tried it today and failed, on descent to Cali, Colombia i tuned in the `Tulua` beacon on 117.70 and tuned in `Palma` on the DME on 247.0, selected NAV mode and pressed the NAV button, but then why did ATC tell me to circle the airport and land on runway 1 from the south instead of doing the `Palma` arrival to land on runway 19 which is a straight in approach. my passengers had a very uncomfortable landing.