@topgun_29:
well, I have a friend overthere that has seen with her own eyes how they fired a girl with an 80% in one exam while the company was asking a 84%. By the other hand, I don't know how difficult are the exams. Probably that girl was a bit short minded LOL.
When I had exams in my former airline company, to pass every exams you needed at least 84%, and for some exams it was 95% (security and emergency procedures, emergency equipement)....