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Garmin GNC 255A/255B Pilot’s Guide
190-01182-01 Rev. A
3.2.4 Com Nearest Airports (APT)
The GNC 255 will report the 25 nearest Airports (APT), when interfaced
with an appropriate GPS receiver.
Turn SMALL Knob
To Scroll Through
Available Airports
Figure 3-11 Com Nearest APT Frequencies
1. Press FUNC to access the Functions. With the Com Frequency
Function highlighted, turn the SMALL knob to view the Com
Nearest APT function. Then, press ENT.
2. Turn the SMALL knob to display the available airports. Press
the ENT key to select the displayed airport. The frequency type
will be highlighted. Turn the SMALL knob to select the desired
frequency type.
3. Then, press the ENT key to set the displayed airport frequency
as the Standby or press and release the FLIP/FLOP key to set
it as the Active frequency. Or, press the CLR key to return to
the Functions display.