PRODUCT
	INFORMATION
	PAGE

GNC 420

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: Identifier, reference VOR, frequency, usage

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

SIDs/STARs: Contains all pilot/nav SIDs/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; 2 nearest FSS and ARTCC frequencies

Alarms: Arrival; timers; airspace alarms at 10 minutes, 2nm, and inside SUA

User Customization

Waypoints: 1,000 User Defined

Flight Plans: 20 reversible routes of up to 31 waypoints each

VHF COM 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: 10 watts (minimum)

Modulation: 70% (minimum)

Receive Sensitivity: 2.0 microvolts (hard) for 6 dB S/N with 1 kHz 30% mod.

Squelch Sensitivity: 2.0 microvolts (hard) typical

Audio Output: 100 mW (minimum) into a 500 ohm load; External speaker amplifier required

Certifications

GPS: TSO C129a A1

VHF COM: TSO C37d, Class 4 and 6 (transmit) and TSO C38d, Class C and E (receive)

GPS Performance

Receiver: 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*, 1-5 meters with differential corrections
• Velocity: 0.1 knot RMS steady state


Dynamics:


• Velocity: 999 knots
  
• Acceleration: 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 SIDs/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 (Gillham/Greycode and serial), Fuel Sensor, Fuel/Air Data

Map Datums: 124 and 1 user-defined

Physical Specifications

Unit Size: Width = 6.25"; Height = 2.65"; Depth = 11.00" behind panel, with connectors

Unit Weight: 6.6 pounds installed

Display: Color LCD

Power: 11-33 VDC

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