8411.11.80.00 - Other

This HTS category, 8411.11.80.00, covers "Other" turbojets with a thrust not exceeding 25 kN. This classification is intended for turbojet engines that do not fit into more specific subheadings within the 8411.11 category, which deals with turbojets of this thrust capacity. The primary defining characteristic is their application as prime movers for aircraft, providing thrust through the expulsion of hot gases.

While the sibling category 8411.11.40.00 specifically designates "Aircraft turbines," this "Other" category functions as a residual designation. It is crucial to ensure that goods classified here genuinely do not meet the criteria for any more precisely defined subheading. This might include specialized turbojets designed for auxiliary power units on aircraft, or perhaps experimental turbojet designs that, while within the thrust parameters, are not solely intended for primary propulsion and thus do not fall under the specific "Aircraft turbines" designation.

As this is a leaf node, there are no further subcategories to introduce. Classification at this level hinges on the accurate assessment of the turbojet's thrust output, ensuring it does not exceed 25 kN, and confirming that it is not classifiable under any more specific, enumerated subheading within the broader turbojet classification. The principle of "most specific description" is paramount when determining the correct classification.