The PC-21's are still ferrying into Australia, averaging 2 per month.

If you are tracking these aircraft the Dec 2018 arrivals were HB-HWY and HB-HWZ both in Roulette colors.

The first two for this year arrived into East Sale on the 21/01 as HB-HWA and HB-HWB.

In other words they are re-using the same HB-HW? series.

Good Hunting