SAE AS6171/1 Suspect / Counterfeit Test Evaluation Method
AS 6171/1 describes an assessment of the effectiveness of a specified test plan used to screen for counterfeit parts. The assessment includes the determination of the types of defects detected using a specified test plan along with the related counterfeit type coverage. The output of this evaluation will produce Counterfeit Defect Coverage (CDC), Counterfeit Type Coverage (CTC), Not-Covered Defects (NCDs), and Under-Covered Defects (UCDs). This information will be supplied to the test laboratory’s customer in both the test report and the Certificate of Quality Conformance (CoQC). This evaluation method does not address the effectiveness of detecting tampered type devices.
The Test Evaluation Method also describes an Optimized Test Sequence Selection, in which a test sequence is selected that maximizes the CDC utilizing test cost and time as constraints, for any tier level except the Critical Risk Level. The constraints can be adjusted until the desired CDC is achieved. The output of the Optimized Test Sequence Selection also includes CTC, NCDs, and UCDs.
AS 6171/1 is intended to provide guidance and requirements for the test laboratory in the evaluation of counterfeit parts detection testing performed by the test laboratory. This evaluation includes the determination of the Counterfeit Defect Coverage (CDC), the Counterfeit Type Coverage (CTC), the Under-Covered Defects (UCD), and the Not-Covered Defects (NCD). A method is also described to select a sequence of tests for a given resource utilization.
Many test plans have been developed by organizations to screen for counterfeit parts. There is a need to evaluate the effectiveness of different test plans to provide a common comparison of testing deployments utilized by different organizations. This document provides a framework to assess a test plan to report CDC, CTC, NCDs, and UCDs which measure the effectiveness of the specified test plan for counterfeit parts detection.