Garmin GPS GNS 430W User's Manual | Page 3

Garmin GPS User's Manual - GPS GNS 430W.
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Model Descriptions

This guide covers the operation of the GPS 400W, GNC 

420W, GNC 420AW, GNS 430W, and GNS 430AW. In 
general, all models will be referred to as the 400W-series
except where there are physical or operational differences. 
The 400W-series units are 6.25” wide and 2.66” high. The 
display is a 240-by-128 pixel color LCD. The units include 
two removable data cards: one with a Jeppesen database 
(inserted in the left-most card slot) and the second is a Ter-
rain database (inserted in the right-most card slot). 

GPS 400W

The GPS 400W is a GPS-only unit with a WAAS GPS 

engine and is TSO C146a certified for en route, terminal, 
precision, and non-precision approaches. The GPS 400W 
can simultaneously give aviators vital approach information 
and weather and traffic data in relation to their position 
on a color moving map display. Thanks to a high-contrast 
color display, the information can be easily read from wide 
viewing angles even in direct sunlight. Its color moving 
map features a built-in database that shows cities, high-
ways, railroads, rivers, lakes, coastlines, and a complete 
Jeppesen aviation database. The Jeppesen aviation database 
(can be updated with a front-loading data card) contains 
all airports, VORs, NDBs, Intersections, FSS, Approach, 
DPs/STARs, and SUA information. The obstacle and terrain 
databases provide an aid to navigation to help you work 
with approved navigation charts. 

Pilots will enjoy the GPS 400W as a multi-function 

display (MFD), especially when it is coupled with traf-
fic, lightning detection, and weather interfaces like Ryan 
TCAD, TIS from the Garmin GTX 330 Mode S transpon-
der, L3 SKYWATCH™, or STORMSCOPE® WX 500. With 
the FDE prediction program included with the Trainer CD, 
the GPS 400W may be used for oceanic or remote opera-
tions. For the latest in graphical and textual weather infor-

mation, the GPS 400W can connect to XM Satellite Radio’s 
XM WX Weather Service via the GDL 69/69A datalink 
receiver. The GDL 69A can also allow you to subscribe to 
XM audio services. 

GPS 400W

GNC 420W

GNC 420AW

GNS 430W 

GNS 430AW

GNC 420W and GNC 420AW

The GNC 420W and GNC 420AW include all of the 

features of the GPS 400W, and also include an IFR certified 
airborne VHF communications transceiver. This multipur-
pose unit is available with either a 10-watt (GNS 420W) 
or 16-watt (GNS 420AW) Com transmitter. Since the only 
difference between these two units is the power of the 
communications transmitter, references to the GNC 420W 
will also include the GNC 420 AW. 

GNS 430W and GNS 430AW

The GNS 430W and GNS 430AW include all of the 

features of the GPS 420W/420AW, and also include IFR 
certified airborne VOR/Localizer and Glideslope receivers. 
This multipurpose unit is available with either a 10-watt 
(GNS 430W) or 16-watt (GNS 430AW) Com transmitter. 
Since the only difference between these two units is the 
power of the communications transmitter, references to the 
GNS 430W will also include the GNS 430 AW. 

MODEL DESCRIPTIONS

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