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wslabey
Where's it mandated to use a 300 piece run for a capability study? I have been going through the AIAG books and cannot find the reference?
wslabey said:Thanks, but where is it stated in the PPAP manual? My eyes have glazed over trying to find the "shall" or direct reference.
JSW05 said:Sorry, but at the moment I don't have a manual handy. Look for "Significant Production Run" and "Initial Process Study" in the first 7 or 8 pages of the manual.
Howard Atkins said:There are in fact 2 separate requirements
First a significant production run which is defined on page 2 as "shall be from one to eight hours of production ....a minimum of 300 consecutive(emphasis is original) parts.
Second page 6 at least 100 readings
The only connection between the 2 numbers is in Note 4 to I.2.2.9 where the 100 pieces for the capability study are from the "significant production run"
wslabey said:Howard,
Thanks. It was just TOO obvious to find on page 1. Often I find the AIAG manuals are a bit opaque and feel more like I am reading the federal register. I am dealing with low volume production parts for automotive aftermarket accessories sold to the OEM and 300 piece runs pretty much equal annual production volumes so we're going to revert to 30 piece initial studies using XmR charts to plot Ppk.
wslabey said:Howard,
Thanks. It was just TOO obvious to find on page 1. Often I find the AIAG manuals are a bit opaque and feel more like I am reading the federal register. I am dealing with low volume production parts for automotive aftermarket accessories sold to the OEM and 300 piece runs pretty much equal annual production volumes so we're going to revert to 30 piece initial studies using XmR charts to plot Ppk.