Thursday 13 December 2018

PPAP | Production Part approval process

A Production Part Approval Process (PPAP) is a valuable tool for establishing confidence in component suppliers and their production processes. It is a standardized process in the automotive and aerospace industries that helps manufacturers and suppliers communicate and approve production designs and processes before, during, and after manufacture.

Today we will deal with the study of the second tool of the Core Tools as already explained in a previous post, composed of five in total.

The PPAP or for production parts approval process, which may have higher incidence in all kinds of suppliers and we will see the 18 elements of which it consists.

The PPAP or parts approval process for production

PPAP Production Part Approval Process neutrally for production parts approval process. It is one of the tools also know as Core Tools. Even and is use in the chain of supply to establish trust of suppliers production processes and components mainly in the automotive sector.

Although many companies have their own specific requirements. The AIAG has developed a common standard PPAP as part of the advanced planning of the better know as APQP product quality. This encourages the use of forms and standard terminology for the documentation of the projects.

The PPAP process is designed to demonstrate that the supplier of components has develop. Its process of design and production to meet the needs of the client, minimizing the risk of non-compliance by an effective use of APQP.

The 18 elements of the PPAP are the following:

Design records:

A copy of the drawing. If the client is responsible for this design is a copy of the drawing of the customer. That ship with the order (PO). If the supplier is responsible for the design.  It is a drawing publish in the release of the supplier system.

Engineering change authorization:

A document that displays the detailed description of the change. In general, this document is call "Engineering change notification"

Approval of Engineering: this approval is usually the trial of engineering with production parts performed at customer's plant.


A copy of the DFMEA analysis and failure mode of design, review and sign by the supplier and the customer.

Process flow diagram:

A copy of the process flow, indicating all the steps and sequence in the manufacturing process, including incoming components.



A copy of the FMEA analysis and failure of production mode, review and sign by the supplier and the customer. The PFMEA follows the steps of process flow, and indicate "what could go wrong" during the manufacture and Assembly of each component.

Control Plan:

A copy of the Control Plan, reviewed and signed by the supplier and the customer. The Control Plan follows the PFMEA steps, and provides more details about how the "potential problems" are verify in the Assembly process of quality input, or inspection of finished products.

Measuring analysis system (MSA):

It usually contains the firm R & R of critical features, and a confirmation that the indicators used to measure these characteristics are calibrated.

Dimensional results: a list of all the dimensions in the drawing. This list shows product feature, specification, the measurement results and the evaluation of the sample if this dimension is "right" or "wrong".

Records of materials / tests:

A summary of each test performed on the side. This summary is usually found in the form of DVP & R (Design Verification Plan and Report), which lists each individual test, when it took place, specification, outcomes and evaluation of fitness / failure. If there is an engineering specification, usually seen in printing.

Initials of process studies: In general, this section shows all the graphics statistical control of processes that affect the most important features of the product.

The Laboratory certificate documentation:

Copy of all the certifications of the laboratory where the testing reported in section 10.

Appearance approval report:

A copy of the AAI (approval of the inspection of appearance), signed by the client. Applicable for components affecting appearance only.

Parts sample: Sample of the initial production lot.


A sample sign by the client and the supplier, which is usually used to train operators of inspections.

Supports verification:

When there are special tools to verify the parts, this section shows a picture of the tool and calibration records, including dimensional report of the tool.

Specific requirements of the customer:

Every customer may have specific requirements that are included in the PPAP package.

As shown in above all requirements have met them in the previous chapters so that we would be prepared for the PPAP submission and in ended the approval for the production of the product.

Warranty the part (PSW).

This is the document that summarizes the entire PPAP package. This form shows the reason for submission (change of design, annual revalidation, etc. The level of documents present to the customer. If there is any deviation provider must be note in the PSW or inform. That the PPAP may not be submit.

The PSW is also a document with legal and contractual validity so that non-compliance with the data in this can generate very severe legal issues. This is most representative when the component. Which is intend to release through the PPAP is a part of security. This document must therefore contain truthful documentation.

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