Mach E Avelli surely the crew on board know more about what happened then the guy from PNGCASA?
The PNGCASA guy could have cleaned a lot of stuff up but like most itinerants to PNG (and there has been many) all that seems to happen is charge on in mess with a heap of stuff and leave the place worse then he found it...
Alot of lessons have been learnt from the incidents and accidents the difference is it is the industry that must uphold the standards as PNGCASA will never in force anything.
MAF, Hevilift, SouthWest are all no different to APNG from what I have seen.