WW I once heard a mayday call from a chopper it was about '73 ?
Just that, a mayday mayday then nothing else.Turned out it was a chopper and he was ok.
To be fair PNGPIL the Kiups in our day keep the bois busy on the job and mostly the airstrips were in good nick. No so today I think.
But you probably mean they was tricky buggers to find/ operate in and out of. They don't have that much fun nowdays