19711 CAMPUS DRIVE  SANTA ANA, CA 92707
PHONE: 949-757-0290 FAX: 949-757-0293
FAA CERTIFIED REPAIR STATION YH3R997L
                   

 

 

Garmin GNC 420 / GNC 420A
IFR GPS NAV/COMM
GNC 420
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Garmin has taken the navigation accuracy of a GPS and combined it with a 10- or 16-watt Com and color display to make the GNC® 420 the first color GPS/Com in the industry. With its frequency nomination feature, pilots can easily load their next Com frequency into standby with the touch of a button. It is a WAAS-upgradeable IFR GPS and Com with color moving map in one multipurpose unit. The TSO'd VHF Com offers a choice of 25 kHz or 8.33 kHz spacing for 760- or 3040-channel configuration respectively. A huge Jeppesen database (that can be updated with a front-loading data card) contains all airports, VORs, NDBs, Intersections, FSS, Approach, DPs/STARs, and SUA information. The GNC 420 is TSO C129a certified for GPS non-precision approaches.

Other boxes offer some of the same features as the GNC 420, but it's the integration of so many functions that sets this aviation product apart. The map features a built-in all-land database that shows cities, highways, railroads, rivers, lakes, and coastlines, in addition to a Jeppesen database in bright colors. Thanks to a high-contrast color display, the information can be easily read from wide viewing angles even in direct sunlight.

The GNC 420 has plenty of growth potential, as there are upgrade paths for WAAS compatibility, and Terrain awareness. Pilots will enjoy the GNC 420 as an MFD, especially when it is coupled with traffic, lightning detection, and weather interfaces like Ryan TCAD, TIS from the Garmin GTX 330 Mode S transponder, or Goodrich SKYWATCH™, STORMSCOPE® WX 500. For the latest in graphical and textual weather information, the GNS 530 can connect to XM Satellite Radio's XM WX Weather Service via the GDL 69 datalink receiver. With the FDE prediction program, the GNS 530 may be used for oceanic or remote operations.

This color IFR GPS/COM is available with either a 10-watt (GNC 420) or 16-watt (GNC 420A) COM.

Specifications

Plotter/Moving Map Features

  • Basemap: Worldwide Land; includes state/country boundaries, lakes, rivers, railroads, cities, coastlines; U.S., state, and interstate highways, and local thoroughfares
  • Plotting Scales: 1/10 to 3000 nm with push-button zoom control

Jeppesen® Database

  • Coverage: Americas, International or Worldwide
  • Airports: Identifier, city/state, country, facility name, lat/lon, elevation, fuel service, control, approach information
  • VORs: Identifier, city/state, country, facility name, lat/lon, frequency, co-located DME/TACAN, magnetic variation, weather broadcast indication
  • NDBs: Identifier, city/state, country, facility name, lat/lon, frequency, weather broadcast indication
  • Intersections: Identifier, country, lat/lon, nearest VOR
  • Frequencies: Approach, arrival, control area, departure, Class B, Class C, TMA, TRSA (with sector, altitude, and text usage info), ASOS, ATIS, AWOS, center, clearance delivery, tower, ground, unicom, pre-taxi, localizer, and ILS
  • Runways: Designation, length, width, surface, lighting, pilot-controlled lighting frequency
  • FSS/ARTCC: Identifier, frequency, usage
  • MSA: Minimum safe altitude along and in proximity to active flight plan
  • Approaches: Non-precision and precision approaches throughout the database coverage
  • DPs/STARs: Contains all pilot/nav DPs/STARs
  • Airspaces: Class B & C with sectors; International CTA & TMA with sectors; all SUAs, including MOAs; prohibited and restricted areas with controlling agency and airport

Safety Features

  • Emergency Search: 9 nearest airports, VORs, NDBs, intersections, or user waypoints; 5 nearest FSS and ARTCC frequencies
  • Alarms: Arrival; timers; airspace alarms at 10 minutes, 2nm, and inside airspace

User Customization

  • Waypoints: 1,000 User Defined
  • Flight Plans: 20 reversible routes of up to 31 waypoints each

Certification

  • GPS: TSO C129a, Class A1 (en route, terminal, and approach)
  • Oceanic Approval: Fault Detection and Exclusion (FDE)
    Performance
  • Receiver: PhaseTrac12™, twelve parallel channel receiver, simultaneously tracks and uses up to 12 satellites
  • Acquisition Time: 12 seconds (warm), 45 seconds (cold)
  • Update Rate: Once per second, continuous

Accuracy

  • Position: 15 meters (49 feet) RMS*
  • Velocity: 0.1 knot RMS steady state

Dynamics

  • Velocity (max): 999 knots
  • Acceleration(max): 6g's

Nav Features

  • 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 DPs/STARs from NavData card

Planning Features

  • True airspeed, density altitude, winds aloft, RAIM availability, sunrise/sunset times, trip and fuel planning, vertical navigation (VNAV)

Interfaces

  • ARINC 429, Aviation RS-232, CDI/HSI, RMI (digital: clock/data); Superflag Out, Altitude (serial: Icarus, Shadin-Rosetta, encoded Gillham/Greycode), Fuel Sensor, Fuel/Air Data, Stormscope, Skywatch, TCAD
  • Map Datums: 124 and 1 user-defined

Frequency Display

  • Upper left corner of active matrix LCD, 2-lines with active frequency above standby

Physical

  • Unit Size: Width = 6.25"; Height = 2.65"; Depth = 11.00" behind panel, with connectors
  • Unit Weight: 4.9 pounds installed (400); 5.8 pounds installed (420)
  • Display: Color LCD

Power

  • 11-33 VDC; 28 VDC (420 "A")

Data Storage

  • Separate internal battery protects stored data for up to five years

Environmental

  • Temperature: -20°C to +55°C (operating range); -20°C to +70°C (short-term operation)
  • Humidity: 95% non-condensing
  • Altitude Range: -1,500 ft to 50,000 ft

VHF COMM Performance

  • Frequency Display: Upper left corner of active matrix LCD, 2-lines with active frequency above standby
  • Channels: 760 (25 kHz spacing); configuration for 3040 channels (8.33 kHz spacing) also provided
  • Frequency Range: 118.000 MHz to 136.975 MHz
  • Transmit Power:
  • GNC 420: 10 watts (minimum)
  • GNSC 420A: 16 watts (minimum)
  • Modulation: 70%
  • Receive Sensitivity: 2.0 µV for 6 dB S/N with 1 kHz 30% mod.
  • Squelch Sensitivity: 2.0 µV typical
  • Audio Output: 100 mW minimum into a 500 ohm load; External amplifier required to drive cockpit speaker
  • VHF COMM: TSO C37d, Class 4 and 6 (transmit); TSO C37d, Class 3 and 5 (transmit) - 420 "A" and TSO C38d, Class C and E (receive)

Specifications are subject to change without notice.