Although there are a number of matters of interest to both countries, the dispute between Boeing and Bombardier is certain to be a priority item on the agenda when the two Prime Ministers meet face-to-face, the source said.
The company's C Series jets have been at the centre of an ongoing trade battle with United States-based Boeing, which has accused Bombardier of selling the jets to USA -based Delta Airlines at an unfairly low price with help from government subsidies in Canada. "For whatever reason, they decided they weren't going to continue to have discussions with us".
The firm won an order to supply 125 C-Series passenger jets to United States airline Delta previous year.
Ambassador David MacNaughton's comments are the first revelation that the Trudeau government spoke directly with Boeing about the dispute, which has become a flashpoint for the Liberals.
The political rivals, who have been unable to reach agreement to restore Northern Ireland's failed government, issued a joint letter to US Vice President Mike Pence raising their concerns about the fallout which could financially devastate one of the region's biggest employers.
Its rival, U.S. company Boeing, has claimed that the move was unfairly subsidised by the Canadian state.
American aircraft manufacturer Boeing has accused rival Bombardier of receiving unfair state support and a ruling in the USA this month could doom its Belfast factory.
The price tag includes weapons, spare parts, training, software and other costs associated with putting the jets into service, but not upgrades to hangars or long-term support and maintenance.
Nintendo Is Releasing Way More Super NES Classic Editions Than Originally Planned
According to Business Wire, sales of the NES mini will also resume in North America, where it will return to sale next summer. Nintendo UK has confirmed that the NES mini is back in production and will return to shops in the UK next summer.
"We believe that global trade only works if everyone plays by the same rules of the road, and that's a principle that ultimately creates the greatest value for Canada, the United Kingdom, the United States and our aerospace industry", Boeing said in a statement obtained by Bloomberg.
The dispute between Boeing and Bombardier has quickly escalated into a feud of epic proportions.
The US Department of Commerce is expected to announce a decision on whether to impose duties against Bombardier on September 25.
It could hit Bombardier with punitive tariffs.
While Canada is considering purchasing Australia's F/A-18 classic Hornets, the US State Department has approved a potential sale of Boeing F/A-18E/F Super Hornets to their northern neighbours.
Prime Minister Justin Trudeau also complained about subsidies to Boeing in a call with the governor of Missouri, where the Super Hornets are built.
President Donald Trump could find himself in an awkward position amid a trade dispute between rival plane makers.
"The engagement at governmental level with Boeing and with the USA has been significant over the course of the summer because this is pivotal to the Northern Ireland economy", DUP lawmaker Gavin Robinson told the Irish national broadcaster RTE.