AES, from your most recent post, it seems like you may believe the Pacific Aerospace 750XL is built in Australia. It is actually built in New Zealand. Wikipedia gives a good overview of the type and its evolution as DIBO already briefly outlined:
https://en.wikipedia.org/wiki/PAC_P-750_XSTOL
Wikipedia also has a separate page covering the manufacturer, which I see has changed more recently:
https://en.wikipedia.org/wiki/Pacific_Aerospace
The aircraft description on a page from the new company is at:
https://www.aerospace.co.nz/aircraft/750xl
All the best with trying to better understand the circumstances of this sad accident.