President Donald Trump threatened to "decertify" Canadian-made aircraft and helicopters in the US.

U.S. President Donald Trump’s threat to decertify Canadian-made aircraft in the United States could hamper the services of several U.S. airlines and aircraft operators, according to Cirium, an aviatio...

The president also said the U.S. is decertifying Bombardier Global Express jets "and all Aircraft made in Canada, until such time as Gulfstream, a Great American Company, is fully certified, as it sho...