The Edmonton International Airport (YEG) says some flights may be impacted as a result of a ground stop issued in the United States by the Federal Aviation Administration (FAA). U.S. Transport Secretary Sean Duffy said in a social media post that planes have been grounded due to a “communication issue” impacting all U.S. Air Route Traffic Control Centers. There are several flights scheduled to depart to the U.S. from Edmonton on Friday, according to an airport spokesperson. “Seven flights currently scheduled to depart Edmonton International Airport (YEG) for U.S. destinations between now and the end of the day may be impacted by the FAA nationwide ground stop,” Erin Isfeld wrote in an email to CTV News Edmonton. “As this is an evolving situation, passengers travelling to the United States today should check directly with their airline for the latest information on their flight before coming to the airport.” It’s unclear how long the ground stop will last.