The move is also likely to open talks about which remaining F-35 partner countries get Canada’s share of manufacturing parts for the plane, US Air Force Lieutenant General Christopher Bogdan told a subcommittee of the House Armed Services Committee.

Canadian Prime Minister designate Justin Trudeau, who was elected on Monday, said his government will pull Canada out of the US-led air operations over Syria and Iraq and will also drop out of the F-35 program.

Prior to Trudeau’s election, the Canadian government was set to purchase 65 of the Lockheed Martin Co warplanes to replace its aging CF-18s, which were built by Boeing Co.

Without Canada – one of the nine countries that helped fund the plane’s development – production of the F-35 would drop by about 61 planes, Bogdan said. He predicted that would mean increased unit production costs of anywhere from 0.7% to 1%, “or about $1 million per plane.”