Right Way Up:
Would be interested to see if Turkish were certificated for this sort of approach. We had issues at my company where our aircraft were capable and we were trained but to operate to lowest minima we required Airbus certification for each aircraft to carry out this approach at a cost of circa £100,000 per aircraft.
Don't know what model you operated but the 330 should "come out of the box" certified for RNAP AR approaches to 0.10. The other part of the equation is for the operator to get approval from its certificate holder to fly such approaches. That would including the requisite training of the flight crews, ground school and simulator and a specified number of 0.30 approaches on the line before lower RNP values can be used.
I can't speak for Turkey, but in the U.S. RNP AR approaches are not in the database until the approval process is completed.