Garmin 430w Manual

51
NAVCOM Page
NAVCOM Page
The NAVCOM (navigation communications) page 
provides a list of the airport communication and 
navigation frequencies at your departure, en route and 
arrival airports. The NAVCOM page makes selection 
of the frequencies you’ll need along your flight plan 
quick and convenient. If you do not have an active 
flight plan with a departure airport, the NAVCOM page 
will display the frequencies for the airport nearest 
your departure position. Only the 420AW and 430AW 
move...

52
Position Page
Some listed frequencies may include designations 
for limited usage, as follows: 
 “TX” - transmit only 
  “RX” - receive only 
 “PT” - part time frequency
If a listed frequency has sector or altitude restric-
tions, the frequency will be preceded by an “Info?” 
designation. 
To view usage restrictions for a frequency: 
1.   Turn the large right knob to place the cursor 
on the “Info?” designation directly in front of 
the desired frequency. 
2.   Press ENT to display the restriction...

53
Position Page
 NOTE: Do not rely solely on MSA as an absolute 
measure of safe altitude. Consult current charts 
and NOTAMs for your area. 
To change the user-selectable data fields: 
1.  Press MENU to display the Position page 
options menu. 
2.  Turn  the large right knob to highlight 
“Change Fields?” and press ENT. 
3.  Turn  the large right knob to highlight the 
data field you wish to change. 
4.  Turn the small right knob to display the list 
of available data items. Continue turning the 
small...

54
Restoring Factory Settings
7.  Press  the small right knob momentarily to 
remove the cursor from the page. 
8.     If “WPT” is selected as the waypoint type, you 
can designate any airport, NAVAID or user 
waypoint as a reference waypoint. Press the 
small right knob, turn the large right knob 
to highlight the waypoint identifier field, then 
use the small and large right knobs to enter 
the identifier of the desired waypoint. Press 
ENT to confirm the selected waypoint.  Press 
the small right knob...

55
Satellite Status Page
Satellite Status Page
The Satellite Status Page is helpful in troubleshoot-
ing weak (or missing) signal levels due to poor satellite 
coverage or installation problems. You may wish to 
refer to this page occasionally to monitor GPS receiver 
performance and establish a normal pattern for system 
operation. Should problems occur at a later date, you 
may find it helpful to have an established baseline 
from which to compare. 
GPS Receiver StatusSky View 
of satellite  positions...

56
Satellite Status Page
• 3D Navigation —  
The GPS receiver is in 3D navigation mode and 
computes altitude using satellite data. 
• 3D Differential Navigation— The GPS receiver is 
in 3D navigation mode and differential corrections 
are being used. 
The Satellite Status Page also indicates the accu-
racy of the position fix, using Horizontal Figure of 
Merit (HFOM), Vertical Figure of Merit (VFOM), and 
Estimated Position Uncertainty (EPU). HFOM and 
VFOM represent the 95% confidence levels in hori-...

57
Vertical Navigation - VNAV
To create a vertical navigation profile:
1.  Press  the small right knob to activate the 
cursor. 
2.  Turn  the large right knob to highlight the 
target altitude field. 
3.   Turn the small and large right knobs to select 
the target altitude and press ENT. 
4.   Turn  the small right knob to select “Above 
Wpt” (AGL) or “MSL”, and press ENT. “Above 
Wpt” will use the altitude of a destination air-
port as stored in the Jeppesen NavData card. 
“MSL” lets you set a specific...

58
Vertical Navigation - VNAV
With the profile set, the vertical speed required 
(VSR) is displayed on the vertical navigation page. 
Expect the following to occur when using the vertical 
navigation feature: 
•  
At one minute prior to reaching the initial descent 
point, a message “Approaching VNAV Profile” 
occurs. The descent angle will also lock to pre-
vent changes in speed from altering the profile. 
•  If selected, the vertical speed required (VSR) 
readout on the default NAV and map pages will...

59
Dead Reckoning
Dead reckoning is the process of continuing navi-
gation using your last known position and speed after 
a loss of GPS navigation while on an active flight plan. 
 CAUTION:  Navigation using dead reckoning is 
therefore only an estimate and should not be 
used as the sole means of navigation. Use other 
means of navigation, if possible. 
Dead reckoning becomes active after a loss of GPS 
position while you are navigating using an active flight 
plan. A pop-up message will appear and you...

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2 - NAV PAGES 
190-00356-00 Rev K