Airspace - Lowrance 100 Installation And Operation Instructions Manual

arrow key. Finally, select "OBSTRUCT OPTIONS" and
press the right arrow key. The screen at right appears.
The defaults are: obstructions from 205 to 499 feet
(shown as 200-500 on the menu) off. Obstructions 500
feet and above off. MSL defaults on. You can change
any of these by highlighting the desired menu, then
pressing the left or right arrow keys.

Airspace

This unit can show the following airspaces: Class B and
C airspace, control zones, control areas (CTA), Termi-
nal Control Areas (TMA), prohibited, restricted, MOA's
(including training, danger, and caution areas), and alert
areas.
In this example, the Class C airspace surrounding Tulsa
International airport (TUL) is clearly visible as two dark
circles. The control zone airspace around Richard Jones
(Riverside) airport (RVS) is shown in gray.
This screen shows the Eureka MOA east of Wichita,
Kansas on the 80 nautical mile range.
All airspace defaults are on for this unit except warning
and alerts. An airspace alarm can be set that will warn
you if any of the above airspaces are within a preset
radius of your position. Another airspace alarm will "look-
ahead" and show how soon you will cross into an air-
space. See the alarms section for more information.
Airspace Status
You can view information about the airspace you're in
using the airspace status feature. To do this, press the
MENU key, then highlight "AIRSPACE STATUS" shown
at the top of the next page.
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