To calculate Cp, Cpk I must know Pp, Ppk. Auditor says: Processes capability for some characteristics has been approved (Pp, Ppk>1,67) despite the fact that graphical analysis shows that the process is not under control (out of control limits). I don't understood why this is nonconformity? Pp, Ppk analisis contain special causes.. What shall I do to auditor satisfaction? I know special causes and I know, they will be always in my process (screwing operation- torque moment)--> it is impossible to move special cases from my process (different components delivery)..