Production Part Approval Process


Production Part Approval Process (“PPAP“) is the industry standard that ensures engineering design and specification requirements are met. The purpose of PPAP is to verify whether the supplier’s manufacturing process is capable of consistently producing product meeting all product engineering design and specifications, and demonstrate the developed packaging eliminates damage during transportation, handling, and storage.


All documents must be submitted in HPDI Technology accepted format. Download the Supplier PPAP Workbook for a detailed explanation.


Templates have been included for your use. These are AIAG (Automotive Industry Action Group) standard templates. Manuals relating to these activities are available through AIAG website at If your organization uses non AIAG standard templates for these activities, please forward a blank copy to HPDI Technology for approval prior to proceeding with PPAP activities.


The checklist indicates the elements required by HPDI Technology for the Production Part Approval Process.

The submission level pertains to only what must be submitted. All of the elements must be completed by the supplier unless otherwise waived by HPDI Technology Supplier Development Engineer in written.

  • S = submit to the customer
  • R= Retain at the manufacturing location and make available to the customer if requested
  • * = Retain at the manufacturing location and submit to the customer if requested


The Part Submission Warrant is required for each submission and must be completed and forwarded with PPAP package.