8409.10.00.80 - Other

This HTS category, 8409.10.00.80, specifically covers "Other" parts designed for use solely or principally with aircraft engines falling under headings 8407 or 8408. This designation applies to components that are not explicitly covered by more specific subheadings within the broader category of parts for aircraft engines. Examples might include specialized fasteners, sealing elements, or minor structural components that, while essential to the engine's function, do not fit into more defined subcategories.

This "Other" designation distinguishes it from its sibling, 8409.10.00.40, which is reserved for parts exclusively intended for use in civil aircraft engines. Therefore, items classified under 8409.10.00.80 would typically pertain to engines used in military or other non-civilian aircraft, or components that have a broader application within aircraft engines not limited to civilian use.

As a leaf node in the HTS, 8409.10.00.80 does not have further subcategories. The classification of a part under this heading hinges on its primary function being integral to the operation of an aircraft engine covered by headings 8407 or 8408, and its exclusion from any more precisely defined classification.