PARIS — EADS, the parent company of Airbus, is bracing for months of thorny negotiations with Germany as the country seeks to cancel billions of dollars’ worth of orders for military aircraft in an effort to cut its defense budget.

Thomas de Maizière, the German defense minister, is expected to present the program of radical cuts to the government’s budget committee on Oct. 26. But according to a confidential document that has been leaked to news organizations in recent days, the ministry hopes to sharply reduce its commitments to purchase a range of flying hardware, including A400M transporters, Eurofighter Typhoon fighter jets, as well as NH-90 transport and Tiger attack helicopters.

“This is another sad chapter in the saga of shrinking European budgets — with major industrial and political implications,” said Alexandra Ashbourne, an aerospace and defense industry consultant in London. “This is going to be very difficult for the industry to absorb, on the one hand, while on the other you will see the British, the Spanish and everyone else once again questioning Germany’s commitment to European defense.”

Less than two years after European governments agreed to a complex rescue program for the long-delayed four-engine turboprop A400M, Germany, the largest customer for the plane, now wants to buy 40 instead of 53 of the airlifters, said a government official, who confirmed the figures cited in the document but declined to be identified because the information was classified.