IATF Requirement for identification of special characteristics

[switchback_GT]

Good day everyone,

I was hoping to get some clarification on an IATF requirement regarding special characteristics. The standard dictates that any SC must be identified from the top down and identified on all appropriate documentation. I've come across a scenario where we have a CC identified on the DFMEA for a purchased component, but our final assembly 2D drawing does not state anywhere that any sub-component has a CC on it is a pass-through characteristic, so we do not monitor or check the feature, it is completely supplier controlled. The suppliers drawing has it indicated as a CC and they are appropriately marking their control plan PFMEA, etc.

Is it legal for the top-level drawing to not have any notation at all that there are CC's associated with it, and only identified on the sub-component level drawings?

 

[anneliesehuss]

For your company, it is ok that that feature is not identified as a special characteristic in your drawing, however it is a requirement that you monitor your suppliers and ensure they are doing their due diligence to ensure they are maintaining the CPK requirement on that critical characteristic with your supplier audits. if that were to fail at the customer while the root cause might be on the supplier, YOUR COMPANY would have to respond to the complaint from the customer.

 

[Ashland78]

Exactly what Anne.. said, but look to that customer specific requirements that is what you shall follow. IATF gives starting points but the customer is the decision maker. I believe if you were supplying to GM, they have a worldwide standard GMW15049 that explains. There may be another too...