This Tariff Concession Order applies Part III, Schedule 4 Item 50 of the Customs Tariff Act 1995 to a narrow class of locomotive brake-rack assemblies (those with brake rack mountings, hoses and/or pipes, and valves). It took effect on 13 May 2008 and remains in force until revoked under the Customs Act 1901.
Mechanically, a delegate of the CEO (Paul Mercer) declared that imports matching tariff classification 8607.21.00 and the listed description receive the Schedule 4 treatment. Importers must match the technical description for classification; revocation is at the administration's discretion (see ss 269P, 269SC, 269SD).