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U.S. sets September deadlines to unwind Iran aviation and banking transactions

U.S. sets September deadlines to unwind Iran aviation and banking transactions

Rule Changes

OFAC grants brief wind-down windows as sanctions against Iran tighten

Yesterday: Federal Register publishes GLs CC and DD

Overview

Updated Yesterday

Companies 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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Key Indicators

Sep 23
GL DD wind-down deadline
Civil aviation transactions must be unwound by 12:01 a.m. EDT September 23, 2026.
Sep 19
GL CC wind-down deadline
Golden Global entity transactions must be unwound by 12:01 a.m. EDT September 19, 2026.
4
Suspended Iran general licenses
OFAC suspended 31 CFR 560.522, 560.528, and 560.529, and stayed Iran GL J-1 on September 8.
15
Days of wind-down in each license
GL CC runs September 4-19; GL DD runs September 8-23. Both give exactly 15 days.

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People Involved

Bradley T. Smith
Bradley T. Smith
Director, Office of Foreign Assets Control
Signed both GLs CC and DD; leads OFAC sanctions administration

Organizations Involved

U.S. Treasury — Office of Foreign Assets Control (OFAC)
U.S. Treasury — Office of Foreign Assets Control (OFAC)
Federal Agency
Issued GLs CC and DD; suspended three ITSR general licenses and stayed GL J-1

The Treasury agency that administers U.S. economic sanctions and trade restrictions.
Golden Global group (3 firms)
Golden Global group (3 firms)
Turkish financial firms
Blocked under E.O. 13902 on September 4, 2026

Three Turkish financial firms blocked under U.S. sanctions on September 4, 2026.

Timeline

August 2026 September 2026

4 events Latest: Yesterday
Tap a bar to jump to that date

  1. Federal Register publishes GLs CC and DD

    Latest Publication

    Both licenses formalized in the Federal Register (91 FR 57795), confirming the September 19 and 23 deadlines.

  2. OFAC suspends civil aviation licenses, issues GL DD

    Regulatory

    Suspends 560.522, 560.528, 560.529 and stays Iran GL J-1; GL DD authorizes wind-down through September 23.

  3. OFAC blocks Golden Global firms, issues GL CC

    Sanctions

    Three Turkish financial firms designated under E.O. 13902; wind-down authorized through September 19.

  4. OFAC issues GLs AA and BB

    Regulatory

    Initial wind-down authorizations for Iran-related transactions under E.O. 13902 and the ITSR, with deadlines of October 23 and September 8.

Scenarios

1

Wind-down deadlines pass without extension

Likely Resolves by Q3 2026

Discussed by: Analysts at Global Trade and Sanctions Law; OFAC's published license terms

Companies meet the September 19 and 23 deadlines and finish unwinding transactions. After September 23, any activity previously covered by the suspended licenses requires a specific license from OFAC, which analysts say will be harder to obtain. The suspension notice already states that transactions under the suspended licenses are no longer authorized except through GL BB or GL DD.

2

OFAC extends wind-down deadlines

Possible Resolves by Q3 2026

Discussed by: Sanctions compliance practitioners

If wind-down proves difficult for companies with complex aircraft leases or financing arrangements, OFAC could issue amended licenses extending the deadlines. The agency has historically granted limited extensions when industry demonstrates hardship. Any extension would appear on OFAC's website and in the Federal Register before the current deadlines.

3

Sanctions escalation continues beyond aviation

Possible Resolves by End of 2026

Discussed by: OFAC's September 8 suspension notice; sanctions policy analysts

The suspension notice says the changes reflect a shift in U.S. foreign policy toward Iran. OFAC could block additional Iranian entities under E.O. 13902 or target other sectors, repeating the pattern of short wind-down licenses followed by full restriction.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

May-November 2018

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.

Then

Most wind-downs completed; oil buyers cut Iranian imports under threat of secondary sanctions.

Now

The pattern of OFAC granting finite wind-down periods before full sanctions effect became standard practice.

Why this matters now

GLs CC and DD follow the same template: short grace periods before full restriction takes hold.

January 2020

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.

Then

Foreign companies withdrew from Iranian construction and manufacturing projects; secondary sanctions risk pushed most activity out of regulated channels.

Now

E.O. 13902 remains the legal basis for blocking Iranian-sector actors, including the Golden Global entities named in GL CC.

Why this matters now

GL CC is the most recent application of E.O. 13902, targeting new entities within its six-year-old scope.

Sources

(7)
+4
Federal Register Office of Foreign Assets Control Global Trade and Sanctions Law Office of Foreign Assets Control Office of Foreign Assets Control Office of Foreign Assets Control Federal Register