Agree with AJ. 60-70% sounds about right. There are a lot of people who might fail a course and get recoursed, or even a mini recourse where they go back to the start of that phase/section and do it again, running a few weeks behind the original course. eg on the last aerodrome course of 10 folks, 5 completed without fail, 2 a few weeks later after a mini recourse at some point, then 3 did not complete. I would guesstimate that 40-50% of students go through college without failing something at some point, when the bad pass rates get waved about it is more towards this. The main thing about all the courses is that there are many hurdles to jump over, there's the written tests, sim exams (aka summatives) then oral boards, but they are all passable! The approach course which finished in January had 7 out of 7 pass! Just go there, enjoy, but work at it.
