American Airlines The company briefly suspended its U.S. flights Tuesday morning due to a technical issue, disrupting travel at a time when airlines expect record demand for the holidays.

At 7:55 a.m. ET, the ground stop was lifted, an American Airlines spokeswoman told CNBC. The ground stop lasted less than an hour.

The problem was a network hardware issue on a platform that uses DXC technology, a provider that manages the flight operations system that allows flights to leave the gate, American said in a statement.

The system is tied to critical data such as an aircraft’s weight and balance, which is required before a flight can leave the gate.

“This issue has been resolved and flights have resumed,” the airline said in a statement. “We sincerely apologize to our customers for the inconvenience this morning.”

The Federal Aviation Administration said American had requested the grounding.

Airlines regularly request ground stops that hold flights at the point of departure so that during disruptions, destination airports are not overloaded with flights for which there is no parking space. In addition to technical problems, ground stops are put in place during thunderstorms and other severe weather events.

American had a smaller schedule on Christmas Eve than other days around the Christmas holiday. The airline has not announced any cancellations related to the issue, a spokeswoman said.

Airlines’ patchwork systems of critical technology platforms have recently taken off following periods of mass flight cancellations such as: B. gained more attention southwestThe collapse during the holiday season at the end of 2022 and deltaThe struggle to recover from it CrowdStrike Failure last summer.

Correction: The ground stop was issued on Tuesday. The timing was incorrect in an earlier version.