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Insights on statistical process control, quality engineering, and data-driven manufacturing

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PPAP Submissions: Capability Evidence That Survives Customer Audits

Your PPAP got rejected — not for bad parts, but for bad statistics. OEM auditors now scrutinize whether your Cpk method matches your data. Build a PPAP capability evidence chain that withstands the toughest audits.

ppap apqp process-capability measurement-system-analysis quality-standards

Mar 14, 2026·Alex Dyba

IATF 16949 Doesn’t Mandate Normality — So Why Does Your Software?

IATF 16949 requires “appropriate statistical methods” — not normal-based Cpk. For the 60–80% of datasets that fail normality tests, the standard actually supports distribution-free methods like entropy-based analysis.

iatf-16949 ppap apqp quality-standards process-capability

Mar 4, 2026·Alex Dyba