6-16GTN 625/635/650 Pilot’s Guide 190-01004-03 Rev. PForewordGettingStartedAudio &Xpdr CtrlCom/NavFPLDirect-ToProcWpt InfoMapTrafficTerrainWeatherNearestServices/MusicUtilitiesSystemMessagesSymbolsAppendixIndex6.9 Radius-to-Fix (RF) ApproachesRF legs associated with RNAV RNP 1.0 non-AR (Approval Required)approaches are supported by the GTN in v6.00, or later, when approved by theinstallation.• AC 90-101A defines RF leg as “a constant radius circular path, around adefined turn center, that starts and terminates at a fix. An RF leg may bepublished as part of a procedure.”• Flying the RF leg of an approach is similar to flying a DME arc approach.All GTN annunciations and indications are identical whether flying DMEarcs or RF legs with the GTN.• RF legs may have a larger or smaller radius than DME arcs.• Unlike DME arcs, RF legs are not based on a VOR.• Refer to the aircraft AFMS for specific details regarding RF legs for aspecific aircraft.6.10 Vectors to FinalWith “Vectors-To-Final” (VTF) selected, the CDI needle remains off centeruntil you’re established on the final approach course. With the approachactivated, the Map page displays an extension of the final approach course inmagenta (remember, magenta is used to depict the active leg of the flight plan)and “vtf” appears as part of the active leg on the Map page (as a reminder thatthe approach was activated with vectors-to-final).NOTE: In software v5.13 and earlier, once VTF is activated all waypoints inthe approach prior to the FAF are removed.NOTE: In software v6.00 and later, all waypoints along the final approachcourse, including waypoints before the FAF, are included in the flight plan andthe final approach course to the FAF is activated.
