@ Willie:
Remember? The CRJ wasn't supposed to sell and many said it would kill this company. The day the CRJ was certified there were only 12 firm orders.
CRJ was a derivative of the Challenger though, much cheaper and less risky to develop. The C-Series is BBD's first clean-sheet design. The C has almost killed the company as the stock price shows, and the jury's still out on whether AC's order will prove palliative or curative.