My money is on Tapini as it fits to where the RAAF parked a Caribou.
The Caribou carcass was still there around ‘08-9 when I last went to Taipini.
RAAF have parked a few aircraft in PNG mainly Otters and Caribou’s. Once witnessed a Herc parked for a week unable to depart Tabubil due weather (other operators came and went during this time).
PNGDF consists of 1 x PAC750 these days.