This Order (under s.269P of the Customs Act 1901) declares a specific class of locomotive main generators (tariff code 8501.33.00) to be goods covered by Part III, Schedule 4 item 50 of the Customs Tariff Act 1995, effective 22 Dec 2006 and continuing until revoked under ss.269SC/269SD. Mechanically, it changes the tariff treatment of the listed generators; importers of those generators are directly affected because the goods are treated under the specified Schedule 4 item, altering their customs classification and related compliance obligations.