Sch 10 para 48
The organisation must have procedures to ensure that— (a) components (including spare parts) and materials are used as specified in the maintenance orders and supplier documentation; (b) components and materials are stored, handled and transported in a manner that prevents wear and damage and as specified in the maintenance orders and supplier documentation; (c) all components and materials, including those provided by the customer, comply with relevant national and international rules as well as with the requirements of relevant maintenance orders.