Horatio. No idea. Don't recall the name. The photo would be pre 1974 as it is still in Talair colours with squashed cockroach on the tail.
Sundaun. Don't recall the accident or location but I don't think that looks like Chimbu/Kundiawa.
VH-GKI again. Facing the camera is Police Inspector Graham Breman, back on pilot Gary Honour. Photo would be taken between late 1965 to 1968 when the name "Territory Airlines" was painted on the doors only.
Poor thing, had more lives than a village tom cat!