Chapter 99 heading 9903.02.90
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts, and components; their other parts, components, and subassemblies; and ground flight simulators and their parts and components…
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts, and components; their other parts, components, and subassemblies; and ground flight simulators and their parts and components of Liechtenstein, excluding unmanned aircraft, provided for in subdivision (v)(xxv)(c) of U.S. note 2 to this subchapter