American Airlines briefly grounded in U.S. by IT issue

American Airlines flights were briefly grounded on Thursday, with a nationwide ground stop preventing them from taking off. The company has now issued a statement attributing the disruption to an IT issue.

The ground stop was issued at approximately 6:30 p.m. ET / 3:30 p.m. PT, and appears to have impacted all American Airlines flights within the U.S. at the time. The company has over 1000 planes in its fleet, and is the biggest airline in the U.S. by capacity.

Fortunately, the issue was quickly resolved, with American Airlines stating that flights had resumed less than an hour after the ground stop began. According to the airline, an IT issue was to blame. 

"A technology issue briefly impacted connectivity for some of our systems on Tuesday evening," the official American Airlines X account posted at 7:21 p.m. ET / 4:21 p.m. PT on Tuesday evening. "Systems are coming back online now and flights are departing again. We put a temporary ground stop in place while our teams worked to resolve the issue. We apologize to our customers for the inconvenience."

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Exactly what said technology issue was has not been disclosed, however it does not appear to have posed a danger to ongoing flights. A ground stop is a standard measure used to manage aircraft traffic, and can be issued for incidents such as severe weather, significant equipment outages, or to prevent gridlock at an airport. As of writing, there are multiple ground stops at airports across the U.S. due to thunderstorms.

Even so, a nationwide ground stop is less common. The U.S. Federal Aviation Administration (FAA) states that ground stops are one of the most restrictive traffic management methods, and that alternatives must first be considered before one is issued.