12-9
190-01004-03 Rev. P
GTN 625/635/650 Pilot’s Guide
Nearest
12.8 Nearest Airspace
The Nearest Airspace page, alerts you to as many as nine controlled or special
use airspaces near or in your flight path. Alerts are provided according to the
following conditions:
• If your projected course will take you inside an airspace within the
next ten minutes, the alert message “
AIRSPACE ALERT - Airspace entry
in less than 10 minutes
” appears. The Nearest Airspace page shows the
airspace as “Airspace Ahead.”
• If you are within two nautical miles of an airspace and your current
course will take you inside, the message “
AIRSPACE ALERT - Within
2nm of airspace
” appears. The Nearest Airspace page shows the air-
space as “Airspace Within 2 NM.”
• If you are within two nautical miles of an airspace and your current
course will take you inside in less than 10 minutes, the message
“
AIRSPACE ALERT - Airspace within 2nm and entry in less than
10 minutes
” appears. The Nearest Airspace page shows the airspace as
“Ahead < 2 NM.”
• If you have entered an airspace, the message
“
AIRSPACE ALERT
-
Inside Airspace
” appears. The Nearest Airspace
page shows “Inside of airspace.”
Note that the airspace alerts are based on three-dimensional data (latitude,
longitude and altitude) to avoid nuisance alerts. The alert boundaries for
controlled airspace are also sectorized to provide complete information on
any nearby airspace. Once one of the described conditions exists, the message
annunciator flashes, alerting you of an airspace message (if airspace alert
messages are enabled). Refer to
System-Alerts
to set the Arrival Alert Proximity,
Airspace Type, and Altitude Buffer values.
NOTE:
The Airspace Alert setting does not alter the depiction of airspace,
or change the Smart Airspace setting for the main map page.
Summary of Contents for GTN 625
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