United Flights Resume as Grounding Slows Thousands of Fliers

Why Is United So Vulnerable to Computer Glitches?

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United Airlines is resuming flights after a computer fault halted all U.S. departures for about two hours, disrupting travel for thousands of passengers in the second such setback since early June.

“An issue with a router” caused the failure, United said Wednesday in a statement without giving details. The shutdown affected only mainline jets that were still on the ground, according to the U.S. Federal Aviation Administration.