If someone bust they get two extra sims and a second try at the PC
After that it's up to the company whether to continue training or fire them.
There was no 100% fail. Some classes are better than others but the average pass rate is around 80-85%
Talking to some of the sim guys it seems some of the already typed guys seem "entitled" and arent taking training as seriously and haven't studied or worked as hard as others.