News

Section 232 UAS Tariffs, Drawback Corrections, and ACE Refund Alerts

Published: August 19, 2026 · 5 min read

Key Points

A new Federal Register document published August 19, 2026 adjusts imports of unmanned aircraft systems (UAS) and UAS components under what appears to be a Section 232 action, directly affecting duty exposure for drone importers and their brokers.
CBP issued a correction on August 18, 2026: HTSUS classifications 9903.05.01 (Section 301 duties on certain products from Brazil) and 9903.05.20 through 9903.05.84 (Section 301 Forced Labor Import Duties) are drawback eligible, reversing an erroneous August 12, 2026 deployment that blocked those claims.
Customs brokers and importers should immediately run the ACE REV-613 (ACH Rejected Refunds Report) to identify any refunds rejected due to missing ACH enrollment before those refunds are lost.
CBP flagged delays in outbound ACE notifications for Air, Ocean, Rail, Manifest, and In-Bond transactions on August 18, 2026; a follow-up resolution notice was pending.
An ACE Certification environment maintenance window ran August 19, 2026 from 5:00 p.m. to 8:00 p.m. ET, which may affect testing pipelines.

New Section 232 action on unmanned aircraft systems and components
Drawback eligibility correction for Section 301 and Forced Labor duty classifications
ACE rejected refunds: the REV-613 report and ACH enrollment
ACE outbound notification delays
ACE Certification maintenance window
What importers, brokers, and compliance teams should do now
Key references

Three developments from the week of August 18, 2026 demand immediate attention from trade-compliance teams: a new tariff action covering unmanned aircraft systems, a corrected CBP ruling restoring drawback eligibility for two Section 301 classification sets, and a CBP alert warning that some duty refunds have already been rejected in ACE because importers lack ACH enrollment. The links throughout this article go directly to the primary documents, including the Federal Register notice and CBP CSMS messages themselves. Read the source.

New Section 232 action on unmanned aircraft systems and components

On August 19, 2026, the Federal Register published a document titled Adjusting Imports of Unmanned Aircraft Systems and Unmanned Aircraft Systems Components Into the United States. The title and Federal Register citation (2026-16979) indicate this is a Section 232 trade-adjustment action, which carries the force of a Presidential proclamation and typically takes effect immediately or on a date specified in the proclamation itself.

Importers of commercial drones, drone frames, propulsion systems, flight controllers, cameras, and related UAS subcomponents need to review the full text to determine: which HTSUS subheadings are covered, what additional duty rate applies, whether any quota or tariff-rate quota mechanism is included, and whether any product exclusion process will be opened. Given that a large share of UAS and UAS components originate in China and are already subject to Section 301 Column 1 rates plus existing Section 301 duties, stacking this new action could materially change landed cost calculations. Brokers should flag all open purchase orders and pending entries covering drone-related goods.

Drawback eligibility correction for Section 301 and Forced Labor duty classifications

On August 12, 2026, CBP deployed an update to drawback FD07 validations that incorrectly blocked drawback claims for two groups of HTSUS classifications:

9903.05.01, covering Section 301 duties on certain products from Brazil.
9903.05.20 through 9903.05.84, covering Section 301 Forced Labor Import Duties.

CBP has since corrected the production validations and updated the Drawback Error Dictionary, as detailed in CSMS 69567203. Both classification sets are drawback eligible. If your organization filed drawback claims between August 12 and the correction date and received FD07 errors for these HTS codes, those claims should be reviewed and refiled. Compliance teams should also confirm that internal drawback-filing systems have updated their own validation tables to reflect the corrected allowance.

ACE rejected refunds: the REV-613 report and ACH enrollment

In CSMS 69570464, CBP advises customs brokers to run the ACH Rejected Refunds Report (REV-613) in ACE Reports to identify refunds that have been rejected because the importer is not enrolled in ACH (Automated Clearing House). Importers can run the same report themselves. A rejected refund is not automatically reissued; a refund that sits rejected may require action to collect.

The practical steps are: pull the REV-613 report for all active importer accounts, identify any rejected line items, confirm or establish ACH enrollment for each affected importer of record, and then coordinate with CBP or the relevant filer to determine the path to reissuance. This is particularly important in the current environment, where IEEPA-related duty refunds and Section 301 drawback payments may be in the pipeline.

ACE outbound notification delays

On August 18, 2026, CBP issued CSMS 69571234 acknowledging delays in outbound ACE notifications across Air, Ocean, Rail, Manifest, and In-Bond message types. CBP stated it was investigating and would issue a follow-up once resolved. Brokers and carriers relying on automated ACE notification triggers for release decisions, in-bond closure, or downstream partner alerts should not assume silence means no activity; monitor entries directly in ACE rather than relying solely on push notifications until CBP confirms resolution.

ACE Certification maintenance window

Per CSMS 69572590, CBP ran a standard invasive maintenance window in the ACE Certification (test) environment on August 19, 2026 from 5:00 p.m. to 8:00 p.m. ET. This affects certification testing only, not the ACE production environment. Development and QA teams that had testing scheduled during that window should reschedule any runs that did not complete.

What importers, brokers, and compliance teams should do now

Read the full text of the UAS Section 232 Federal Register notice to identify covered HTSUS subheadings, the applicable duty rate, and the effective date, then flag all open UAS and UAS-component purchase orders accordingly.
Pull the ACE REV-613 ACH Rejected Refunds Report for every importer-of-record account and resolve missing ACH enrollment before any pending refunds are further delayed.
Review drawback claims filed between August 12 and August 18, 2026 that cite HTSUS 9903.05.01 or 9903.05.20 through 9903.05.84 for FD07 errors, and refile or reactivate those claims now that eligibility is restored.
Monitor ACE entries directly rather than relying on push notifications until CBP confirms that outbound notification delays have been fully resolved.

Key references

Recovering IEEPA tariff refunds? Get started with CustomsGenius to streamline your refund process.

About the Author

Franz Brotzen, CustomsGenius CEO & Founder. Franz is a published researcher on U.S. trade policy. He has worked at think tanks in Washington DC and Tokyo, where his academic publications focussed on tariffs and legal compliance. Franz received his JD from Harvard Law School.