Before a single production part ships in volume, the customer wants proof. Not a promise that the supplier can make the part, but evidence that the process will make it right, every time, at rate. PPAP is how that proof is packaged and signed off. It is the moment an automotive part goes from approved-on-paper to approved-for-production.
The Production Part Approval Process is a standardised way for a supplier to demonstrate to its customer that it understands the requirements and that its process can consistently produce conforming parts. It is governed by the AIAG PPAP manual, and it is the formal gate a new or changed part must pass before the customer authorises production. PPAP is the output of the validation phase of Advanced Product Quality Planning, the point where all the earlier planning is evidenced in one submission.
A full PPAP is a package of up to 18 elements, evidence drawn from the whole development process rather than paperwork created at the end. In practice they group into a few themes:
The Part Submission Warrant (PSW) is the single summary document the supplier signs, declaring that the submission is complete and the parts conform.
The customer decides how much of that evidence it wants to see. The AIAG defines five submission levels: Level 1 is the warrant only; Level 2 is the warrant with samples and limited supporting data; Level 3, the most common default, is the warrant with samples and the complete set of supporting data; Level 4 is whatever the customer specifies; and Level 5 is the full package reviewed at the supplier's own site. Same evidence generated behind the scenes, different amounts submitted.
PPAP is not a one-time event at launch. It is triggered again by an engineering change, a change of tooling or process, a new manufacturing source, a material change, or a significant production interruption. Assuming an approved part stays approved after the process behind it has changed is one of the more expensive misunderstandings in automotive supply.
Production Part Approval Process. It is the standardised process, defined by the AIAG, for a supplier to prove to its customer that its process can consistently produce conforming parts before volume production begins.
There are five. Level 3, the warrant plus samples plus complete supporting data, is the most common default. The others range from the warrant alone (Level 1) to a full review at the supplier's site (Level 5). The customer specifies which applies.
PPAP is the output of APQP's validation phase. APQP is the whole framework for developing the part and its process; PPAP is the evidence package, produced within that framework, that the customer uses to approve production.
PPAP is a package of up to 18 interlocking elements and five submission levels, which is exactly the kind of detail that gets lost in a slide deck and surfaces as a returned submission months later. It trains better as short, accurate video a supplier's team can return to element by element. The IATF 16949 channel REAS built and runs for the International Automotive Oversight Bureau does this at scale, grown to 12,000+ subscribers on a BSI ISO 9001 certified production process (FS 763439).
Read the five Core Tools explained and what IATF 16949 is. See how REAS approaches video production for standards and certification bodies, or book a strategy call.
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