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GNC 420/420A Quick Reference
190-00140-21 Rev. F
NEAREST AIRPORTS
15
Scrolling through the list of frequencies:
1) Activate the cursor, if not already active, by
pressing the small right knob.
2) Turn the large right knob to move the cursor
through the list of frequencies. If there are
more frequencies in the list than can be
displayed on the screen, a scroll bar along the
right-hand side of the screen indicates which
part of the list is currently being displayed.
Auto tuning a frequency from the NAVCOM
Page:
1) Highlight the desired frequency by scrolling
through the list of frequencies, as described in
the preceding procedure.
2) To place a frequency in the standby field of the
COM Window, highlight the desired frequency
and press the ENT Key. (NAV frequencies are
shown for reference only.)
BOTTOM ROW ANNUNCIATORS AND MESSAGES
See Pilot’s Guide for detailed information.
TERRAIN Annunciator
TERRAIN,
TERRAIN (Flashing),
TER FAIL,
TER INHB,
TER N/A
CDI/RAIM Mode
Approach,
Enroute,
Oceanic,
Terminal,
‘0.30’ (for
VLOC approaches)
Integrity Failure
INTEG
Position Warning
WARN (RAIM protection
limit failure)
Message Annunciator
On,
Flashing (new message),
Blank (no message)
Page Group Indicator
NAV, WPT, AUX, NRST,
FPL, DRCT, PROC, MSG
Waypoint Alert
NEXT DTK, etc.
Turn Advisory
TURN TO_, etc.
OBS Mode
Suspend,
OBS,
Blank (for auto-
sequencing)
Viewing a list of nearest airports:
Press the NRST Key to display the Nearest
Airport Page. ‘NRST’ will appear in the lower
right corner of the screen.
Scrolling through the list of nearest
airports:
1) Press the small right knob to activate the
cursor.
2) Turn the large right knob to scroll through the
list. The scroll bar along the right-hand side of
the page will indicate which part of the list is
currently being viewed.
3) To remove the flashing cursor, press the small
right knob.