Eventually, students in either Denmark or Belgium, (I forget which,) sorted the issue by obtaining the entire question bank under their national 'freedom of information' legislation and made it freely available to all. That was the end of JAA's attempts to keep the questions secret.
Just before the JAA folded, the CQB had been given to a new State that had achieved JAA compliance. The man at the National Authority to whom the CQB was given, left the Authority and the CD disappeared with him. I suspect that was the source rather than any freedom of information request.