The following link is not available on the English part of the Turkish Air Force website
I have translated it using an online translator which is clearly excellent!
Türk Hava Kuvvetleri Resmi Web Sitesi
BASIC training aircraft Air project Forces Command 1963 since the basic flight training is used to and the lives of economic T-37 stuffed planes turboprop instead of the engine T-X aircraft supply to the planned. The Defense Industry executive Committee's 20 June 2007 of the on the decision, 55 total number of aircraft acquisition of the main contractor kai as a (Republic of Korea) was elected Firm.