• Trump threatens a 50% tariff on all Canadian aircraft unless Gulfstream jets are certified.
• The U.S. plans to decertify Bombardier's planes amid rising trade tensions.
• Over 5,000 Canadian-made planes are operating in the U.S., raising concerns about economic impact.
• Bombardier's stock has fallen sharply in response to Trump's threats.
• U.S. carriers, including American Airlines and Delta, rely heavily on Canadian planes for operations.

U.S. President Donald Trump has threatened Canada with a 50% tariff on all aircraft sold into the United States unless Canada certifies jets produced by Gulfstream Airways. The announcement follows Canada's refusal to certify Gulfstream's new models, escalating tensions between the two countries. "If, for any reason, this situation is not immediately corrected, I am going to charge Canada a 50% Tariff on any and all Aircraft sold into the United States of America," Trump stated in a social media post on Truth Social, highlighting the stakes involved in this certification issue, particularly focusing on Bombardier's aircraft, according to India Times and Channel News Asia.

As part of his announcement, Trump indicated that the U.S. would begin decertifying Bombardier's Global Express jets and potentially all aircraft manufactured in Canada. This decision could have severe repercussions for U.S. airlines, such as American Airlines and Delta Air Lines, which depend on these Canadian aircraft for regional services. The Canadian aerospace company has about 3,000 employees operating in the U.S. and has multiple service centers there, emphasizing its critical role in the aviation sector, according to Reuters and Al Jazeera.

Data from aviation services indicate that there are over 5,000 Canadian-made aircraft in operation in the U.S., which raises questions about the impact on air travel if those aircraft were decertified. Currently, Bombardier has 150 Global Express jets registered in the U.S., amidst similar operations concerning other Canadian-made aircraft such as the Airbus A220, indicating a significant interdependency between the U.S. and Canadian aviation industries. These complexities were detailed by Channel News Asia and Reuters.

The immediate impact of Trump's threats has been severe, causing Bombardier's stock to drop by approximately 9% after his announcement. The situation has prompted concerns from industry analysts and airline operators about the potential grounding of aircraft and the implications for air traffic safety. Bombardier is in contact with the Canadian government in hopes of a rapid resolution to these issues to mitigate adverse impacts, a sentiment echoed in statements from Al Jazeera and Reuters.