The U.S. Commerce Department said on Tuesday it slapped preliminary anti-subsidy duties on CSeries jets made by Bombardier Inc after rival Boeing Co claimed the aircraft were unfairly subsidized by Canada. The department imposed a 219.63 percent countervailing duty on Bombardier’s new commercial jets after it made a preliminary finding of subsidization. Boeing has complained the 110-to-130 seat aircraft, which have not yet been imported into the United States, were dumped below cost in the U.S. market last year while benefiting from unfair subsidies.