Not necessarily. While both may fall within SITC 71481, the HTS subheading at the 10-digit level and applicable regulatory requirements differ based on end use. Aircraft-certified turbines require FAA airworthiness documentation, whereas industrial units are governed by commercial equipment standards. Consulting a licensed customs broker before entry is recommended to confirm the correct classification.

A turbopropeller transmits most of its thrust through a gearbox-driven propeller, while a turbofan generates thrust primarily through a large ducted fan. This mechanical distinction drives separate SITC headings: turbopropellers fall under 71481, while turbofans are generally classified with turbojets under 71441. Engineering drawings or OEM specifications are the most reliable basis for making this determination at entry.