The U.S. Treasury Department’s Office of Foreign Assets Control designated multiple Iranian airlines on September 8, 2026, under Executive Order 13902, accusing the carriers of supporting military logistics for the Islamic Revolutionary Guard Corps. The measures include Iran Aseman Airlines and Mahan Air, which has been under U.S. sanctions since 2011. U.S. persons are barred from transactions with the listed entities, while foreign companies providing material assistance risk secondary sanctions. OFAC also issued General License 37 for certain wind-down activities and suspended prior authorizations for re-exporting civil aircraft to Iran. The action is part of Operation Economic Outcast, launched on August 24 and covering aviation, digital assets and shipping. Some entities also face designations under Executive Order 13224. There was no immediate market reaction, but the measures increase screening and supply-chain risks for exchanges, airlines, lessors, maintenance providers and parts suppliers.