8411.11 - Of a thrust not exceeding 25 kN:

This HTS category, 8411.11, encompasses turbojets designed for generating a thrust of 25 kilonewtons (kN) or less. These are jet engines whose primary function is to produce thrust by expelling a high-speed jet of gas. They are commonly found in smaller aircraft, unmanned aerial vehicles (UAVs), and certain specialized industrial applications where moderate power output is sufficient. The key defining characteristic for classification within this specific subheading is the maximum thrust capability, specifically limiting it to this lower range.

Distinguishing this category from its sibling, 8411.12, is crucial for accurate classification. While both subheadings fall under turbojets, 8411.12 covers those with a thrust exceeding 25 kN. Therefore, the precise measurement of the engine's maximum thrust is the definitive criterion to differentiate between these two closely related classifications, ensuring that only turbojets within the specified thrust limitation are assigned to 8411.11.

Within 8411.11, further subclassification is provided to refine the identification of specific types of turbojets. The subcategories 8411.11.40.00 for "Aircraft turbines" and 8411.11.80.00 for "Other" allow for a more granular approach. "Aircraft turbines" are specifically designated for use in powered flight, while "Other" would encompass turbojets for non-aircraft applications that still meet the thrust criteria. This breakdown facilitates more precise statistical tracking and customs processing.