Specifies quality system requirements to be used where a contract between two parties requires the demonstration of the capability of a supplier to supply and design product. The requirements specified are aimed primarily at preventing nonconformity at all stages (from design to servicing). Applies in contracts when: confidence in product conformance can be attained by satisfactory demonstration of certain supplier's capabilities in development, design, servicing, production and installation; the contract specifically requires design effort and the product requirements need to be established or are stated principally in performance terms. Also covers Quality System Requirements such as Management Responsibility, Quality System, Contract Review, Design Control, Document Control, Purchasing, Servicing and Training.