notmy150/obie
NMC150: APNG home page states that both pilots have some 5 years experience on DHC6 aircraft, so I'd guess they had accumulated around 3,000 hours on type. Not an inconsiderable amount in such a hostile environment.
Not too sure about Obie though, apart from suggesting that he take a trip to Port Moresby and fly as pax on a few Goilala trips, as well as to/from Kokoda via the Kokoda Gap. He then may have a better appreciation of what PNG flying is all about.
I back-up Chimbu Chuckles comments as after 37 years in the country operating various aircraft from C206/185/402/336/B55/P166B/PA31/SC7 and DC3 over the hills and into Kokoda, I have a suble appreciation of what PNG ops are all about.
RIP.