President Trump announced Thursday on Truth Social that he's revoking certification for all aircraft manufactured in Canada, including the Global Express business jet produced by Quebec-based Bombardier (BDRBF). And he's not stopping there—he's threatening to slap a 50% tariff on Canadian aircraft until Canada certifies U.S.-made Gulfstream jets.

The president's post was characteristically direct: "Canada has wrongfully, illegally, and steadfastly refused to certify the Gulfstream 500, 600, 700, and 800 Jets, one of the greatest, most technologically advanced airplanes ever made."

So what does this mean? Essentially, if Canadian aircraft can't fly in the U.S. and face hefty tariffs, that's a pretty serious disruption for both the aviation industry and anyone who needs to fly between the two countries.

Bombardier responded by saying it's "in contact" with the Canadian government and hopes for a swift resolution to avoid significant disruptions to air traffic and the flying public. The company also pointed out that it's "actively investing" in expanding its U.S. operations, including a new service center in Fort Wayne, Indiana. It's a subtle reminder that Bombardier employs Americans and contributes to the U.S. economy, even if its jets are technically Canadian.

Another Chapter in Canada Trade Tensions

This aircraft fight is just the latest salvo in Trump's escalating criticism of Canada and its trade relationships. Earlier this week, Trump slammed Canada's trade agreement with China, calling it "one of the worst deals of all time." He's also threatened a 100% tariff on Canadian imports if the country moves forward with a free-trade deal with China, accusing Canada of being a "Drop Off Port" for Chinese goods entering the U.S.

Canadian Prime Minister Mark Carney has been pushing back. He denied reports that he retracted remarks from his Davos speech during a recent phone call with Trump, saying he told Trump he "meant" what he said in Davos. On Thursday, Carney stated that he expects Trump to respect Canada's sovereignty amid reports that separatists from Alberta, an oil-rich Canadian province, met with the Trump administration.

The whole situation is a reminder that trade disputes can get messy quickly, especially when they involve critical industries like aviation and get tangled up with broader geopolitical tensions.