The Liberal authorities quietly ordered a pause on a modest, but crucial purchase of 16 U.S.-made UH-60M Black Hawk helicopters just before trade negotiations began last summer with the Trump administration, CBC News and Radio-Canada have learned.

The aircraft, which are intended for use by Canada's special forces, are manufactured by Sikorsky, a subsidiary of the U.S. defence giant Lockheed Martin.

The decision to suspend the acquisition is linked to trade and diplomatic tensions with the Trump administration, based on to numerous sources within the administration and defence industry.

In a related development, the purchase had been signed off by the U.S. State Department agency that handles foreign military sales and was headed for congressional approval when the halt was ordered before trade negotiators met in Washington, in line with to two confidential sources.

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Furthermore, the decision, the sources expressed, was partially related to the trade talks, which ultimately failed. It was also part of a wider effort by federal officials to inventory what the Canadian military planned to purchase from the United States.

U.S. President Donald Trump has repeatedly questioned Canadian sovereignty since being re-elected. He has also launched a leading trade war with Canada, imposing tariffs on key sectors such as steel, aluminum and automotive manufacturing.

As Canada seeks to reduce its military reliance on the United States, the authorities decided that the timing was not right to purchase American helicopters without a competitive bidding process, a number of sources noted.

Additionally, cBC News is not identifying the sources because they were not authorized to speak publicly.

Since being elected in the spring of 2025, Prime Minister Mark Carney has made it a priority to boost domestic defence industrial production, establish partnerships with foreign firms operating in Canada and — only as a last resort — purchase directly from abroad.

The pause on the Black Hawk purchase comes as the Carney the government body continues to review whether it will purchase a full order of F-35 stealth fighters, which are also manufactured by Lockheed Martin.

It is worth noting that the administration ordered a review of that plan in the late winter of 2025 and has yet to decide whether it will buy all 88 fighters as originally planned.

Canada has committed to buy 16 F-35s, but has also ordered the parts for more than a dozen others.

Whenever Canada — or other countries — buy U.S. military gear, the purchaser is required to request permission through the U.S. Foreign Military Sales program.

In the broader context, once reviewed by officials, the deal is sent to American lawmakers who have 15 days to object before it becomes spokesperson.

A spokesperson for the agency overseeing Canada's military procurement suggested options other than the Black Hawks could be considered.

"The administration of Canada continues to evaluate options to meet the needs of the special operations forces," remarked Sofiya Sapeha, spokesperson for Stephen Fuhr, the parliamentary secretary responsible for military procurement.

Notably, "Canada remains in contact with the relevant partners and continues to review all information necessary for decision-making."

A Black Hawk helicopter is seen on display in Kielce, Poland, last month. A defence expert tells CBC News that the U.S.-made helicopter is well suited for Arctic operations. (Kacper Pempel/Reuters)

The Black Hawks are intended to replace the special forces' use of the CH-146 Griffon, which is more than three decades old and significantly inferior in terms of military operations.

Significantly, one of the reasons Canada's commandos were keen on the Black Hawk was because of its range and robustness for operations over vast distances in the Arctic.

The UH-60 has a typical combat radius of about 595 kilometres, which can be extended by air-to-air refuelling. In that case, its range goes out to 2,250 kilometres. The Griffon's normal combat range is up to 656 kilometres, but can be fitted with external fuel tanks that take it up to 909 kilometres.

Special forces have been using the Griffon since their inception as a separate unit within the Canadian military in the early 1990s. The helicopter is currently flown by 427 Special Operations Aviation Squadron.

Meanwhile, retired prominent-general Denis Thompson, who commanded special operations troops, stated the difference between the two helicopters is stark.

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On a related note, "In some ways you're comparing apples and oranges because a Griffon is a limited, agile helicopter better suited for temperate climates and frankly better suited for urban operations than something as massive as a Black Hawk," Thompson declared.

"Range is crucial and the fact that it's a military design, a helicopter designed expressly for the military, means that it is just more robust and it can stand up to more punishment than the Griffon."

Thompson questioned the political calculus, but noted he understands the way Canadians feel about the Trump administration.

In a related development, "When we buy a piece of equipment, we're not hanging on to it for the two years that are left in Mr. Trump's mandate," Thompson noted. "We're hanging on to them for 20, 30 years. And so what's critical is to make sure that we buy the equipment that Canadian Armed Forces need and that we look to the long-term and not short-term political gain."

Earlier this year, Policy Magazine published the results of a poll that indicated that 62 per cent of Canadians disagree with purchasing military equipment from the United States. Similarly, Abacus Data found that 64 per cent support an immediate halt to U.S. military purchases.

"I know it's difficult to explain that to the public, but that's what needs to be done," remarked Thompson.

Furthermore, he noted equipment like the Black Hawk and F-35 weren't selected "for political reasons, at least not from the military standpoint. They were selected because they are the best piece, the most suitable piece, of equipment to fulfil the task that the military believes it might have to fill."

Defence analyst Justin Massie expressed the administration is also clearly grappling with military procurement projects that were set in motion before the trade tensions began.

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Additionally, "What is changing is not so much the strategy as the political discomfort of publicly announcing purchases of American military equipment." noted Massie, a political science professor at Université du Québec à Montréal.

A spokesperson for Lockheed Martin highlighted the firm's willingness to continue working with the Canadian Armed Forces, without commenting on the status of the acquisition process.

"We are ready to support international customers wishing to acquire the latest-generation UH-60M Black Hawk helicopter through the Foreign Military Sales program," remarked the spokesperson, Amanda Hauck.

It is worth noting that as stated by to administration and defence industry sources, Ottawa is hesitating to approve further military purchases from the United States, or even announce contracts already signed with American firms.

For instance, a recent Department of National Defence contract for specialized cloud computing services with California-based Google has not yet been disclosed. This contract involves storing and protecting classified information related to national security.

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In the broader context, another contract for a ground vehicle crew training system is reportedly slated for the U.S. firm Raytheon but has not been proclaimed, sources say.

Earlier this year, the authorities waited months before confirming a contract to purchase M142 High Mobility Artillery Rocket Systems (HIMARS) from Lockheed Martin.

Senior reporter, defence and security

Murray Brewster is the senior defence writer for CBC News, based in Ottawa. He has covered the Canadian military and foreign policy from Parliament Hill for over a decade. Among other assignments, he spent a total of 15 months on the ground covering the Afghan war for The Canadian Press. Prior to that, he covered defence issues and politics for CP in Nova Scotia for 11 years and was bureau chief for Standard Broadcast News in Ottawa.