U.S. Classification: Textile or Aircraft Part
Understanding Component Classification: A Key Ruling on Aircraft Brake Disc Materials

On January 30, 2025, the U.S. Court of International Trade (CIT) issued a pivotal ruling that sheds light on the complexities of classifying components used in aircraft manufacturing, particularly in the context of aircraft brake discs. This case revolved around the classification of fabric segments made from polyacrylonitrile fiber fabric, which are used as upstream inputs in the production of brake discs for aircraft. The Court's decision has profound implications for how similar components should be classified under the Harmonized Tariff Schedule of the United States (HTSUS), and it offers key insights into the evolving landscape of product classification in the global trade arena.
The Case: Textile or Aircraft Part?
At the heart of the case was a challenge to the classification of these fabric segments, which are made up of radial, web, and chordal fabric segments. The key question: should they be classified as aircraft parts under HTSUS 8803.20.00, or should they fall under the broader category of other textile articles under HTSUS 6307.90.98?
These fabric segments undergo an extensive transformation process, ultimately becoming rigid preforms that are integral to the production of aircraft brake discs. Despite this transformation, the segments were originally classified under a textile article code that carried a 7% duty—a classification based on the raw material's fabric-like properties, despite its eventual function in the aerospace sector.
The Court’s Ruling
The CIT ruled that the fabric segments should indeed be classified as aircraft parts under HTSUS 8803.20.00, overturning the previous classification as textile articles.
In its decision, the Court emphasized that the segments—although not directly installed on an aircraft—are indispensable components in the brake disc manufacturing process. The Court pointed out that while these fabric segments no longer retain their fabric-like qualities once transformed into rigid preforms, their specialized design and purpose as components in a critical aerospace product should not be overlooked.
The CIT's ruling reflects the understanding that, despite being at an intermediate stage of production, these fabric segments play a critical role in the manufacturing process. The Court focused on the segments’ intended use rather than their state at the time of importation, illustrating that classification should be based on the functional role of the product in its final form, rather than its appearance or composition at the point of entry.
The Broader Implications
This ruling is significant for several reasons:
Complexity in Component Classification: It illustrates the intricate nature of classifying components that, while not fully formed or ready for final installation, are still integral to the production of a finished product. The ruling underscores that components involved in a multi-step manufacturing process may still qualify for specific classification codes, even if they aren't the final, installed parts.
Product Transformation and Intended Use: The Court’s decision highlights the importance of understanding the transformation process and the intended end-use of goods when determining their correct classification. It affirms that the purpose of a product—how it fits into a larger manufacturing system—should influence its classification, even when its form is altered during production.
Duty Implications: For businesses involved in aerospace manufacturing, this ruling offers clarity on how intermediate materials should be classified and taxed. The decision could potentially lead to adjustments in duty rates for materials like these fabric segments, which are now recognized as components of aircraft parts. This will likely have a significant financial impact on manufacturers who import such materials.
Wider Implications for Trade Compliance: The ruling serves as a reminder of the critical need for businesses to stay vigilant in their classification practices. As global supply chains grow increasingly complex, it is essential to properly assess and classify components based on their functional role in the final product. Misclassification can result in unnecessary duties or penalties, emphasizing the need for robust compliance programs.
A Final Thought
This case serves as a powerful reminder that product classification is not just about assessing a product's physical characteristics at the point of importation; it’s about understanding the product's place in a broader manufacturing context.
For customs professionals, this ruling reinforces the necessity of considering a product’s transformation and intended use when determining its classification.
As industries become more specialized and supply chains more interconnected, the ability to navigate complex classification rules will only grow in importance. Whether you're working with aerospace components or other complex goods, it’s essential to stay informed about the latest rulings and best practices to ensure compliance and avoid costly misclassifications.
What’s your experience with classifying intermediate goods or components? Have you encountered similar challenges in your own practice? Let’s continue the conversation in the comments below!




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