This Yak was re-registered in late 2006 from LY-AQC to RA-3326K. On the first picture, you can see the Yak at its homebase Seppe during early 2007.
Below you can see the Yakovlev Yak-52 when it still was registered as LY-AQC, while attending the fly-inn at schaffen during august 2004: