The Indonesian Air Force (TNI AU) is planning to buy sophisticated 4.5 generation fighter jets, including France-made Dassault Rafale and used US-made F-15s, ...
en.antaranews.com
Now, Antara put in their article the F-15 is used ones while Rafale is new one. This's could make sense, since Prabowo's claim that some of F-15 can come soon. If they're using existing F-15E already in USAF inventory (since they're replacing some of them with EX version) then it can be done faster as Prabowo's claim.
On the other hand, it can also some miss quote from Antara. Still Antara is official news agency, putting claim of 'used' F-15 while the others claim F-15EX. For me personally Antara claim can be believable due to time period claim that Prabowo's stating in TNI High Level meeting (Rapim).
As budget, right now there're many speculation. Since I still not see official number yet. From Alman Helvas (and many forumers used) USD 1.6 bio, to CNN that claim already see official letter talking about USD 21 Bio.
For me, I still believe what I hear from my colleagues in Bapenas that talk what already pass the calculation process from them are 2 packages of Fighters procurement. One for Su-35 sq (around USD 1.1+ bio) and for F-16V 2sq (around USD 2.3+ bio). Thus if MinDef want to change the packages, they've to modify the existing packages. This can be done by changing some other procurement packages from overall MinDef.
Thus personally I think the procurement packages still based from what already calculate, only being change from Su-35 to F-15E (still need to clarify it's new ones or used and refurbished ones), and F-16V being change to Rafale. However I also believe that some AF or other services foreign procurement program will be reduced, to compensate increase USD amount on the fighters packages budget.
For USD 21bio on MinDef International procurement budget feasible or not ? If they're using multiyears calculation of Foreign Credit Line (as usual for Foreign Financing transaction as I've put sometimes ago), which based on medium financing line that Ministry of Finance usually used of 7 years, then it's doable. With MTN trend interest for 7 years average period, it's talking around USD 3.5 bio annually.
With refurbished F-15E and newly build Rafale, it's still not clear yet if MinDef already using lifetime calculation procurement budget. Lifetime calculation budget should be used if they're using multiyears budget calculation. Hopefully Bapenas make sure on that.
This USD 21 bio international procurement budget, I don't believe it's only for TNI-AU. I suspect 40% for TNI-AU, 40% for TNI-AL, and 20% for TNI-AD. Remember this budget (whatever the final number will be) only use for foreign procurement that using Foreign credit line. Domestic procurement will usually using different budget package Financing. That's why I only predicted the Army using 20% of foreign financing, as so far the Army already source more from Domestic thus using domestic financing.
Again it's only my calculations based on whatever circle around in Media. USD 21 bio foreign credit line for foreign procurement with interest come to around USD 24-25 bio total due on average of 7 years tenure. This will make around 30% of total defense budget (using conservative annual increment of defense budget 5% from this year USD 10 bio). Looking on that assumption, then USD 21bio foreign procurement budget is doable, however very tight.