This is interesting, not least because there were at least 3 instances of survivors contacting/radioing for help after their plane went down. Meaning that they went down on land, supposedly north of Darwin, and in the over 80 years since no trace has been found of them or their plane.
Link: https://en.wikipedia.org/wiki/1945_RAAF_Douglas_C-47_disappearance
I find it fascinating that this can still be unsolved. It has some parallels to the case of Canada's missing Douglas C-54; which disappeared enroute Anchorage to Great Falls, and there were suggestions of broadcasts from the downed plane afterwards. The Australian Plane seems definitely likely to have landed (3 broadcasts) - and the fate of the crew & passengers is curious indeed.
Link: https://rodboyle.com/index.php/archives/blog/ideas-a-questions/missing-1950-douglas-c-54d
Note: I used to be interested in tales of people who went missing - just vanished - until I realized that there was often a mundane explanation that authorities couldn't share with the public. The possibility of murder, probability even, only they didn't want to implicate the suspected boyfriend/spouse/ex or family members, or the possibility of suicide (probability) in cases where the vanished went off for a walk in the woods, or the ease with which it is to get lost in unforgiving wilderness terrain, and most peoples basic unpreparedness for wilderness survival, most missing persons cases do not bear any close scrutiny. Even MH 370 - the missing Malaysian Airlines flight, bore no scrutiny when you learned a very little of the pilots background. But these, the cases where the planes may have landed intact and where still no clue has been found - well, until they're found they're still baffling.