text: As always, the devil is the details and we don't know how those will shake out.  If  the Airbus hook-up stimulates sales in the United States with substantial Canadian input, and if the momentum of U.S. sales carries the plane to solid world-wide sales in the next decade or so, and if a substantial number of those non-U.S. sales are sourced from plants in Canada, that could be a huge contribution of non-resource exports to Canada's trade balance.  That is three "ifs", none of them outlandish to contemplate.  So let's not write it off yet.
  
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