Transportation Secretary Sean Duffy blames aging copper wire for nationwide FAA ground stop
Transportation Secretary Sean Duffy blames aging copper wire for nationwide FAA ground stop

Transportation Secretary Sean Duffy blames aging copper wire for nationwide FAA ground stop

Transportation Secretary Sean Duffy says a routine upgrade from old copper wire to fiber caused a router to flood air traffic control systems, leading to a nationwide ground stop.  FOX 10's Danielle Miller was at Phoenix Sky Harbor International Airport, where travelers experienced calm conditions and minimal delays, despite Friday's ground stop. 

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