The grounding of United Airlines flights in the U.S. because of computer issues has been lifted.
The Federal Aviation Administration said the “automation issues” that had caused the ground stop have been resolved.
United tweeted a statement saying it is recovering from the network connectivity issues experienced earlier, and will give waivers to passengers who have to rebook their flights.
http://www.cbc.ca/news/world/united-airlines-ground-stop-lifted-after-computer-issues-1.3142729