Para 377, CASA have no capability whatsoever to "regulate" Qantas and never have had since at least since 1976. They couldn't regulate Ansett either, my first task on joining that airline was to answer the CASA question: "can you build a system that produces reports for us showing how safe you are?".
Little Sunfish dutifully concocted a system that tracked defects by ATA chapter, by fleet and by port. We calculated confidence limits from standard deviations and automatically produced a monthly printout which was dutifully sent to CAA(?)
Never heard from them again....