STOL operated VH-COO, and VH-COB - both non-turbo Aztec C models - between 1965 and when I left in 1970.
It also had the turbo Aztec C, VH-COC, online during that time, flying general charter & Reg 203 work.
Thru that period, Mapmakers were cross-hiring the old 310B, VH-ACB for photo work.
Mapmakers also had, I think, another turbo Aztec C, VH-PYY, around 1969
During the late '60's, Airfast had a couple of Aztec B models, VH-UNA and UNB, doing the crew change work to Kerema, Daru and Horn for the Glomar rig. Then in '69, they swapped one of them for the Aztec C, VH-UNK, which had been based in Rabaul with Airfast.?
The Aztec C, VH-SRP, originally belonged to Ron Slaughter, a Papuan planter and entrepeneur, who was one of Ron Firns' backers when he setup Stol Air Services in about '62-63?
The turbo Aztec C, VH-SPM, belonged to the South Pacific Aero Club, had a short life in PNG -to unfortunately end up on the N side of Mt Victoria in 1970.
I flew all of these Aztecs, and all had the original Piper paint schemes...although in the case of the Stol fleet - they were a bit tired.
happy days,