Tariff Concession Order 0512081 declares that specific wind‑turbine generator parts (hubs and chassis beams) classified at tariff code 8503.00.00 are covered by Item 50 of Schedule 4 to the Customs Tariff Act 1995, effective 8 Sept 2005 until revoked (made under s.269P; revocation under ss.269SC–269SD).
Mechanically, it alters importers' tariff treatment for those listed parts so importers pay the duty treatment set by Schedule 4. The declaration was made by a delegate of the CEO and is limited to the listed goods.