Read all about it.
If you read Bill Hamilton's sbmission to the senate inquiry into casa you will see why these things are allowed to happen, and the structural problem which exists, and allows casa to do virtually anything they like. If left unchecked we could see an "authority" that is not answerable to the parliament or the courts, or anyone else.
Read ALL of it, and think about it. Bill is a retired Qantas 747 captain who has about 50 years experience in aviation.