Washington: US President Donald Trump has threatened to impose a sweeping 50 per cent tariff on all aircraft sold into the United States from Canada, sharply escalating a bilateral trade dispute centred on aircraft certification and directly targeting Canadian aerospace major Bombardier. The warning, issued through a post on Trump’s social media platform Truth Social, has raised concerns of renewed trade tensions between the two North American neighbours, particularly in the high-value aerospace sector.
According to Trump, the proposed tariff would come into effect unless Canada “immediately” certifies a series of business jets manufactured by Gulfstream Aerospace, a leading US-based aircraft maker. He accused Canadian authorities of deliberately and unlawfully refusing certification for several Gulfstream models, thereby harming American commercial interests.
Certification dispute at the centre
The immediate trigger for Trump’s remarks is Canada’s refusal to certify the Gulfstream G500, G600, G700 and G800 business jets. In his post, Trump alleged that the denial was “wrongful, illegal and steadfast,” arguing that it effectively blocks Gulfstream from accessing the Canadian market.
Calling Gulfstream jets among the most advanced aircraft ever produced, Trump said the certification should have been granted “many years ago”. He further alleged that Canada’s certification process was being used as a non-tariff barrier to protect its domestic aircraft manufacturer, Bombardier, from competition.
Aircraft certification is a complex technical and regulatory process overseen in Canada by Transport Canada, which evaluates safety, design and performance standards. Canadian authorities have not publicly detailed the specific technical reasons behind the delayed or denied certifications, but industry experts note that such processes can take years and are often influenced by evolving safety regulations.
Threat of decertifying Canadian aircraft
In a retaliatory move, Trump warned that the United States could decertify Canadian-made aircraft if Ottawa does not change its stance. He specifically named Bombardier’s Global Express jets, which are among the company’s flagship long-range business aircraft and are widely used by corporations and governments worldwide.
“We are hereby decertifying their Bombardier Global Expresses, and all aircraft made in Canada, until such time as Gulfstream, a great American company, is fully certified,” Trump wrote. Such a step, if implemented, would have far-reaching consequences, as US certification is crucial for aircraft sales, operations and maintenance in one of the world’s largest aviation markets.
Bombardier, headquartered in Montreal, is a major player in the global business jet segment and supports thousands of jobs across Canada. The aerospace sector is a strategic industry for the country, contributing several lakh jobs directly and indirectly and generating exports worth billions of dollars annually.
Tariff threat and trade implications
Trump’s most striking warning was his proposal to impose a 50 per cent tariff on all aircraft sold from Canada into the US if the certification issue is not “immediately corrected”. Such a tariff would dramatically raise costs for airlines, leasing companies and private buyers in the US, potentially disrupting supply chains and increasing prices across the aviation market.
Trade analysts say the move would also risk retaliation from Canada, which could target US aerospace components or other high-value exports. Canada and the US have a deeply integrated aerospace supply chain, with parts and components often crossing the border multiple times during manufacturing.
The dispute comes at a time when the global aviation industry is already grappling with supply shortages, delivery delays and rising costs. Any additional trade barriers could further strain manufacturers and customers alike.
Political undertones and broader tensions
The tariff threat also appears to be unfolding against a backdrop of broader political tensions. Reports have emerged that representatives of an Albertan separatist movement were recently hosted by individuals linked to the Trump administration. Alberta, Canada’s main energy-producing province, has periodically seen separatist rhetoric, though Ottawa has consistently rejected any suggestion of the country breaking apart.
Trump has previously made controversial remarks about Canada potentially becoming the 51st state of the US, comments that have been firmly dismissed by Canadian leaders. Prime Minister Mark Carney responded to the latest developments by reiterating Canada’s position on sovereignty.
“We expect the US administration to respect Canadian sovereignty. I’m always clear in my conversations with President Trump to that effect,” Carney said, signalling that Ottawa is unlikely to yield easily to public pressure.
Trump’s tariff-first strategy
The latest threat reinforces Trump’s long-standing approach of using tariffs as leverage in trade negotiations. During his presidency, he repeatedly imposed or threatened tariffs on allies and rivals alike to extract concessions, ranging from steel and aluminium duties to broader trade measures.
Just a day before the aircraft warning, Trump signed an executive order proposing tariffs on goods from countries that sell or supply oil to Cuba, underlining his continued reliance on punitive trade tools to advance foreign policy and economic goals.
Conclusion
Trump’s threat to impose a 50 per cent tariff on Canadian aircraft marks a significant escalation in a technical dispute over aircraft certification, transforming it into a high-stakes trade confrontation. With billions of dollars in aerospace trade at risk and deeply intertwined supply chains on both sides of the border, the coming weeks will be crucial in determining whether diplomacy prevails or the dispute spirals into a full-blown trade conflict between the US and Canada.