PPAP Requirements for Sub-Assemblies

[PPAP Newbie]

Hello All-

As the name suggests, I am new to the PPAP world. We have a Tier 1 customer requesting a Level 3 PPAP on an assembly we have quoted. This assembly consists of components we purchase, as well as components we manufacture in house.

Obviously the assembly needs full documentation, but what about the subcomponents? Do each of them need a Level 3 PPAP as well?

Thank you,

Newbie.

[JLang]

From my understanding (which is very limited, I am new to this as well), I believe that they do. My company does fastener distribution to assembly companies and we are often requried to submit level three PPAPs for our customers to use in their assembly PPAPs.

Like I said, I'm new to all of this, so don't take my word as solid gold, but that is the understanding that I have of assembly PPAPs.

[jenboy]

As a general rule, I require level 3 submissions from my suppliers. This will ensure requirements are met for the components by the time our PPAP submission happens. Internally produced parts do not necessarily need "PPAP" approval, but you will need to ensure you have the documentation to support blue print requirements, including IMDS submissions and any material / test results for that part.

Probably your first bet would be to check your OEM Customer Specifics and speak to your OEM's SQE, what are the customer's expectations for PPAP submission regarding sub-supplier parts? Some OEM's require a PSW for all parts and materials listed on the control plan, most that I've dealt with require the material certs/test results and lab accreditations with my package.

Good luck!

[Marc]

Assuming this is automotive, typically there are flow down requirements for PPAP. The company making the final assembly typically has a PPAP warrant (thought the level(s) may differ) for every part from every supplier. Theoretically each auto maker would have a copy of the PPAP for every part/assembly in the vehicle.

I'm no longer active and up to date on TS 16949 / automotive requirements (I'm retired) so I can't say how far down PPAP requirements must be flowed. I'm sure one of the folks here who are up to date on TS 16949 / automotive can shed some light on that aspect.

[vardar3]

I would say they don’t all require a level 3 PPAP. Remember that the levels are referring to what is submitted and what is retained. All the requirements of PPAP are supposed to be done regardless of the level. So if you had some level 4 PPAPs for subassemblies your company manufactures, you could just have dimensionals and a PSW, but you would want to make sure that the FMEA, Control Plan, MSA, Master Sample etc. were all updated along with the print change.

I also think that is the sub-assembly has a part number; it should be PPAP’d. The customer could go down the BOM and check off what warrants are approved/missing.

[seeva]

No PPAP from sub assy, the PPAP is from the manufacturer , in the PPAP you may list the BOM used for the manufacturing of the parts that you supply to the Tier 1. PPAP records can have the part nbrs used for the assembly of the component you supply.

[Qualgal]

I work in automotive and submit many PPAP's. I always request level 3 PPAP from our component suppliers. The items that we produce in our process are addressed in the Control Plan, Flow Diagram, & PFMEA as they are part of the process.