OTTAWA (Reuters) – Canada is scrapping a plan to buy 18 Boeing Co (BA.N) Super Hornet fighter jets amid a deepening dispute with the U.S. aerospace company, three sources familiar with the matter said on Tuesday.

Instead, the Liberal government will announce next week it intends to acquire a used fleet of older Australia F-18 jets, the same kind of plane Canada currently operates, said the sources, who asked not to be identified because of the sensitivity of the situation.

The move underlines Ottawa’s anger at a decision by Boeing to launch a trade challenge against Canadian planemaker Bombardier Inc (BBDb.TO), which the U.S. giant accuses of dumping airliners on the American market.

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