Mendi. I'll meet you half way - it was before Talair took over Macair around 1976 to 1978, so my guess would be around 1972 - and that is over 35 years ago.
Torres
Last entry in my log for P2-PNH was the 8th of March 1974 Kisengan-Nadzab coffee shuttles
How about something like a day after that?
ASN Aircraft accident 09-MAR-1974 Pilatus PC-6/B Turbo Porter VH-PNH