U.S. sets September deadlines to unwind Iran aviation and banking transactions
Rule ChangesOFAC grants brief wind-down windows as sanctions against Iran tighten
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Overview
Updated 58 minutes agoCompanies tied to Iran's civil aviation sector have until September 23 to unwind transactions. That's the deadline in General License DD, one of two wind-down authorizations the Treasury Department's Office of Foreign Assets Control (OFAC) published in the Federal Register on September 11.
General License CC expires four days earlier, on September 19, covering three Turkish financial firms blocked under Executive Order 13902. Both licenses are grace periods, not invitations for new business. After they lapse, unlicensed dealing carries enforcement risk.
Why it matters
Airlines, lessors, and financial institutions with Iranian exposure must wind down by September 23 or carry sanctions risk into October.
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The Treasury agency that administers U.S. economic sanctions and trade restrictions.
Three Turkish financial firms blocked under U.S. sanctions on September 4, 2026.
Timeline
August 2026 September 2026
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Federal Register publishes GLs CC and DD
Today PublicationBoth licenses formalized in the Federal Register (91 FR 57795), confirming the September 19 and 23 deadlines.
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OFAC suspends civil aviation licenses, issues GL DD
RegulatorySuspends 560.522, 560.528, 560.529 and stays Iran GL J-1; GL DD authorizes wind-down through September 23.
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OFAC blocks Golden Global firms, issues GL CC
SanctionsThree Turkish financial firms designated under E.O. 13902; wind-down authorized through September 19.
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OFAC issues GLs AA and BB
RegulatoryInitial wind-down authorizations for Iran-related transactions under E.O. 13902 and the ITSR, with deadlines of October 23 and September 8.
Historical Context
2 moments from history that rhyme with this story — and how they unfolded.
U.S. reimposes Iran sanctions after JCPOA exit (2018)
After President Trump withdrew the U.S. from the 2015 nuclear deal in May 2018, OFAC reimposed sanctions with two wind-down windows: 90 days for sectors including automobiles and gold, and 180 days for oil and banking. Companies raced to unwind Iranian business before the August 6 and November 4 deadlines.
Most wind-downs completed; oil buyers cut Iranian imports under threat of secondary sanctions.
The pattern of OFAC granting finite wind-down periods before full sanctions effect became standard practice.
GLs CC and DD follow the same template: short grace periods before full restriction takes hold.
E.O. 13902 takes effect (2020)
Executive Order 13902, signed January 10, 2020, expanded U.S. sanctions to Iran's construction, mining, manufacturing, and textiles sectors. OFAC issued wind-down authorizations so companies could exit those sectors without immediate penalties.
Foreign companies withdrew from Iranian construction and manufacturing projects; secondary sanctions risk pushed most activity out of regulated channels.
E.O. 13902 remains the legal basis for blocking Iranian-sector actors, including the Golden Global entities named in GL CC.
GL CC is the most recent application of E.O. 13902, targeting new entities within its six-year-old scope.
