RE:Safran Mirabel & Bombardier, as per "La Presse".Yes, that article is speculating that that somehow the strike at the plant which does not produce the Bombarier parts could spread to other plants. This is very speculative becuase it is like saying that a strike at ford is a risk for GM because if ford employees get a raise, then GM will want one too. It curtainly isn't something that would warrant a commenter suggesting that Bombardier should be considering using skis for its planes.
Basically, it is business as usual for Bombardier until some hypothetical day when employees at other plants may negotiate with management on their own contracts. Which is the same for every company in every plant for every part.