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190-00356-00 Rev E
7 - NRST PAGES
145
Nearest Airspaces
Note that the airspace alerts are based on three-
dimensional data (latitude, longitude and altitude) to
avoid nuisance alerts. The alert boundaries for con-
trolled airspace are also sectorized to provide complete
information on any nearby airspace. Once one of the
described conditions exists, the message annunciator
will flash, alerting you of an airspace message.
To view an airspace alert message:
Airspace Name
Eighth Page
in NRST group
Status and
Time to Entry
1. When the message annunciator above the
MSG key flashes, press MSG.
2. Press MSG again to return to the previous
page.
Once you have been provided an airspace alert
message, detailed information concerning the specific
airspace is provided on the nearest airspace page. The
nearest airspace page displays the airspace name, status
(“Ahead”, “Ahead < 2nm”, etc. as described on the
previous page), and a time to entry (if applicable). By
selecting any airspace name listed on the nearest air-
space page, additional details will be provided—includ-
ing controlling agency, communication frequencies
and floor/ceiling limits.
To view additional details for an airspace listed
on the nearest airspace page:
1. Select the nearest airspace page.
2. Press the small right knob to activate the
cursor.
3. Turn the large right knob to scroll through
the list, highlighting the desired airspace.
4. Press ENT to display the airspace page for the
selected nearby airspace.
5. To return to the nearest airspace page, verify
that “Done?” is highlighted by the flashing
cursor and press ENT.