Pee Pan
I do understand your point. Due to this problem was caught out at QA gate, and problem was occurred at drop in process as for example, not inspection. I think some of sub-sequence lot from drop in was supposed to take an action. Base on the current OCAP flow, I understand recall for inspection only problem lot.
1. For problem lot which was detected issue, supposed to do 100% inspection for sure.
2. How is about the lot which process before and after problem lots from problem process
3. Possible that lot may or may not go to QA gate. Or else only one lot in production.
4. If the lot which still produce and was detect the problem. Yes, it will have had only previous lot, no future lot at all. However, still be possible that when lot that detect, there might have new lot finished which depended how fast of the process is.
5. What and how to record the result after inspection. I do believe that camstar supposed to have some feature to record.
6. I try to drawing some of flow for recall lot.