And just to clarify C206 VH-GKP was reregistered P2-GKP 2.5.74
I cannot find any other information on that aircraft however P2-GKP, a Baron, went missing 25.10.77 so it must have taken over that registration.
After that a C402 was registered P2-GKP
So GKP was 3 diffent aircraft over time.