Section 4 Navigation; Introduction; Map Data; Map Range - Garmin GI 275 Pilot's Manual

4.1 INTRODUCTION

WARNING: Always refer to current aeronautical charts and NOTAMs for verification of
displayed aeronautical information. Displayed aeronautical data may not incorporate
the latest NOTAM information.
WARNING: Do not use Basemap information (land and water data) as the sole means
of navigation. Basemap data is intended only to supplement other approved navigation
data sources and should be considered only an aid to enhance situational awareness.
The 'HSI Map' Page is available for navigation when the MFI is configured as a Standby ADI,
Standby HSI, Primary HSI, or as an MFD. Both the 'HSI Map' Page and the 'Map' Page are
available for navigation when the MFI is configured as a Standby ADI or MFD. Both the 'HSI
Map' Page and the 'Map' Page display aviation data (e.g., airports, VORs, airways, airspaces),
geographic data (e.g., cities, lakes, highways, borders), and topographic data (map shading
indicating elevation). See the Map Data discussion in this section for more information.
Along with map data, the 'HSI Map' Page and the 'Map' Page display aircraft position, Direct
To navigation, and flight plan data. See the Direct-to and Flight Plan Navigation discussion in
this section for more information.
The MFI is equipped with an internal GPS, though it may only be used for VFR navigation
purposes. If available, an external GPS will be used rather than the internal VFR GPS. The
VFR GPS will only be available for use if either of the following conditions are met:
• No external GPS is configured
• External GPS data is lost
GPS navigation is discussed in the Direct-to and Flight Plan Navigation discussion in this
section; information concerning loss of GPS is discussed in the Abnormal Operations portion
of this section.

4.2 MAP DATA

This portion of the Navigation section will provide an overview of the different kinds of map
symbols and overlays which can be displayed, along with map range and detail information.
Setup information is covered separately for the Primary HSI and the MFD.

MAP RANGE

The current range setting is indicated on the Range Button. The range setting may be changed
by zooming in and out. To change the map range, turn the Inner Knob counter-clockwise or
touch and pinch fingers together to zoom out and increase the range. Turn the Inner Knob
clockwise or touch and spread fingers apart to zoom in and decrease the range.
190-02246-01 Rev. A

SECTION 4 NAVIGATION

Garmin GI 275 Pilot's Guide
Navigation
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