Complex sentence: By 2015, it will take delivery of 16 Yakovlev Yak-130,9 K-8 aircraft and new Nanchang PT-6s, which will replace the existing fleet of the same aircraft.
Split into simpler sentences: By 2015, it will take delivery of 16 Yakovlev Yak-130 and 9 K-8 aircraft. Soon, new Nanchang PT-6s will replace the existing fleet of earlier models of the same aircraft.