Content Analysis: The issued lasted for about an hour. CNBC's Andrew Ross Sorkin reports on

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Ground stop issued for all United Airlines flights in Chicago, other airports
United Airlines issues nationwide ground stop
United Airlines ground stop causes residual impacts at SFO
United Airlines lifts ground stop after tech issues
United Airlines Ground Stop Explained: What Caused the Pause?
United Airlines pauses departures nationwide: FAA | NewsNation Now
United Airlines lifts nationwide ground stop
Ground stop issued for United Airlines mainline flights across US, FAA says
Equipment outages causes United Airlines ground stop
United flights currently subject to ground stop
United Airlines flights resume after brief nationwide ground stop
BREAKING: United Airlines Lifts Nationwide Ground Stop After Equipment Issue