DALLAS - A technical problem that caused flight delays across the country Monday morning has been resolved.
Southwest Airlines said it issued an internal ground stop that lasted about 40 minutes. The Federal Aviation Administration said the issues originated from a flight planning weight and balance program.
Southwest, United, Jet Blue, Delta and Alaska airlines all use the same vendor -- AeroData. American Airlines said some of its regional carries also use AeroData.
"We're working with Customers on any impacts to their travel plans and we appreciate their understanding as we place nothing higher than the safe operation of every flight," said Dan Landson, a spokesman for Southwest.
Many of the airlines received complaints on social media during the outage. They were quick to respond.
"It appears that we are experiencing an outage that is impacting our ability to create release paperwork, Katie. We know this is frustrating, and we will get you in the air as quickly as possible," United Airlines tweeted just after 6 a.m.
"I completely apologize, we are currently experiencing a System-Wide Outage we are working diligently to get it back up and running. We do not have a specific time as yet," Delta replied to another customer on Twitter.
Southwest said there may scattered delays for its passengers throughout the day as a result of the problem. Passengers are being urged, as always, to check the status of their flight before heading to the airport.