Without indeed going in detail about the job possibilities.
The interview is with someone from HR and one pilot. Just the regular HR questions, like why you want to work with JAF, about your history, education, personality,... Also one question is in French or Dutch, which is no problem at all if you're at least able to express yourself properly in French (or Dutch if you're French).
Then some technical questions from the pilot. Can be basic questions but also quite in depth questions, really depends on the pilot itself, so difficult to help you with that.