Where did Ben get his information about the aircraft flying past Canberra at 8000ft on one engine?
As far as I know the aircraft was at F170 until well past Goulburn and then started a normal descent at about 60nm sydney. Usual TOD from that level..
There's been no indication that trouble was encountered until shortly before the prop came off (which happened at around glenfield). This means the only 'closer' AD would have been YSBK... but the aircraft would of needed 25 miles of vectoring on one engine to get down on an unfamiliar approach through the Bankstown training zone.
Nice one crikey.