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To change any of the selectable fields on the CDI page:
1. Press
C
twice to activate the cursor in the GPS window.
2. Rotate
O
to highlight the field you would like to change.
3. Rotate
K
to change the field to display the desired information.
4. Rotate
O
to highlight another field, or
C
to finish.
The next page available from the GNC 250’s NAV key is the navigation com-
munications (NAVCOM) page. The NAVCOM page provides a list of the airport
frequencies at your departure and arrival airports, allowing convenient selection of
frequencies you’ll need along your flight path. To scroll through the list of frequen-
cies, rotate the inner knob (
K
) in the direction of the arrow prompts at the bot-
tom left of the page.
The frequencies displayed for the departure and arrival airports are listed in the
order you are most likely to use them (see left), with the available frequencies dis-
played to the right of the airport identifier. If you do not have an active route with
a departure airport, the NAVCOM page will display the frequencies for the airport
nearest your present position.
12
REFERENCE
Waypoint
Communication
The NAVCOM page lists the frequencies for your
departure (or nearest) and arrival airports in the
following order:
Departure Arrival
• Unicom • ATIS
• ATIS • Approach
• Clearance Delivery • Arrival
• Clearance Pretaxi • TCA
• Ground • TMA
• Tower • CTA
• Multicom • ARSA
• Other • TRSA
• Departure • Tower
• TCA • Multicom
• TMA • Other
• CTA • Ground
• ARSA • Unicom
• TRSA
SECTION
1
NAV KEY
CDI &
NAVCOM Pages
250 real 7/14/98 9:31 AM Page 12