March 30 (UPI) -- Air Canada announced Monday that its CEO Michael Rousseau would retire by the end of the third quarter after a recent condolences statement given mostly in English. "The board will consider a number of performance criteria in assessing candidates, including the ability to communicate in French," the airline said in a statement . On March 22, an Air Canada Express flight from Montreal crashed into an airport fire truck after landing at LaGuardia, killing both pilots and