"United midday on Wednesday said that the grounding had been caused by a computer-network router that malfunctioned, which disrupted its passenger reservations system. That meant that many passengers couldn’t check in for their flights. The disruption affected some places more than others, but it covered the entire network, which was why United decided to ground its entire mainline and United Express fleet worldwide."
http://www.wsj.com/articles/united-f...sue-1436361911
Originally Posted by
LEONIDES
Smells fishy. I really doubt that a single router caused this mess.
Another question: If this was just a problem with the "passenger reservations system" such that "many passengers couldn't check in for their flights" why did UA need a full ground stop? The reports this morning suggested that one or more systems necessary for flight ops were down.