President Donald Trump on Thursday said he is decertifying all aircraft made in Canada as retaliation against the country for not certifying jets from Georgia-based Gulfstream Aerospace.

In an escalation of trade war with Canada, United States President Donald Trump said he will decertify all planes from the country and impose 50% tariffs on aircraft sold in the US until the neighbour...

Industry executives worry that linking safety certification — intended to be based on technical compliance — to economic or political disputes could erode confidence in the global aviation regulatory ...