Getting it ceritified is only the first, and perhaps financially easier, problem facing Bombardier.

The killer issue is the necessary funds to get the program moving as they will lose money on the production aircraft until it is fully ramped up and efficiencies achieved. As an example, Boeing is still losing millions on every single 787 they assemble (~300 and counting) and that's not even factoring the insane development costs that Boeing will never recover.

So far the C-Series is $2B and years over budget and that has sucked all the life out of Bombardier including the reserves they would have used to support production.

It would not surprise me at all if Bombardier has already informally asked for Canandian government support as the entire company is in jeopardy. And I would suspect the informal response was: you need to sell some airplanes so we know what we are talking about.