Calling on CASA to actually DO THEIR JOB is something that should have been done in this country years ago.
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I have read ALL the reports of all the investigations in regard to this operator.
Believe it or not, the CASA audits prior to the crash were extensive with four inspectors assigned to the audit immediately prior to the accident. En-route surveillance was conducted on EVERY RPT sector operated by Transair in Qld (including Bamaga and Lockhart River) and its NSW offshoot, Big Skies.
No amount of surveillance, however, would have prevented the accident as described in the ATSB report - the (deliberate) unstable approach.
What did emerge after the crash was the fact that the accident PIC had testified at a previous coronial that a "shooting hole approach" was necessary in order to get visual in certain circumstances. The fact that the PIC of an RPT operation admitted such practices should have been a very large concern for all who were aware of such an admission. Warning bells should have been activated. It has been suggested that a government agency (not CASA) was present at that coronial and did not pass on the intelligence.
Failure to forward such intelligence, if true, is every bit a threat to aviation safety as conducting the actual "shooting hole approach."