PPAP requirements: Submission date and PSW (Statistical Process Package)

[Yuri Pangco]

Hello everyone,

First timer here... pls be gentle.

2 "elementary" questions I need your help with:

1. Is there a defined timeframe (# of days/weeks) for the submission of PPAPs to the customers?
I've been trying to look through the PPAP manual but I can't find this.
Right now, our cycle time's set at 2 weeks, but I'm not sure if this is supported by any automotive documents (i.e., PPAP manual, TS 16949, etc.).

2. On the PSW's submission results, what does the "Statistical Process Package" mean? When should this be checked?

Many thanks for your help!
Yuri

 

[Manix]

HI Yuri,

1. I do not know of any set time frame for the PPAP to be submitted within. I would have thought that this is totally customer dependant. Also you need to think about all the phases that go into developing all the information required for a PPAP submission.

Some phases take longer than others and are totally dependant upon what product you are manufacturing.

It may also be dependant upon what level of PPAP you are required to submit.

Sorry not much help, I would dicuss with your customer!

2. 'Statistical process package' is a package of your statistical analysis of your process. Are you conducting SPC studies on your products? You would tick this box if you were including with your submission, SPC data from a production run. So Histograms, Control Charts (that are in use on your line), statistical data (including capability indexes short & long term if avail). If you do not submit this with your parts then, you can't tick this box.

Hope this is a little help but I am sure others will provide further info.

 

[Bill Ryan - 2007]

Welcome to the Cove, Yuri

Manix is correct in that the customer tells you when PPAP is due on a new launch or, sometimes, on an engineering change they want in place (and probably some other instances). Most of the other "types" of submissions (additional/replacement tooling, processing change, supplier change, etc.) are pretty much dependant on when your company is ready to submit. I guess I'm saying that if it's a "customer directed" change they will tell you when submission is due and if it's "your organization directed" you decide when to submit.

Measurement System Analysis studies are also part of the "Statistical Process Package" and it needs to be checked if they are part of the submission.

 

[Howard Atkins]

Welcome to the cove

When you talk about timetable do you mean the time between the production run and the submission?
If so a week to two is probable OK depending on the complexity. You should have every thing ready except for the dimensional and performance report.

 

[Ron Rompen]

Our company guideline is (generally) 2 full working days AFTER receipt of finished parts, to complete the PPAP submission. This may be extended in cases of extreme complexity, outsourced measurements, significant numbers of capability studies, etc.

One of the biggest delays I've run into lately, however, has been with supplier PPAP's. Although none of my customers 'require' supplier PPAP's be included with my PPAP submission, they all seem to expect it, and question if it is not there.

In general, it is pretty easy to have the majority of the PPAP completed long before finished parts hit the dock. All the documentation (Control Plan, PFMEA, Process Flow, MSA, etc) can be prepared and printed out beforehand. When the 'big day' comes, you should only need to complete and print out a few pages.

Planning makes all the difference.......those who fail to plan usually plan to fail.

 

[sunwen]

We are follow customer's requirement

First of all,we have a timetalbe for APQP which include the time of PPAP finished,

 

[Manix]

Fantastic quote Ron, that just about sums up the PPAP process.

One key thing to mention, is that we now use a standard APQP timtable that consists of 5 gates. Dependant upon how complex each stage is will depend upon when completion of the PPAP will be. Please see the stages we use below:

GATE 1 - Planning and Definition - Define what the project is all about. Is the project feasible and when is the customer expecting things to be done by?

GATE 2 - Product Design and Development - Hold Design reviews conduct Failure mode analysis etc

GATE 3 - Process Design and Development

GATE 4 - Product and Process Verification - PPAP will usually be submitted when all elements of this stage are complete.

GATE 5 - Production & Continous Improvement Longer term capability studies, continual analysis of conformance etc........

Hope this helps people out. I am open to any comments suggestions etc....