A computer glitch grounded all United Airlines flights in the US yesterday for the second time in six weeks – at the same time as another computer outage halted trading at the New York Stock Exchange.
United flights remained grounded for more than an hour because “an issue with a router degraded network connectivity for various applications”, the airline said.
Cascading delays take hours and sometimes days to work their way through the system.
United apologised to customers and offered to waive change fees for anyone wishing to reschedule their flight.
Meanwhile, a simultaneous technical glitch forced the New York Stock Exchange to suspend trading for more than three hours. Angry traders shouted that they would rather “go back to paper” – meaning ticker-tape – rather than use dodgy computers.
The US Department of Homeland Security said later there were no signs the stock exchange outage and the United Airlines glitch were linked.
Written by Peter Needham