From an HS125 to a Cessna 185, I don't think there is much DCA/CAA/CASA haven't pranged over the years. The fact CASA no longer have a Flying Unit, is probably a large plus for Australian air safety.
Ain't that the truth!!
In (I think) 1966, DCA accounted for over 50% of the accidents that year, with credit for about 100% of the major accidents. As well as the DH 125 there was the NSW C-310 on its guts for the second time, a Musketeer wrecked on takeoff at YSBK (very interesting story), an F-27 dead stick'd into Mudgee ( shut down the wrong engine), and at least several more, the details of which do not immediately come to mind.
Remembering ( Wot!! No checklist??) to extend the gear seemed to be a major DCA problem, Dove at Camden, DH 125 Avalon, C-310 Lismore ( in front of an airshow crowd) and ?, G-1000 twice in WA. AC 560E, NT? Most of us from that time will remember Bill Lord flying into a glider cable with the NSW Region Bonanza.
Interestingly, the G-1000 above is still flying in US, the current owner was most interested to learn the "history" of the aircraft.
Tootle pip!!