February 9, 20206 yr HI there, one issues I did encountered recently is when I tried to fly to ORBX KPSP rendition. The airport has great RNAV approaches to 31L and 13R but they are not present in the GTN. Is this an issue of the Garmin Trainer? Because it is confusing, the charts for the RNAV approaches are there but not the approach itself. KPSP is no small airport in the middle of nowhere which makes this even more confusing ;). Anybody has an idea? Thanks a lot.
February 9, 20206 yr Hi, You might want to try enabling the RF legs in the AFMS settings and see whether this helps? https://www.pilotsofamerica.com/community/threads/curved-approach-path.70808/#post-1447877 Quote RNAV (GPS) approaches can use the curved path RF leg type, but you won't find any of these in the existing WAAS GPS databases as none of the Garmin panel mount GPS units support the RF leg in their AFMS. They have the software to perform the RF leg type, but until the FAA approves the use these legs with the GPS for part 91 operations, Garmin can't include them in the database. At that point, Garmin would have to update the software to enable the RF leg to be used and issue a new AFMS to go with the ability. The poster child is the RNAV (GPS) X RWY 24 at KCRQ. You can find the RNAV (GPS) Y RWY 24 in the database, but not the X. At one point, the Y included the RF leg, but this prevented the procedure from being in the database, so the X was added that just has the RF leg feeder route and it was removed from the Y so it could be put back in the database. Garmin did a white paper on the subject of flying the RF leg and demonstrated that with a minimum of training that it could be flown by pilots with all levels of experience. Otherwise It could be missing by error (this happens):https://www.garmin.com/en-US/aviationalerts/category/aviation-database-alerts/ Or it could be excluded:https://avdb.garmin.com/docs/garmin_data_exclusions.html
February 9, 20206 yr Those procedures are RNAV (RNP) AR or authorization required approaches. Unless the aircraft is certificated for RNP AR, which the GTN alone would not be, the approaches are required to be excluded from the database. Further, RNP AR approaches are subjected to additional database scrutiny and validation testing. That usually requires a separate, RNP AR qualified database with all the RNP AR approaches included for the coverage area. If you want to know more, Google "FAA AC 90-101A". Rich Boll Wichita KS Richard Boll Wichita, KS
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