This part of IEC 62668, which is a technical specification, defines requirements for avoiding the use of counterfeit, recycled and fraudulent components when these components are not purchased from the original component manufacturer (OCM) or are purchased from outside of franchised distributor networks for use in the aerospace, defence and high performance (ADHP) industries. This practice is used, as derogation, only when there are no reasonable or practical alternatives. NOTE Typically this technical specification is used in conjunction with IEC TS 62239-1 and IEC TS 62668-1, enabling ADHP industries to manage and avoid the use of counterfeit, recycled and fraudulent components in their supply chains. Although developed for the ADHP industry, this document may be used by other high- performance and high-reliability industries, at their discretion.