Garmin GPS 175, Pilot'S Manual

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3-30 GPS 175/GNX 375 Pilot’s Guide 190-02207-02 Rev. B
Navigation
3.6 Dead Reckoning
WARNING
DO NOT USE PROJECTED POSITION DATA AS THE ONLY MEANS OF
NAVIGATION.
When dead reckoning mode is active:
•
Map reports “No GPS Position”; overlays are not available
•
DR mode annunciation replaces ENR or OCN
•
Terrain functionality is not available
•
Traffic displays on its dedicated page only
•
CDI is not available
Dead reckoning mode ends once GPS position is restored.
Points About Dead Reckoning
•
Provides limited navigation using the last known position and speed following
the loss of GPS navigation while on an active flight plan
•
Becomes active after a loss of GPS position while navigating using an active
flight plan and the flight phase is either En Route or Oceanic
•
Allowed only during en route and oceanic phases of flight