It's a struggle... best information I have after several phone calls this morning is that the old WWII silk 1:250,000 maps that my deceased Dad used to have may well be the most up-to-date information available!!! ONC/TPC are unavailable anywhere, it seems. RAAF Richmond got a little defensive when asked if any current info/maps were available! There's a possibility I may be able to get a topo (non-aeronautical) from Sydney -but I can't get an answer on the phone and am not prepared to order online until I know a little more about it, availability etc.
Thanks for the offer HarleyD, but please don't put yourself to any bother on my behalf. Seems my best chance may be to try to source charts when I arrive in Indo later next week. Does anyone have any suggestions for sourcing charts whilst in Jakarta?