HTS heading 8802

Other aircraft (for example, helicopters, airplanes, except unmanned aircraft of heading 8806); spacecraft (including satellites) and suborbital and spacecraft launch vehicles — 44 codes under this heading, with the duty on each.

35 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.

Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.