The simple answer is: the ICAO code for Piseco is wrong - it´s K09 and not KK09 … try K09 in the SimBrief flightplan and it should work 
Happy flying …
Richard
The simple answer is: the ICAO code for Piseco is wrong - it´s K09 and not KK09 … try K09 in the SimBrief flightplan and it should work 
Happy flying …
Richard