AIAG PPAP requirement on Cpk

C

cheahga

#1
Hi Cover Experts,

I was told by my ex-collegues that our CB required us to follow Cpk > 1.67 for all of our process per AIAG PPAP as per our CB we are require to follow PPAP per the CSR, is this statement valid?

We were given NC on this during the last TS surveillance audit as our current Cpk was put as minimum 1.5 per plant goal.

Searching through our CSR, there's no single customer put in the requirement Cpk >1.67 and we are only required to follow AIAG PPAP.

Please advise.......:frust:

thanks in advance
 
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Howard Atkins

Forum Administrator
Staff member
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#2
The CB cannot as I understand it require any capability level not required by the customer.
See 8.2.3.1 " The organization shall maintain processing capability as specified by the customer"
Some customers do not require AIAG PPAP for example VW! Then what?
 

antoine.dias

Quite Involved in Discussions
#3
PPAP - Cpk

If you have to follow the PPAP, the requirements are as follows for the moment:

1) Preliminary process capability index > 1.67

2) Process capability index > 1.33

I do not know if this is going to change when the new PPAP version is released in Q1 of 2006.

Best regards,

Antoine
 
B

Bill Ryan - 2007

#4
Your CB is probably looking at I.2.2.9.3 which lists the Acceptance Criteria For Initial Study and does sound rather straightforward in stating that you must contact your customer if the process capability study is between 1.33 and 1.67 Cpk. (I've not had an auditor pull this one yet). It also states that your "bogey" of 1.50 is "acceptable, but may require some improvement". Perhaps some of our residing auditors and consultants will chime in for you.
 
Last edited by a moderator:
C

cheahga

#5
Bill Ryan said:
Your CB is probably looking at I.2.2.9.3 which lists the Acceptance Criteria For Initial Study and does sound rather straightforward in stating that you must contact your customer if the process capability study is between 1.33 and 1.67 Cpk. (I've not had an
auditor pull this one yet). It also states that your "bogey" of 1.50 is "acceptable, but may require some improvement". Perhaps some of our residing auditors and consultants will chime in for you.

Hi All,

Thanks for all the reply.:agree1:

Our CB is asking us to maintain the Preliminary process capability index > 1.67
as our process goal for the special characteristic identified by the plant, and we was issued NC.

Anyway, the ex-MR which left the company agreed with the NC and we are stuck with it.....

Again....thanks for the clarification....
 
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