GNS 430(A) Pilot’s Guide and Reference
190-00140-00 Rev. P
8-12
SECTION 8
NRST PAGES
• If the aircraft has entered an airspace, the message
‘Inside Airspace’ appears (Figure 8-30). The
Nearest Airspace Page shows ‘Inside of airspace’.
Figure 8-30 Airspace Messages
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 the pilot of an airspace message.
To view an airspace alert message:
1) When the message annunciator above the
MSG
Key flashes, press the
MSG
Key.
2) Press the
MSG
Key again to return to the
previous page.
Once an airspace alert message appears, detailed
information concerning the specific airspace is provided
on the Nearest Airspace Page (Figure 8-31). The Nearest
Airspace Page displays the airspace name, status (‘Ahead’,
‘Ahead < 2nm’, etc., as described on the preceding
page), and a time to entry (if applicable). By selecting
any airspace name listed on the Nearest Airspace Page,
additional details are provided—including controlling
agency, communication frequencies, and floor/ceiling
limits.
Figure 8-31 Nearest Airspace Page
Message
Annunciator
Status and
Time to Entry
Current Page Group
Airspace
Name
Position of
Current Page
within Current
Page Group
Number of Pages in
Current Page Group
To view additional details for an airspace
listed on the Nearest Airspace Page:
1) Select the Nearest Airspace Page, using the
steps outlined in Section 8.1 (Figure 8-32).
Figure 8-32 Nearest Airspace Page
2) Press the small
right
knob to activate the
cursor.
Summary of Contents for GNS 430
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