Aircraft maker Bombardier Inc. (BBD_B.TO, BBD_A.TO) Tuesday revealed an agreement with Air Canada for purchase of Landmark C series for up to 75 aircraft. Air Canada has signed a Letter of Intent in February and placed purchase agreement for 45 CS300 aircraft valued at $3.5 billion, with an option for an additional 30 CS300. The total order value, including option is $6.3 billion at list price.