I’m in the “Corrective Actions are too diverse for an average to be significant” camp, although that said, it doesn’t stop some of my customers placing a hard 30 day deadline on “closing out” an
8D regardless of its complexity. These are the same customers who throw away the packaging and traceability labels the minute the product comes through their door, that would have really aided the process in identifying the root cause. But what would I want to know what machine, shift and operator(s) made the component and what batch of material it was made out of anyway? I am just using convenient excuses to delay the 8D process (their words not mine

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It’s maddening, but I don’t get this with my non-automotive customers, and I often wonder how they achieved and maintain IATF without maintaining traceability of their incoming components.