Garmin GPS 165TSO Pilot's Manual

Contents

When does turn anticipation begin, and what bank angle is expected?The GPS 165 will smooth adjacent leg transitions based upon a nominal 15º bankangle (with the ability to roll up to 25º) and provide three pilot cues for turn anticipa-tion: 1) The waypoint annunciator will flash 15 seconds before the turn point andglow steadily 2 seconds prior to the turn anticipation point. Begin the turn when theannunciator goes steady. 2) A flashing ‘next dtk’ prompt will appear on the GPS 165’sCDI field. Set the HSI to the next dtk value when the waypoint annunciator startsflashing. 3) The To/From indicator on the GPS CDI will flip momentarily to indicatethat you have crossed the midpoint of the turn. For more on turn anticipation, seepages 60-61 & 67.When does the CDI scale change, and what does it change to?Whenever an approach is selected and armed, the GPS 165 will begin a smoothCDI scale transition from the 5.0 nm to the 0.3 nm scale 30 nm from the destinationairport (see right). The CDI scale will remain at the 0.3 nm scale from the FAF to theMAP during the active approach. If you are in a missed approach situation, andwould like to return the CDI to the 1 nm scale,you may deactivate the approach by releasing theGPS APPR switch from the ARM position.Why does my CDI not respond like a VORwhen the GPS SEQ switch is set to HOLD?Unlike a VOR, the CDI scale used on GPSequipment is based on the cross-track distance tothe desired course, not an angular relationship tothe destination. Therefore, the CDI deflection onthe GPS will be consistent regardless of the distanceto the destination, and will not become less sensi-tive when you are further away from the destina-tion. For more on the CDI scale, see pages 64-65. 115APPENDIX FTroubleshooting Q & ACDI Scale Transition5 nm5 nm 5 nm5 nm2nm 2nmGPS VOR0.3 nm30 nm2 nmFAFMAP1 nm1 nm5 nm1 minute