VH-BPB was cancelled 05.07.1982 as exported to USA as N3850K, then had a couple of other rego's , then to NZ, then to UK, then sold to Philippines. Think it is currently at Manilla. The operator of this one is not to hand, but, Unity Airlines in Vanuatu currently operate a "yellow" Tri, reg YJ-OO19, so could be them at a guess.