Indonesian AF will not turn to kind of Saudi's AF. We simply do not have that kind of budget anyway
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Still the pattern of procurement already occured. The Fighters for some time in the future will be focus on F-16 and SU-30. Despite some speculations by local forumers and analyst in here on the F-5 replacement, the sign for me is quite clear that any replacement for F-5 will be F-16 as first choice or SU-30 as second choice. Hawk 109/209 will be kept in the inventory for at least for another decade. In short if any further procurement in fighters occured, the sign so far indicating on F-16 or Su-30.
Transport for medium-heavy will focus on C-130, and EADS will got light-medium transport with CN-295, CN-235, and CN-212, with possibility of N-219 if the prototype development goes ahead as schedulled. EADS already give IAe/DI the rights for 295 in Asia-Pacific, and 212 already moved the entire productions from Sevile Spain to Bandung Indonesia.
Yes, the danger of having too many types still there, if not carefull. Still so does to momentum for standarizing the types. Indonesia will not put their eggs in one basket anymore. However, I don't think they will sources from that many suppliers. Besides, the most important is the availability of the spare parts. Afterall, the Super Tucano even come from Brazil, but the components mostly US made.
Btw, Blackhawks seems never being entirely seriously considered. Blackhawks and Super Cobra being put, to complied with some parliament members whim. While at the same time the administration lobby quietly with those factions for Apache. It is back to politics as ussual. Anyway, the President will goes to poland and Russia soon. Locsl forum already buzzing with potential getting Polish made Blackhawks as replacement for stalled contract for Sokol and Skytruck. Well some tine local forum speculations can lead to something..will see.
Off course this can change after 2014. For instance, if the current political factions win 2014, the US and West origin assets can made larger portions on procurement relative to Russian origin. However if the oppositions wins, there probably will want more Russian procurement, but I still see them maintain US, Western origin assets. Still both of them agreed that politically any procurement has to benefit local industry.