UPDATE: American Airlines said at 7:21 p.m. We put a temporary ground stop in place while our teams worked to resolve the issue. American Airlines flights and regional carriers operating for the airline have been placed under a nationwide ground stop because of an IT outage, according to the Federal Aviation Administration (FAA). Article continues below the player“We’re currently experiencing a systemwide IT outage,” American Airlines said. The outage has already caused a noticeable reduction in the number of American Airlines flights in the air.