American Airlines resumes flights after technical issue causes nationwide grounding

American Airlines flights in the U.S. were grounded early Tuesday due to a systemwide technical issue. The Federal Aviation Administration ordered the halt at the airline's request, affecting many travelers during the busy holiday season. By early Tuesday morning, regulators cleared American Airlines to resume flights. The airline acknowledged the problem on social media and thanked passengers for their patience, but did not provide further details. The grounding coincided with a peak travel period, as the Transportation Security Administration anticipates screening 40 million passengers through January 2.