Trump's political threat to 'decertify' thousands of Canadian-made aircraft risks aviation safety, industry watchers say

Trump threatened to essentially ground thousands of Canadian-made planes operating in the US. It's likely not legal and is anti-safety rhetoric.

DANIEL SLIM/AFP via Getty Images

• President Donald Trump threatened to "decertify" Canadian-made aircraft and helicopters in the US.
• Aviation analysts warn that the rhetoric is anti-safety. They say certification shouldn't be political.
• A White House official said the move would apply only to new aircraft, not current ones.

President...