We've seen all this before.... Whether it's the big Mexican contract or the overall market drop itself, it's an old story.
Years ago (can't remember how many) Mexico granted a large contract to an outside competitor. Then subsequently cancelled it and in the end Bombardier got the work. Ya gotta wonder what goes on behind the scenes in such situations, but it's easy to imagine a little arm twisting going on. Inexperienced politicians sometimes think they're free to give the work to the cheapest bidder.
Only later the reality of it hits them when they realize that if the companies with manufacturing plants in their country don't get the work, they will lose jobs on a massive scale.
As for markets in general, Bombardier seems to be holding up reasonably well. Whoever is writing stuff suggesting the share price is down significantly must have his eyes closed to what's going on in the overall markets. Anyone who thinks 2% is big simply hasn't been around long enough to be telling anhyone his feelings.
What's going on is a positive in the long run. Oil's getting cheaper. Big oil stocks are falling, and since they make up a big part of indexes their fall is pulling down markets. Although Bombardier benefits from selling more fuel efficient aircraft, the drop in oil prices also means airlines have more money to spend on aircraft ant more aircraft orders means more profits for Bombardier in the years ahead.
Of course, in any market rout you're going to get some investprs who need to sell other stocks because their positions in oil-related companies are taking a big hit. So, you're going to get some selling simply because people tend to panic when markets tumble.
Then again, as Peter Lynch reminds us, if you aren't prepared for regular pull-backs you shouldn't be investing in the stock market. Lynch suggests investors should be prepared for pull-backs of 10% or more every two years on average, and we should be prepared for a pull-back of 25% or more about every six years on average.