This standard is intended to provide a uniform method of determining proportion nonconforming in finished components and to provide a standardized definition of the quality index referred to as PPM. The method used here is primarily directed at components whose production or procured volume is large enough@ during some predefined sampling period@ to give statistically meaningful information.
SAE EIA-554-2-2015 history
2015SAE EIA-554-2-2015 Assessment of Nonconforming Levels In Parts Per Million (PPM) (Formerly TechAmerica EIA554-2)