8407.10.00.40 - 373 kW or over

This HTS classification pertains to new spark-ignition reciprocating or rotary internal combustion piston engines specifically designed and intended for use in civil aircraft, with a power output of 373 kilowatts (kW) or greater. These engines are typically advanced, high-performance units that drive the propulsion systems of larger commercial aircraft or specialized aviation equipment. The classification hinges on both the intended application (civil aircraft) and the significant power rating, distinguishing them from smaller or less powerful aircraft engines.

The primary distinction for this category lies in its power output threshold. It is differentiated from its sibling category, HTS 8407.10.00.20, which covers similar engines for civil aircraft but with a power output of less than 373 kW. Therefore, when classifying an engine falling under HTS 8407.10.00, the determining factor between these two subcategories is the engine's measured horsepower or kilowatt rating.

As this node represents a leaf category within the HTS database, there are no further subcategories to introduce. Classification at this level is definitive based on the product's nature as a new spark-ignition internal combustion piston engine for civil aircraft and its power output of 373 kW or over. Importers and exporters must ensure accurate documentation reflecting the engine's specifications, particularly its power rating, to facilitate correct customs processing.