Transportation Secretary Sean Duffy blamed a routine equipment upgrade by L3Harris for the nationwide ground stop that cancelled more than 8,200 flights on Friday and about 3,000 additional flights on Saturday.
At a Saturday press conference, Transportation Secretary Sean Duffy said the nationwide ground stop that halted flights across the United States stemmed from a routine maintenance operation. L3Harris, a longtime contractor for the Federal Aviation Administration (FAA), replaced copper wiring with fiber‑optic cable at a remote site, but a newly installed router overloaded a critical communication system, prompting the shutdown.
Acting FAA chief technology officer Rebecca Guy explained that the network began showing instability, with two points pinging the FAA’s network at a rate of roughly a thousand connections every four to five seconds. The FAA disabled both sources immediately, restored network stability, and launched a root‑cause analysis to determine the exact failure point.
Duffy noted that the upgrade occurred at 3 p.m. on a Friday rather than the usual overnight window used at larger airports, arguing that remote switchovers often happen during daylight hours. He reiterated his demand for additional congressional funding to modernize aviation equipment and said the timing of such work will be reassessed to avoid future disruptions.
The incident marks the third nationwide ground stop of the 21st century. Aviation data firm Cirium reported more than 8,200 flight cancellations on Friday evening, with an additional roughly 3,000 flights canceled on Saturday after the stop was lifted. The prolonged interruption affected passengers, airlines, and the broader travel ecosystem.
The ground stop came a day after the FAA announced the rollout of an AI tool for air‑traffic controllers, a move the controllers’ union said it was not consulted on. FAA Administrator Bryan Bedford said there is "zero evidence" of any AI‑related issue, while Homeland Security Secretary Markwayne Mullin jokingly referred to the situation as "SI" (super intelligence).
TechTimes Perspective
TechTimes believes the nationwide ground stop underscores the FAA’s urgent need to modernize its communications infrastructure, especially as AI tools are being introduced into air‑traffic management. Without sufficient funding, similar incidents could recur, disrupting millions of travelers, including Vietnamese passengers who increasingly rely on U.S. airlines for international trips. Revisiting the scheduling and oversight of equipment upgrades, together with stricter quality checks, will be essential to prevent future outages and maintain confidence in the U.S. aviation system.