Garmin G600 Pilot's Manual page 97

Class C/TCA Airspace Viewing Range
The Class C/TCA airspace viewing range option allows you to select the map
range and below where Class C/TCA airspace information will appear on the
MFD. Map ranges above the selected value will not show Class C/TCA airspace
information. When Off is selected, the information will not be shown.
Figure 3-50 Navigation Map Class C/TCA Viewing Range Selection
1) While viewing the Navigation Map Setup page and the Aviation Group active,
turn the large MFD knob to highlight the "Class C/TCA Viewing Range"
option.
2) Turn the small MFD knob to change the highlighted value.
3) Press ENT to accept the displayed value. The next option will be highlighted.
4) Press the small MFD knob to cancel selection or to end editing and return to
the Navigation Map page or turn the large MFD knob to the next option.
190-00601-02 Rev. B Garmin G600 Pilot's Guide
3-39