April 25 (Reuters) - Canada's main stock index fell at open on Thursday, as shares of plane-and-train maker Bombardier Inc BBDb.TO tumbled after the company cut its full-year profit forecast.
* At 9:31 a.m. ET (1331 GMT), the Toronto Stock Exchange's S&P/TSX Composite index .GSPTSE was down 48.2 points, or 0.29 percent, at 16,538.32.