Most Supplier 8Ds Fail at Step 3. Here's Why.
- Danielle Dollar
- 1 day ago
- 1 min read
A quality alert. A sorting station. A bin for non-conforming parts. That's what most supplier 8D containment actions look like. And most of them have a critical gap.
The Gap Nobody's Catching
What about the WIP already in transit?
An 8D can check every box on containment and still be fundamentally incomplete if it doesn't address material already in the supply chain — the parts that shipped before the defect was identified, the inventory sitting at a cross-dock, the lot that cleared inspection before the problem was found.
What AIAG Step 3 Actually Requires
Step 3 of the AIAG 8D standard addresses containment actions — not just at the facility, but throughout the supply chain. WIP in transit. Material at cross-docks. Product already shipped to the customer. A containment plan that only addresses the line misses everything that's already out the door.
This gap is one of the most common root causes of repeat escapes and warranty returns. The 8D looked complete. The SQE approved it. The same defect shipped again from a lot that was never addressed.
MAD-Ai Grades Against the Standard, Not the Form
MAD-Ai grades supplier 8Ds against AIAG standards and your specific foundational documents — flagging missing WIP traceability, incomplete transit containment, and containment that addresses the line but not the field.
The Result: fewer bad 8Ds get accepted. Fewer re-occurrences. Fewer customer escapes. 29x faster supplier quality management. Your SQEs focus on resolution — not proofreading.
See MAD-Ai's supplier quality workflow → mad-ai.com/solutions
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