8411.91.10.90 - Other

This HTS category, 8411.91.10.90, specifically covers "Other" parts for turbojets or turbopropellers that are made of cast iron. The defining characteristic of this classification is that these cast-iron parts have undergone minimal processing. This processing is limited to cleaning and machining solely for the removal of casting imperfections such as fins, gates, sprues, and risers, or to prepare the part for subsequent finishing operations. Essentially, these are raw or semi-finished cast-iron components awaiting further manufacturing.

This classification is distinguished from its sibling category, 8411.91.10.60, by its intended application. While 8411.91.10.60 is reserved for parts specifically designated for use in civil aircraft, this category, 8411.91.10.90, is for cast-iron parts of turbojets or turbopropellers that are not exclusively intended for civil aircraft, or for which such specific application is not the primary classification criterion. The material (cast iron) and the limited nature of its machining are common to both, but the end-use exclusivity is the differentiating factor.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, the focus for classification under 8411.91.10.90 rests on the precise interpretation of "Other" in conjunction with the preceding descriptive elements: the material being cast iron, the part belonging to turbojets or turbopropellers, and the minimal machining performed as described in the parent categories. Importers must ensure that the parts are indeed cast iron and have only undergone the specified cleaning and basic machining to fall under this specific classification.