At US$2.6 mill starting price for the Tecnam and only nine punters down the back to pay the bills, it could be hard to make a dollar with the Tecnam in PNG.
Even with much lower new aircraft prices in the late 1960s/early 1970s, new aircraft were rare in PNG. Of the dozens of BN2 Islanders in PNG I think Douglas Airways only ever bought two new aircraft and Talair, who at one time operated 23 Islanders also only bought two new aircraft.
Could get a good DHC6-300 Twin Otter with good engine hours for the same dollars.