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Picture of product GNC-355

Part #:

Model: GNC-355



Part Number :




  • Slim, all-in-one touchscreen GPS navigator and Comm radio for Part 23 Class I/II aircraft (weighing less than 6,000 lbs) and experimental/amateur-built aircraft
  • GPS navigator with Localizer Performance with Vertical (LPV) approach guidance, complete with a built-in Comm radio
  • The SBAS/WAAS-certified GPS receiver can allow you to fly GPS-guided LPV glidepath instrument approaches down to as low as 200’
  • GNC 355 offers 10 watts of transmission power with 25 kHz frequency channel spacing or 8.33 kHz channel spacing options (GNC 355A)
  • The ADS-B weather link provides in-flight access to animated NEXRAD imagery, METARs, TAFs, winds and temperatures aloft, PIREPs, NOTAMs
  • Built-in 10-watt Comm radio with 25 kHz or optional 8.33 kHz channel spacing (with GNC 355A) plus standby frequency monitoring and automatic frequency identification
  • GNC 355 can provide advisory vertical approach guidance based on a published glidepath angle or a 3-degree approach glideslope from the runway threshold
  • Pairs with select Garmin flight displays, or integrates directly with your existing course deviation indicator (CDI) for cost-effective installation
  • Visualize your entire flight plan — including departures, arrivals, instrument approaches, holding patterns and more — on a rich, dynamic global moving map
  • Wirelessly transfer flight plans and stream weather, traffic, GPS position and backup attitude via built-in Connext
  • GNC 355 automatically displays the station’s identifier right below the frequency
  • Standard 6.25-inch wide by 2-inch tall design
  • Vibrant, colorful and responsive touchscreen display
  • Fully WAAS/SBAS IFR-approach-capable
  • Built-in standby frequency monitoring
  • Interface options include pairing the GNC 355 with a dual-link Garmin Automatic Dependent Surveillance-Broadcast (ADS-B) solution, such as the GTX 345 or GDL® 88
  • Graphical flight plan editing, allowing pilots to edit their flight plan based on an ATC amendment or weather
  • Smart AirspaceTM makes it easier to identify pertinent airspace on the moving map



TSO APPPLIABILITY: C128a; 2C128; C146e Class 3; C157b Category 1; C165a; C169a Class C, E, 4, 6; 2C169a, Class C, E, H1, H2, 4, 6; C195b Category B1, B3, B5, B7 display size: 4.8"(122.5 mm) Diagonal
UNIT Weight: 3.3 lbs. (1.5 kg) display resolution: 732 pixels (W) x 240 pixels (H)
unit bezel height: 2.02" (51.0 mm) unit bezel width: 6.25" (159.0 mm)
maximum altitude: 35,000 ft unit depth with connectors: 11.23" (285 mm) (measured from face of aircraft panel to rear of connector backshells)
input voltage range: 9 VDC-33 VDC MAXIMUM DISPLAY BRIGHTNESS: 260 fL
OPERATING TEMPERATURE : -20° C to 55° C (-4° F to 131° F) BLUETOOTH VERSION: 4.2
NUMBER OF GPS CHANNELS: 15 (12 GPS and 3 GPS/WAAS/SBAS) LAT/LON POSTION ACCURACY:  <1.25 meter RMS horizontal, < 2 meter vertical, with WAAS
MAXIMUM VELOCITY: 1,000 knots (above 60,000 feet) POSITION UPDATE INTERVAL: 0.2 sec (5 Hz)




Part Number: Description:
010-02232-00 GNC-355
010-02232-50 GNC-355
010-02232-51 GNC-355
010-04956-00 GNC-355



- Nav/Comm
Price Condition Status
- GPS/Comm (International)
Price Condition Status
- GPS/Comm (Americas)
Price Condition Status
- Nav/Comm
Price Condition Status

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact

In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

Garmin has provided Service Advisory 2051 for general recommendations, materials, and supplies to clean and disinfect Garmin products. Otherwise, not following the recommendations could void the warranty.

  • Cleaners containing ammonia will harm the anti-reflective coating on many Garmin aviation display lenses.
  • Disinfectant with a solution of 70% isopropyl alcohol that does not contain ammonia is preferred. Solutions of up to 91% isopropyl alcohol are also acceptable.
  • Clean the display lens using a clean lint-free cloth and a cleaner that is specified as safe for anti-reflective coatings.
  • For other exposed surfaces such as knobs, buttons, and bezels, a damp cloth with soap and water is acceptable.
  • Bleach-based cleaners, ammonia-based cleaners, or other harsh chemicals on any surface are not recommended.
  • Remove all soap/soap residue to prevent buttons and knobs from gumming up or becoming slippery.
  • Many aviation products are not rated as waterproof. Spraying or wetting the units to the extent where moisture could go beyond the exterior surfaces could damage the unit.