraft movements across the national airspace. Such measures are intended to prevent accidents rather than cause them, but they inevitably trigger widespread delays and cancellations.

Despite the lifting of the order, airports have struggled to clear the backlog of grounded aircraft and rebooked passengers, with chaos persisting well beyond the initial shutdown.

The disruption has not been confined to US territory. Airports elsewhere in the world have also reported delays, reflecting how interconnected international flight networks are with the US aviation system.

Officials have yet to provide a full account of what caused the outage, and the lack of detail has fuelled uncertainty among travelers and airlines alike as they attempt to reroute flights and manage demand.

Airlines have been forced to adjust schedules on short notice, a process complicated by the scale of the shutdown and the knock-on effects it has had on connecting flights worldwide.

Authorities have indicated that further updates will follow as investigations into the root cause of the failure continue, though no timeline has been given for when normal operations will fully resume.

The episode has renewed scrutiny of the resilience of aviation technology systems, which underpin a vast network of daily flights and are increasingly seen as vulnerable to single points of failure.