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15-11190-01004-03 Rev. B
Garmin GTN 625/635/650 Pilot’s Guide
Foreword
Getting
Started
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Music
Utilities
System
Messages
Symbols
Appendix
Index
15.2.3 Circle of Uncertainty
The Circle of Uncertainty depicts an area where the ownship location is
guaranteed to be when the aircraft location cannot be accurately determined.
The area of the Circle of Uncertainty becomes larger as GPS horizontal accuracy
degrades and smaller as it improves. The Circle of Uncertainty is shown only
when the aircraft is on the ground. The Circle of Uncertainty area is transparent
so that features within it may still be seen.
Area Within The
Circle Of Uncertainty
Ownship Symbol
Figure 15-9 Circle of Uncertainty
15.3 External LRUs
The External LRU page displays the external equipment connected to the
GTN and their connection status.
1. While viewing the System page, touch the External LRUs
key.
LRU Available And
Communicating
LRU Not Available
Or Communicating
Touch For More
Information
Figure 15-10 External LRU Page
2. When more information is available about the listed units,
touch the More Info key to view the information.