I thought that there were specific "critical" operations that would require them (Delta, Boeing, or both) to record an entry in Boeing's Collaborative Manufacturing Execution Systems (CMES) database. But I'm discovering this field, so I don't know if they make a difference in this context between before and after delivery, and if the normal plane maintenance is covered by the same processes or not, and that's why I'm asking, and not stating.
However, if one doesn't know more than me, stating isn't more correct.