The US International Trade Commission (USITC) has voted in favour of Bombardier in a case filed by Boeing, alleging the Canadian aircraft manufacturer of pursuing wrongful practice to sell its 100 to 150-seat large civil aircraft in the US.

According to Boeing, the practice followed by Bombardier will hurt the US aerospace industry.

In the latest ruling, USITC chairman Rhonda Schmidtlein, vice-chairman David Johanson, and commissioners Irving Williamson and Meredith Broadbent voted in the negative to Boeing’s petition.

“The negative determinations have clarified that no antidumping or countervailing duty orders will be issued against Bombardier.”

The negative determinations have clarified that no antidumping or countervailing duty orders will be issued against Bombardier.

USITC said in a statement: “The USITC today determined that a US industry is not materially injured or threatened with material injury by reason of imports of 100 to 150-seat large civil aircraft from Canada that the US Department of Commerce has determined are subsidised and sold at less than fair value.”

Last month, the US Department of Commerce had upheld its previous finding that seeks to impose a nearly 300% duty on the import of Bombardier’s C-Series aircraft configured with 100-150 seats from Canada.

After the latest USITC decision, Boeing expressed its disappointment saying that USITC did not recognise the harm that Boeing suffered from significant illegal government subsidies, which the US Department of Commerce found Bombardier received and used to dump small single-aisle aircraft in the US.

However, Bombardier has welcomed the USITC vote and said that the commission ruling represents a victory for US airlines and passengers.