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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