Special-Use/Controlled Air Space - Garmin GNS 430 Pilot's Manual & Reference

TAKEOFF TOUR
Special-use and
Controlled Airspace
When an airspace alert occurs, the message
(MSG) annunciator will flash. Press
view the alert message.
To view additional information about the
airspace, select the nearest airspace page.
Detailed information is available by highlight-
18
ing the airspace name and pressing
The last page in the NRST group, the nearest airspace page, provides information
for up to nine controlled or special-use airspaces near or in your fl ight path. Airspace
information appears on this page based upon the same criteria used for airspace alert mes-
sages. Nearby airspace information and airspace alert messages are provided according to
the following conditions:
• If your projected course will take you inside an airspace within the next ten
minutes, the message "Airspace ahead -- less than 10
minutes" will appear.
• If you are within two nautical miles of an airspace and your current course
will take you inside, the message "Airspace near and ahead" will appear.
• If you are within two nautical miles of an airspace and your current course
will not take you inside, the message "Near airspace less than 2nm" will
appear.
• If you have entered an airspace, the message "Inside Airspace" will appear.
By default, airspace alert messages are turned off. When turned on, the message (MSG)
annunciator located directly above the M key will fl ash to alert you to the airspace mes-
sage. (See page 154 for information on enabling airspace alert messages.)
M
to
To view an airspace alert message:
1. Press the
2. Press
Note that the airspace alerts are based upon three-dimensional data (latitude, longi-
tude and altitude) to avoid nuisance alerts. The alert boundaries for controlled airspace
are also sectorized to provide complete information on any nearby airspace. Additional
information about a nearby airspace—such as controlling agency, frequency and fl oor/
ceiling limits—is available from the nearest airspace page (see page 128 and illustrations
shown at left).
E
.
M
key. The message page appears with the alert message.
M
again to return to the previous display.