For the past year we have had this lovely piece of kit.
Our operations are in transport category aircraft into many and varied airports with little or no navaids and no radar environments.
It has a very good predictability rate, but and it is a but..... the data base is not accurate away from major traffic areas.
The db is slowly being updated but the civil authorities are starting to raise eyebrows at the number of incident reports being generated by incorrect warinings.
Other than the db corrections the unit is the best thing to be put in the modern cockpit and will undoubtable save many more lives in the future.