Investigation ... who does it?
Frankly, not sure.
As I understand it, by-and-large France conducted both the search, located the aircraft and conducted the investigation for AF447.
My apologies to Brazil and others involved, but France was the ring-master.
In addition to which it was their airline and their aircraft though the other nations involved had an acute interest in the processes and outcomes.
But what part of that gave them the "responsibility or right" to conduct the investigation? That's my point.
So my question is (or was), if Australia has responsibility for SAR, does it also have any responsibility for recovery?
Or does it actually fall 100% to Malaysia under international codes?
And, if so, are all concerned parties signatories to those codes and would they be happy about that prospect?