Well then here's a suggestion... How about coming up with a simplified enough wall chart which the employees can use as a reference point to determine how to distinguish the differences between an FC and Non-FC component after some concise training prior to hanging up the reference chart in the shop???
I know it's not that simple to do but, it will pay for itself in preventing any future mistakes on such components due to the employee not being trained enough to be capable of distinguishing the differences between the two different types of components and that in itself increases quality control as well as quality assurance overall. ;)
I think it's something to consider at the very least, and if the training curriculum is thought out intelligently, and designed where the employee can comprehend relatively easily the purpose of the training then the overall costs for implementing the training as well as the implementation of the reference charts in the shop should be acceptable as long as proper communication is used in explaining the reasoning of this sort of training to both the bean counters as well as the employees also! ;)
Respectfully,
Henry