A ground stop on all Air Canada and Rouge flights worldwide has been lifted about an hour after that was first issued by Federal Aviation Administration.

According to a statement from Air Canada, the airline experienced a temporary “technical issue” with its communicator system, which it says is used to communicate with aircraft and monitor operational performance.

The Stop was issued at approximately 11:20 a.m. eastern time, with FAA citing a request from the airline. It was suspended at 12:15 p.m. ET.

The airline said it had been “limited delays” as a result of the problem but the system is now “returning to normal” with the “preventive” ground stop lifted.

At present, the extent of these delays is not yet clear.

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According to data from Cirium, an airline analytics firm, there were a total of 1,047 Air Canada flights booked for Thursday. About 15 Air Canada flights were canceled as of 1 p.m. ET Thursday, according to Cirium, but it’s unclear if any of those canceled flights were directly linked to the ground stop.

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