What’s New with the
400W / 500W Series
New Operational Characteristics of the
WAAS GNS 400W/500W Series Units
versus
the Classic 400/500 Series Units
This document is written for:
• Garmin GPS 400W, GNC 420W/420AW, and GNS 430W/430AW Main System Software Version 2.00
• Garmin GPS 500W & GNS 530W/530AW Main System Software Version 2.00
© 2006 Garmin Ltd. or its subsidiaries. All Rights Reserved.
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The complete set of 400W/500W series Pilot Guides is available on-line at www.garmin.com.
190-00356-06 Rev A
December 2006 Printed in U.S.A.
The 400W/500W series of navigators with WAAS now offer many enhancements over the previous non-WAAS
models. Advancements include new WAAS-enabled GPS antenna, receiver, and associated software. The 400W/500W
series system complies with WAAS TSO C146a and also includes a significant hardware upgrade with a new and much
faster micro-processor. A terrain database for terrain awareness is included as a standard feature and now provides
even greater detail. The WAAS GPS receiver now allows you to use the 400W/500W series unit for primary navigation
and use GPS with vertical guidance for LPV, L/VNAV, and LNAV+V approaches. Non-precision approaches are annunciated as LNAV approaches. The Comparison of Features Summary table provides a quick view of the differences and
is followed by a more detailed description of feature changes.
Comparison of Features Summary
Feature Classic 400/500 New 400W/500W
1 TSO C129a – Supplemental navigation WAAS TSO C146a – Primary navigation
2 WAAS Capable No Yes
3 Approach Annunciations C129a non-precision annuncia-
tions
4 SBAS Selection No Yes for WAAS
5 GPS Position Calculation Rate Once per second Five times per second
6 GPS Software Level-C Level-B. More robust
7 Vectors-To-Final Yes Auto-Suspend (SUSP) is active for Vectors To Final
8 GPS/WAAS-Based Vertical Guid-
ance
9 Holding Patterns Yes Holding pattern depiction on the Nav mode
10 Autopilot Roll Steering Yes Includes active guidance during holding patterns
11 OBS Operation Yes OBS/SUSP behavior around the MAP is different
12 Hold to Altitude Yes Hold to Altitude legs will now use baro-corrected
13 Parallel Track No Yes
14 Magnetic Variation Options True, Magnetic, or User True or Magnetic
No GPS WAAS provides vertical guidance on the
C146a precision annunciations of LPV, L/VNAV,
LNAV+V, LNAV, and MAPR
(VTF) until on the “TO” side of the FAF and the
aircraft ground track is within a 45° course of the
published in bound course. At this point, the SUSP
annunciation will automatically extinguish.
available GPS approaches
moving map shows aircraft position and provides
active guidance
and procedure turns
altitude if it is available
1
Feature Classic 400/500 New 400W/500W
15 Terrain Database Optional Standard. Increased resolution.
16 Dead Reckoning (DR) No Yes
17 Satellite Status Page Yes Enhanced with new colors and 3D differential fix
notation.
18 Graphics Speed Good Much better
19 Crossfill Yes 12x faster
20 XM Radio Audio and Weather Limited, NEXRAD, METARs, no
audio control
21 KAP140/KFC225 Autopilot
Yes Annunciation added
Yes - Adds TAFs, TFRs, NEXRAD Coverage, and
audio controls
Operation-Compatible
22 GDL Configuration No GDL 69/69A
23 GDL 69/69A Data Link Diag-
No Yes
nostics
24 Traffic Range Rings Yes The numeric values for Traffic Range rings vary
with the installed traffic source.
25 Installation Individual aircraft field approval. Approved Model List for more than 900 aircraft
when installed per the STC.
26 How Can I Tell If I Have A WAAS
Unit
N/A View the first screen in the start-up routine.
Check other features.
2