The FAA lifted a nationwide ground stop on Friday evening after a telecommunications outage halted air travel for approximately four hours. The disruption resulted in nearly 5,000 cancellations and about 10,000 flight delays across the US.
Transportation Secretary Sean Duffy and Homeland Security Secretary Markwayne Mullin explained at a White House press conference that the failure was caused by overloaded 1980s-era analog switches and routers. In response, the Department of Transportation is requesting $50 billion for a complete system overhaul.