Aged Equipment at Remote Site Caused Historic US Air Ground Stop

WASHINGTON, Nov 14 (OPA) — Transportation Secretary Sean Duffy told reporters at agency headquarters on Saturday that contractor L3 Harris was replacing outdated technology at a remote facility when the communications failure occurred. Duffy stated that the contractor was switching communication lines from legacy copper wire to fiber optics when the system stalled, halting air travel across the nation for hours. Officials are currently investigating whether the incident stemmed from user installation error or a faulty router.

Duffy criticized L3 Harris as the department's legacy provider, accusing the firm of failing to meet operational standards during the critical maintenance. The wire being replaced was so old that it was being discontinued, prompting the routine upgrade. As technicians swapped the copper lines for fiber, the transition flooded secondary routers and disrupted radar feeds, leaving air traffic controllers unable to communicate effectively with aircraft.

FAA Chief Bryan Bedford noted that the ground stop was ordered because officials could not locate the source of the communication failure for approximately 45 minutes. More than 3,500 airplanes were airborne when the emergency order was issued on Friday afternoon, disrupting travel for tens of thousands of passengers. Officials reiterated that investigators have found no evidence indicating the outage resulted from a cyberattack.

Following the incident, Duffy renewed demands for increased congressional funding to modernize the agency's infrastructure, pointing out that air traffic control systems still rely on equipment dating back to the 1970s and 1980s. Bedford confirmed that while residual cancellations and delays will persist throughout the weekend, normal flight operations are expected to resume by Sunday night.