This document provides a basic uniform method for ensuring that aerospace standard parts (products) conform with the requirements of technical specifications referring to qualified parts and for a manufacturer of such parts to have a qualified management system at least equivalent to AS/EN/SJAC9100.These standards apply when called out in the aerospace standard part standard.9100 Quality Systems - Model for Quality Assurance in Design, Development, Production, Installation and ServicingNOTE: This standard is published as an equivalent document in several countries. This standard uses the 9100 designation when referring to this standard.9103 Variation Management of Key CharacteristicsNOTE: This standard is published as an equivalent document in several countries. This standard uses the 9103 designation when referring to this standard.