CHICAGO - United Airlines on Friday briefly experienced a system outage that impacted operations at some airports, as well as its website and mobile app.In a statement to FOX Television Stations, the airline said it had experienced "technical system issues that impacted our operations and have since been resolved.""All systems are now working normally and we are working diligently to get customers to their destinations," the statement reads.The airline earlier posted a series of tweets in response to customers’ issues, stating it is aware of an issue impacting its website and mobile app and is "working to resolve it as quickly as possible." "Please try to log in again in an hour.