Demands Canada Certify Gulfstream Aircraft, Threatens Tariffs President Donald Trump said on Thursday the U.S. was decertifying Bombardier Global Express business jets and threatened 50% import tariffs on other aircraft made in Canada until the country certified a number of planes produced by U.S. rival Gulfstream. It was unclear whether he has the legal authority to revoke certifications for planes for economic reasons. Under global aviation rules, the country where an aircraft is designed – the U.S. in Gulfstream’s case – is responsible for primary certification, known as a type certificate, vouching for the design’s safety. Trump specifically said he was decertifying the Global Express, a business jet from Quebec-based Bombardier, along with “all aircraft made in Canada.”

Demands Canada Certify Gulfstream Aircraft, Threatens Tariffs President Donald Trump said on Thursday the U.S. was decertifying Bombardier Global Express business jets and threatened 50% import tariffs on other aircraft made in Canada until the country certified a number of planes produced by U.S. rival Gulfstream. It was unclear whether he has the legal authority to revoke certifications for planes for economic reasons. Under global aviation rules, the country where an aircraft is designed – the U.S. in Gulfstream’s case – is responsible for primary certification, known as a type certificate, vouching for the design’s safety. Trump specifically said he was decertifying the Global Express, a business jet from Quebec-based Bombardier, along with “all aircraft made in Canada.”