This thread doesn't seem to have ever listed or discussed the ATSB report into this accident, which was completed in December 2011. I can't post a web link directly on the forum, but that accident investigation was A0-2010-076 and related to the Collision with terrain of Eurocopter AS350B VH-ROU 67km west of Sydney Airport on 10 October 2010 (as opposed to 9 October 2010 heading used to start this thread by WG99).
https://www.atsb.gov.au/publications...r/ao-2010-076/
As I am not a pilot, let alone a helicopter pilot, I should probably remain quiet other than to encourage line pilots read this report.