Just so everyone understands the why behind this...
It first was brought up because we a currently trying to move as close to paperless on the shop floor as possible. Without making things too complicated I had set up excel spreadsheets for the operators to log all of our "logsheet" information on the control plan, and we use an Electronic SPC system called WinSPC to do all of our SPC data collection.
The question was asked of me why we do not simply enter ALL variable information into WinSPC instead of having the two seperate systems.
Running this past our Quality manager, she said that if we were to chart ALL of our variable data that we collect we would have to mark everything as a CC on our control plans, prints,
FMEA's and be held to maintaining the capability on every characteristic.
When I read our quality manual I interpreted a CC as a characteristic that has been deemed by US as significant and is tracked with SPC.
so in other words you may or may not track something using a chart..but if the item is a CC on the print/control plan etc then you MUST track it with SPC there are no other options.