What is PPAP, and why does it eat so much time?
PPAP, the Production Part Approval Process, is how a supplier proves to a customer that its process makes a part to specification, at volume, every time. A full AIAG submission has 18 elements, including design records, the process FMEA, MSA, capability studies and the Part Submission Warrant.
The work isn't the hard part. Finding it is. Evidence sits in shared drives, email threads and five versions of the same spreadsheet. When a drawing changes or a supplier moves a line, someone rebuilds the whole package by hand, and nobody can say for sure which revision the customer actually approved.