DUBAI, United Arab Emirates (AP) — Aviation giants Airbus and Boeing Co. have received permission from the U.S. government to sell aircraft to Iran, part of landmark deals potentially worth some $50 billion in total following last year’s nuclear accord.

The announcements Wednesday came as Iranian and U.S. leaders are in New York for the United Nations General Assembly and show that the outgoing administration of President Barack Obama is honoring the economic terms of the nuclear pact.

The next administration, however, may change that equation for Airbus and Boeing, whose possible deal with Iran would be the biggest for an American company since the 1979 Islamic Revolution and U.S. Embassy takeover.

European airplane manufacturer Airbus announced the license from the U.S. Treasury’s Office of Foreign Assets Control early Wednesday. Boeing followed with its own announcement later in the day. Though based abroad, Airbus needed the approval of the U.S. Treasury for the deal because at least 10 percent of the manufacturer’s components are of American origin.