How do you handle the situation where you have parts, designed, tooled and run for years prior to today's standards? We have several old parts, started up prior to QS, PPAP, AIAG and all the fancy measuring equipment we have these days. Now we are being asked to PPAP these parts and by today's standards we don't have a prayer.
For example, tooling built back in the day and the part was checked on an old style optical comparator. Picture some old guy, behind the curtain, eyeballing the part, saying good/bad. Today, the part is checked on a super fancy automated 3D computerized electron machine (which cost more than the original tooling did). Of course, the numbers don't quite match and the part is "no good."
Then there are the old gages, calipers and what not that can't "pass" an MSA. They seemed ok for years, but by todays standards, no go.
It just seems like a big can of worms to me.
For example, tooling built back in the day and the part was checked on an old style optical comparator. Picture some old guy, behind the curtain, eyeballing the part, saying good/bad. Today, the part is checked on a super fancy automated 3D computerized electron machine (which cost more than the original tooling did). Of course, the numbers don't quite match and the part is "no good."
Then there are the old gages, calipers and what not that can't "pass" an MSA. They seemed ok for years, but by todays standards, no go.
It just seems like a big can of worms to me.