Customs Modernization and Tariff Act
Section 818. Stores for Consumption. - Stores for consumption shall include:
(a) Goods intended for use by the passengers and the crew on board vessels, aircrafts, or trains, whether or not sold; and
(b) Goods necessary for the operation and maintenance of vessels, aircrafts, or trains including fuel and lubricants but excluding spare parts and equipment which are either on board upon arrival or are taken on board during the stay in the customs territory of vessels, aircrafts, or trains used, or intended to be used, in international traffic for the transport of persons for remuneration or for the industrial or commercial transport of goods, whether or not for remuneration.