4-33190-01004-03 Rev. P GTN 625/635/650 Pilot’s GuideForewordGettingStartedAudio &Xpdr CtrlCom/NavFPLDirect-ToProcWpt InfoMapTrafficTerrainWeatherNearestServices/MusicUtilitiesSystemMessagesSymbolsAppendixIndex4.3.5 Parallel TrackNOTE: En route vertical navigation is unavailable while the parallel trackfunction is active.Parallel track allows you to create a parallel course offset of 1 to 99 NM tothe left or right of your current flight plan. After setting a parallel track to yourcurrent flight plan, a magenta parallel track line will be drawn offset from theoriginal by the selected distance. The original course line will be drawn in gray.The aircraft will navigate to the parallel track course line and external CDI/HSIguidance will be driven from the parallel track.When you reach the end of the flight plan, a message will state, “Paralleloffset terminating in X seconds.” The message will be given when the aircraftreaches the offset distance from the end of the parallel track. This will give thepilot sufficient time to intercept the original course.Figure 4-50 Parallel Track DescriptionNOTE: In software v6.21 and earlier, graphically editing a flight plan cancelsthe parallel track function.
