Section 301 HTS Codes: China Lists, Nicaragua, and Legacy Aircraft Families

Informational only — not legal advice.

This page is the evergreen code reference for the Section 301 Chapter 99 families.

The main critical point: Section 301 is not the same thing as 9903.88 alone. Searchers often mean the China tariff lists when they say “Section 301,” but the live code universe is broader than that.

Background on Section 301

Section 301 comes from the Trade Act of 1974. It allows the United States to respond when USTR finds that a foreign country is using acts, policies, or practices that are unreasonable, discriminatory, or otherwise burden U.S. commerce.

In practice, Section 301 became closely associated with the China tariff lists, which is why many importers equate the authority with 9903.88.*. But the authority is broader than the China shorthand. Different investigations and actions can generate different Chapter 99 families, which is why a useful Section 301 page has to separate current China lists from other live or legacy 301 code groups.

Current status

As of March 16, 2026:

• the current CBP FAQ is primarily China-focused
• the live schedule still contains non-China Section 301 families that should not be collapsed into the China shorthand
• active USTR investigative activity extends beyond the settled China code families

That means a good Section 301 reference page needs to separate:

• current China code families
• the Nicaragua line
• legacy aircraft codes
• watchlist investigations that do not yet have settled code families

How to use this page with our HTS tool

1. Click the exact 9903.* code shown on the entry.
2. In the HTS tool, confirm whether it belongs to the China lists, the Nicaragua line, or the legacy aircraft family.
3. Compare it with the base Chapter 1-97 line and any other Chapter 99 overlays on the same entry line.
4. Do not assume “China” just because the code starts with 9903.89 or 9903.91.

Full Section 301 code list

China-focused lists

• 9903.88.01-.28: 9903.88.01, 9903.88.02, 9903.88.03, 9903.88.04, 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.09, 9903.88.10, 9903.88.11, 9903.88.12, 9903.88.13, 9903.88.14, 9903.88.15, 9903.88.16, 9903.88.17, 9903.88.18, 9903.88.19, 9903.88.20, 9903.88.21, 9903.88.22, 9903.88.23, 9903.88.24, 9903.88.25, 9903.88.26, 9903.88.27, 9903.88.28
• 9903.88.33-.70: 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.39, 9903.88.40, 9903.88.41, 9903.88.42, 9903.88.43, 9903.88.44, 9903.88.45, 9903.88.46, 9903.88.47, 9903.88.48, 9903.88.49, 9903.88.50, 9903.88.51, 9903.88.52, 9903.88.53, 9903.88.54, 9903.88.55, 9903.88.56, 9903.88.57, 9903.88.58, 9903.88.59, 9903.88.60, 9903.88.61, 9903.88.62, 9903.88.63, 9903.88.64, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, 9903.88.70
• 9903.91.01-.16: 9903.91.01, 9903.91.02, 9903.91.03, 9903.91.04, 9903.91.05, 9903.91.06, 9903.91.07, 9903.91.08, 9903.91.09, 9903.91.10, 9903.91.11, 9903.91.12, 9903.91.13, 9903.91.14, 9903.91.15, 9903.91.16
• 9903.92.10 and 9903.92.80: 9903.92.10, 9903.92.80

Nicaragua

• 9903.89.01: 9903.89.01

Legacy large civil aircraft family

• 9903.89.05-.63 (legacy aircraft pattern): 9903.89.05, 9903.89.07, 9903.89.10, 9903.89.13, 9903.89.16, 9903.89.19, 9903.89.22, 9903.89.25, 9903.89.28, 9903.89.31, 9903.89.34, 9903.89.37, 9903.89.40, 9903.89.43, 9903.89.46, 9903.89.49, 9903.89.50, 9903.89.52, 9903.89.55, 9903.89.57, 9903.89.59, 9903.89.61, 9903.89.63

Common confusions

• Section 301 is not synonymous with 9903.88 alone.
• The current CBP FAQ is China-focused, but the live schedule contains non-China Section 301 families too.
• Presence in the schedule does not, by itself, tell you whether a legacy family is still actively collectible on a given date.