Two aerospace industry giants, Brazil’s Embraer and American defense powerhouse Northrop Grumman, have forged a strategic partnership aimed at propelling the KC-390 Millennium military transport and refueling aircraft onto the global stage. The primary objective: to convince the U.S. Air Force and other foreign militaries of the superiority of this multi-mission aircraft, at a time when the Pentagon is re-evaluating its future air mobility options.
Technological Innovation, The Partnership’s Cornerstone
The new alliance, formalized by a memorandum of understanding, sees Northrop Grumman taking a key role in technological development and integration. The American company will study ways to incorporate an autonomous boom refueling system into the KC-390, along with other essential mission equipment. This collaboration is crucial for Embraer, offering a significant advantage in penetrating the highly competitive and lucrative U.S. market.
Tom Jones, head of Northrop Grumman’s aeronautics division, emphasized the importance of partnerships in the context of Department of Defense priorities. „Secretary of Defense Pete Hegseth has been talking a lot about getting capability to the warfighter as fast as possible,” Jones stated, gesturing towards a KC-390 parked on the tarmac. „And I think one of the great ways to do that is to take partnerships between companies that have complementary capabilities.” Bosco da Costa Jr., president of Embraer’s defense division, added that the partnership affords the opportunity to „leverage this platform [the KC-390] to another level.” Both leaders are convinced that „this platform will bring a winning value proposition to our customers around the globe, not only here in the US, but internationally.”
Engineering Challenge: The Autonomous Refueling Boom, A Key Element
The development and integration of a new refueling boom represent a significant engineering challenge. Executives aim for this system to be optional for buyers and retrofittable on existing aircraft while retaining the aircraft’s multi-mission capability, including cargo transport. Such a boom would enable the Millennium to refuel a wider range of aircraft, crucially including those flown by the U.S. Air Force, beyond those it can already refuel with a hose-and-drogue system. Jones noted that the team would like to demonstrate this boom refueling capability in „low, single-digit years.”
The success of such a boom would likely require considerable internal investment, and an order from a major customer like the U.S. Air Force would certainly solidify the business case. Although Jones was reticent to directly link Northrop’s commitment to an American acquisition for a next-generation tanker program (NGAS), he stressed: „I believe there’s going to be a lot of international demand for this.”
Global Ambitions: Beyond American Borders, A Vast and Underserved Market
This partnership comes after a similar agreement between Embraer and U.S. defense contractor L3Harris fell apart in 2024. It also marks a new foray by Northrop Grumman into the world of air refueling, after the company initially won the original U.S. Air Force KC-X contract in partnership with Airbus, only to be stymied by a protest from Boeing, which subsequently secured the contract.
Embraer manufactures the KC-390 in Brazil but has reiterated its readiness to deepen its investment in the U.S. by opening a dedicated Millennium facility. On Northrop’s side, Jones stated the company would have to sort out where to distribute its manufacturing tasks among its various sites. Leaders from both companies also emphasized other partnership opportunities outside the United States. Da Costa, for example, mentioned that the Netherlands and Czechia – two of the countries that have acquired the Millennium in recent years – are interested in using the aircraft to refuel forthcoming F-35 fleets, which require boom-based refueling.
„I think if we only focus on the domestic market, we’re missing a much bigger picture of all the opportunity that’s really out there,” Jones concluded. „There’s a pretty large installed base of fighter aircraft around the world with all of our allies that we have that need fixed boom refueling capabilities, and right now they don’t have an option, like the option that we’re going to create together.”
