http://militermeter.com/korea-selatan-tolak-tawaran-indonesia-soal-pengganti-uang-tunai-dalam-proyek-jet-tempur-kf-x-if-x/
South Korea Rejects Indonesian Offer for Substitution of Cash in the KF-X / IF-X Combat Jet Project
The Korea Times quoted the South Korean defense ministry as saying its country was cautious in continuing its fighter aircraft project with Indonesia, the KF-X / IF-X aircraft. This is after Indonesia delinquently paid contributions for this project around 1.7 trillion won or 20 percent of the total 8 trillion won.
Military and industrial sources from South Korea said that accepting CN-235 aircraft or other equipment instead of cash would not be the preferred choice.