Bombardier Falls After Ebersol Jet Crash  MONTREAL (Reuters) - Shares of Bombardier Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=BBDb.TO target=/stocks/quickinfo/fullquote"&gt;BBDb.TO&lt;/A&gt;  fell 4 percent to a year low on Monday, one day after a fatal  crash involving one of its business jets.