#13. Initial Process Capability Studies

Has supplier submitted Initial Process Study for all Customer Interface, MPT Interface Characteristics (e.g., critical, key, significant, pass-through, etc.) that are called out on the Drawing, Control Plan, or requested by MPT?

Are submitted studies representative of each unique production process, e.g. duplicate assembly line and/or work cell, each position of a multiple cavity die, mold, tool, or pattern, etc?

Is capability/performance data submitted from significant production PPAP run (i.e. Production Trial Run or Run-at-rate)?

Is process capability study submitted (In case of multiple production streams, supplier to submit study for at least 30 samples from each unique production stream)? When not enough data are available, a suitable plan between the supplier and corporate representative must be agreed upon.

Has supplier provided capability/performance plots/charts (Preferable Six Pack analysis from Minitab or similar)?

Has the supplier included the raw data for the process capability data?

Has the supplier included the feature name, part name, and gauging method/gauge detail?

Has supplier provided a corrective action plan including 100% inspection if process study results are not meeting requirements?

Capability results for normal distribution and stable processes must meet criteria stated on the SRM-001_Quality Management Requirements of Magna VR 004e version 9, available on PLEXUS or QDB online.