[defrost]

> you could also be operating it out of a 400m sloping grass strip with a mountain off one end.

Why? Not as a regular thing I hope, that's about 90m short of "tight".

If you're intent on proselytizing PNG at least get a PAC STOL ( https://en.wikipedia.org/wiki/PAC_P-750_XSTOL )

[VBprogrammer]

Not if the Cessna is a King Katmai 182...that would have room to spare.

[defrost]

Interesting, I didn't know that Cessna had a STOL conversion kit, nor that people I know locally (second hand) had done a few - they still look under performant compared to the PAC STOL family and have to wonder if they can handle short strips at high altitudes in thin air fully loaded.

PAC STOL's were driven by demands for work horse grunt power at NZ / PNG altitudes. (eg: https://www.youtube.com/watch?v=1_MO5Wfomks )