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US Transportation Secretary Sean Duffy announced Friday night that national airspace had reopened at 8:15 PM Eastern Time following a system-wide shutdown caused by failing legacy telecommunications hardware.

Speaking from the White House briefing room on November 13, Duffy explained that older analog Time-Division Multiplexing (TDM) switches and routers became overloaded with data and began producing inconsistent information, prompting officials to shut down the air traffic control network as a safety precaution.

He claimed that newer Internet Protocol (IP) switches installed under the Trump administration remained operational during the outage.

Duffy used the incident to urge congressional funding for further infrastructure modernization, asking whether the American public wants Congress to finance the replacement of the remaining aging hardware.

Federal officials and aviation safety watchdogs have repeatedly warned that reliance on outdated copper-wire networks and legacy telecommunications equipment poses operational risks, echoing previous system failures such as the January 2023 Notice to Air Missions (NOTAM) outage that temporarily halted domestic departures nationwide.

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