Garmin GNS-430W

WAAS Panel Mount GPS System

Not Shippable
Garmin - Discontinued - 010-00412-01

2-year Manufacturer Limited Warranty


Garmin has stopped accepting orders for the GNS 430W, however they will continue supporting the product with repair services and maintenance software releases for the foreseeable future. We encourage you to check out Garmin's GTN series, which replaces the GNS products.


The WAAS-certified GNS 430W and its larger sibling, GNS 530W, lead the industry with multitasking, integrated avionics and cutting-edge WAAS navigation. The standard GNS 430W features a 10-watt comm, and for a slightly higher price, GNS 430AW delivers 16 watts of power output.

Integrate Your Avionics

GNS 430W is an all-in-one GPS/Nav/Comm solution. It features a WAAS-certified GPS, 2280-channel capacity comm and 200-channel ILS/VOR with localizer and glideslope. Traditionally it would take a host of components to provide the capabilities of this one smart box. High-speed 5 Hz processing makes navigation calculations and map redraw rates five times faster than earlier GNS series navigators.

Fly WAAS Approaches

GNS 430W comes with built-in WAAS navigation capabilities. It is approved to fly LPV “glideslope” approaches without reference to ground-based navaids of any kind. Featuring an advanced 15-channel receiver capable of five position updates per second, GNS 430W meets the FAA's stringent TSO C146a standards for WAAS "sole means" navigation — providing vertical and lateral approach guidance into thousands of U.S. airports previously inaccessible in IFR conditions.

Get High-Resolution Mapping

GNS 430W's 4-inch high-contrast display with brilliant colors makes it easy to read and interpret pilot-critical information. Effective use of color makes it easy to see your position relative to ground features, chart data, navaids, flight plan routings, approach procedures and more. Conveniently scan information from wide viewing angles, even in direct sunlight.

Enhance Situational Awareness

GNS 430W seamlessly integrates built-in terrain and navigation databases, providing a clear, concise picture of where you are and where you’re heading. The 430W's huge Jeppesen® database, updated with front-loading data cards, contains location reference for all airports, VORs, NDBs, Intersections, Flight Service Stations, published approaches, SIDs/STARs, Special Use Airspace and geopolitical boundaries. A detailed basemap clearly shows airports, cities, highways, railroads, rivers, lakes, coastlines and more. Using information from the built-in terrain and U.S. obstacles databases, the 430W displays color coding to graphically alert you when proximity conflicts loom ahead.

Put It on Autopilot

Working in tandem with standard autopilots that accept roll-steering commands, GNS 430W behaves like a high-end flight management system (FMS) and can automatically fly your aircraft through holding patterns, procedure turns and other position-critical IFR flight procedures.

Expand Your Panel Mount

GNS 430W is easy to interface with a wide array of optional sensors and tracking systems, allowing you to see and avoid hazards such as threatening weather, lightning or air traffic. With an optional subscription to XM WX Satellite Weather™ and the addition of the GDL 69 or 69A datalink receiver, you’ll have access to up-to-the-minute, high resolution weather for the U.S., right in the cockpit. Information includes NEXRAD, METARs, TAFs, lightning and more and can be laid directly over Jeppesen and topographic map databases. With an additional monthly service fee, GDL 69A delivers XM Satellite Radio to your aircraft. Add the Garmin GTX 330 Mode S transponder, and GNS 430W will also display Traffic Information Services (TIS) alerts that identify surrounding air traffic.

GNS 430W: Changing the course of aviation.


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  • Pilot-defined course selection and waypoint hold
  • Closest point of approach
  • Departure and arrival frequencies
  • Approach navigation using published approach procedures stored on NavData card
  • Terminal navigation using SIDs/STARs from NavData card
  • True airspeed
  • Density altitude
  • Winds aloft
  • RAIM availability
  • Sunrise/sunset times
  • Trip and fuel planning
  • Vertical navigation (VNAV)

Physical & Performance:

Unit dimensions, WxHxD: 6.25"W x 2.65"H x 11.0"D (15.9 x 6.7 x 27.9 cm)
Display size, WxH: 3.3"W x 1.8"H (8.4 x 4.6 cm)
Display resolution, WxH: 240 x 128 pixels
Display type: 8 color DSTN LCD; sunlight readable
Weight: 6.6 lb (3 kg)
Voltage range: 14-28
Built-in VHF Comm: yes, 8.33/25 kHz channel spacing
Transmit power: 10 watts minimum; 16 watts minimum (GNS 430A)
Built-in VOR/Loc/Glideslope: yes, ICAO annex 10 FM compliant
SBAS/WAAS receiver: 12 channel

Maps, Databases & Memory:

Basemap: yes
Navigation data: all U.S. & most intl. approaches, DPs and STARs
Navigation database coverage areas: Americas, International or Worldwide
Preloaded Terrain database: yes
Preloaded Obstacle database: yes
Preloaded SafeTaxi™ airport diagrams: no
Preloaded Garmin FliteCharts®: no
Jeppesen ChartView™: no
Waypoints/favorites/locations: 1,000
Flight plans: 20 reversible; up to 31 waypoints each

Features & Benefits:

Fly SBAS/WAAS approaches: yes
Front-loading datacards (conveniently update database information): yes
XM WX Weather & Radio for U.S. & Canada compatible: yes
Traffic Information Services (TIS) alerts compatible: yes
Class B TAWS alerting compatible: no

  • GNS 430W (10-watt comm) receiver TSO-certified to C146a, GAMMA 3
  • Basemap: Worldwide land
  • Jeppesen datacard
  • TAWS/Terrain datacard
  • TSO GPS antenna
  • Installation kit
  • Pilot's guide
  • Quick reference guide

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GNS-430W Product Commentary

Sarasota Avionics Since the late 90's, the Garmin GNS430W has been the backbone of what pilots have been upgrading their panels with for IFR enroute and approach GPS/Com/Nav units. Currently, this is still the lowest cost option for new equipment to install a GPS/Com/Nav that is capable of bringing WAAS Approaches into the cockpit. The GNS430W comes standard with a 10-watt Com transmitter, and there is an optional 16-watt Com transmitter available for higher flying aircraft. What continues to impress us is the reliability of these products over the course of time, and the excellent service Garmin provides should you need a repair. Just like the GTN750 and GTN650, you will find a plethora of flight planning and informational features on the GNS430W that give pilots all the information required to make good decisions. Terrain and Obstacle warnings come standard on the GNS430W, but this unit is also capable of displaying traffic, XM weather, XM radio channel selection, and Stormscope lightning information should these boxes be installed in the aircraft. The GNS430W is currently in the list of compatible displays for the Garmin GDL88 ADSB weather and traffic transceiver when it becomes available. Since its release, the GNS430W has served the General Aviation community well, and it continues to do so today.