DCA
Yes. and when the Aussie ran the show, we had hundreds of aircraft to pay fees, airways, landing, navigation, registration, licencing, for salaries, airport upkeep and the myriad other costs involved. How many aircraft are currently registered in PNG 60+. and how can such a number pay for the overheads, let alone SAR etc without increasing fees?
Maybe fit satellite tracking transponders to aircraft for position updates, have a central traffic advisory control system, there are ways of improving the system, reduce DCA staff to bare minimum, but then again you get social implications.
Ah life in paradise.