Pilots Guide
Page 5
... Traffic Systems 11-11 11.3 Weather Data Link Interface 11-18 SECTION 12: FAULT DETECTION AND EXCLUSION 12-1 12.1 Detection and Exclusion 12-1 12.2 Pre-Departure Verification of FDE 12-2 SECTION 13: MESSAGES, ABBREVIATIONS, AND NAV TERMS 13-1 13.1 Messages 13-1 13.2 Abbreviations 13-8 13.3 Navigation Terms 13-11 Appendix A: Data Card Use A-1 Appendix B: Specifications B-1 Appendix C: Troubleshooting Q & A C-1 190-00140-20 Rev. K GNC 420(A) Pilot's Guide and Reference...
... Traffic Systems 11-11 11.3 Weather Data Link Interface 11-18 SECTION 12: FAULT DETECTION AND EXCLUSION 12-1 12.1 Detection and Exclusion 12-1 12.2 Pre-Departure Verification of FDE 12-2 SECTION 13: MESSAGES, ABBREVIATIONS, AND NAV TERMS 13-1 13.1 Messages 13-1 13.2 Abbreviations 13-8 13.3 Navigation Terms 13-11 Appendix A: Data Card Use A-1 Appendix B: Specifications B-1 Appendix C: Troubleshooting Q & A C-1 190-00140-20 Rev. K GNC 420(A) Pilot's Guide and Reference...
Pilots Guide
Page 6
... to changes which could vary significantly from the altitude displayed by pressure altimeters in aircraft. WARNING: The altitude calculated by GNC 420 GPS receivers is solely responsible for situational awareness. WARNING: The basemap (land and water data) must not be used only as with other navigation sources. Therefore, as an aid for its information remains current. iv GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. Terrain data must...
... to changes which could vary significantly from the altitude displayed by pressure altimeters in aircraft. WARNING: The altitude calculated by GNC 420 GPS receivers is solely responsible for situational awareness. WARNING: The basemap (land and water data) must not be used only as with other navigation sources. Therefore, as an aid for its information remains current. iv GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. Terrain data must...
Pilots Guide
Page 7
... regulations. K GNC 420(A) Pilot's Guide and Reference v Thoroughly practice basic operation prior to cause cancer, birth defects, or reproductive harm. For safety purposes, always resolve any user-serviceable parts. CLEANERS CONTAINING AMMONIA WILL HARM THE ANTI-REFLECTIVE COATING. Please, note that is coated with California's Proposition 65. WARNINGS, CAUTIONS, AND NOTES WARNING: Use the GNC 420, Weather Data Link Interface, TIS, and TERRAIN at www.garmin.com/prop65...
... regulations. K GNC 420(A) Pilot's Guide and Reference v Thoroughly practice basic operation prior to cause cancer, birth defects, or reproductive harm. For safety purposes, always resolve any user-serviceable parts. CLEANERS CONTAINING AMMONIA WILL HARM THE ANTI-REFLECTIVE COATING. Please, note that is coated with California's Proposition 65. WARNINGS, CAUTIONS, AND NOTES WARNING: Use the GNC 420, Weather Data Link Interface, TIS, and TERRAIN at www.garmin.com/prop65...
Pilots Guide
Page 9
... about the installation, such as location of the GNC 420 available and connect to -use avionics. Standard Package: • GNC 420 Unit • NavData® Card • Terrain Data Card • Installation Rack • Connectors • GPS Antenna • Pilot's Guide • Quick Reference Guide • 400/500-series Display Interface Pilot's Guide Addendum • Database Subscription Packet • Warranty Registration Card • GNC 420 Simulator CD-ROM The Garmin dealer installs and configures the GNC 420. Look for lost or stolen unit tracking. garmin.com...
... about the installation, such as location of the GNC 420 available and connect to -use avionics. Standard Package: • GNC 420 Unit • NavData® Card • Terrain Data Card • Installation Rack • Connectors • GPS Antenna • Pilot's Guide • Quick Reference Guide • 400/500-series Display Interface Pilot's Guide Addendum • Database Subscription Packet • Warranty Registration Card • GNC 420 Simulator CD-ROM The Garmin dealer installs and configures the GNC 420. Look for lost or stolen unit tracking. garmin.com...
Pilots Guide
Page 11
... listed above. Used to Key - K GNC 420(A) Pilot's Guide and Reference 1-3 The large right knob is active. ` 190-00140-20 Rev. SECTION 1 INTRODUCTION Left-hand Keys and Knobs (1) COM Power/Volume Knob - Controls unit power and communications radio volume. Press momentarily to approve an operation or complete data entry. Used to disable automatic squelch control. (2) COM Flip-flop Key - Press this knob momentarily to display the on -screen cursor enabled...
... listed above. Used to Key - K GNC 420(A) Pilot's Guide and Reference 1-3 The large right knob is active. ` 190-00140-20 Rev. SECTION 1 INTRODUCTION Left-hand Keys and Knobs (1) COM Power/Volume Knob - Controls unit power and communications radio volume. Press momentarily to approve an operation or complete data entry. Used to disable automatic squelch control. (2) COM Flip-flop Key - Press this knob momentarily to display the on -screen cursor enabled...
Pilots Guide
Page 13
... available as needed , Garmin's Customer Service staff is designed to provide a brief introduction of the NAV Page Group. Sections 2 through 12 of this Pilot's Guide includes: • Flight plan features - Section 7 • Unit settings (configuring the unit to • Selecting IFR procedures • Using some suggested reading within this manual describe these sections, as part of the GNC 420's major features. Powering up the unit • Changing frequencies • Entering data •...
... available as needed , Garmin's Customer Service staff is designed to provide a brief introduction of the NAV Page Group. Sections 2 through 12 of this Pilot's Guide includes: • Flight plan features - Section 7 • Unit settings (configuring the unit to • Selecting IFR procedures • Using some suggested reading within this manual describe these sections, as part of the GNC 420's major features. Powering up the unit • Changing frequencies • Entering data •...
Pilots Guide
Page 19
... safe altitude, estimated time of the map (based upon a direct course from the present position to waypoint (DIS), desired track (DTK), and ground speed (GS) appear on the right-hand side of the waypoint identifier (Figure 1-16). These settings provide an automatic decluttering of arrival, minimum safe altitude, and ground track. K GNC 420(A) Pilot's Guide and Reference 1-11 These fields are user selectable (Section 3.4, Selecting Desired On-screen Data...
... safe altitude, estimated time of the map (based upon a direct course from the present position to waypoint (DIS), desired track (DTK), and ground speed (GS) appear on the right-hand side of the waypoint identifier (Figure 1-16). These settings provide an automatic decluttering of arrival, minimum safe altitude, and ground track. K GNC 420(A) Pilot's Guide and Reference 1-11 These fields are user selectable (Section 3.4, Selecting Desired On-screen Data...
Pilots Guide
Page 87
... the pilot fly an existing procedure (VOR, VOR/DME, NDB, RNAV, etc.) more accurately using the 'Activate Approach?' Later, if vectored to the FAF waypoint active. Approaches designed specifically for GPS are intended for navigation. 190-00140-20 Rev. Approaches may be flown with vectors to final: 1) Press the PROC Key to display the Procedures Page. 2) Turn the large right knob to GPS-only approaches). The GPS receiver...
... the pilot fly an existing procedure (VOR, VOR/DME, NDB, RNAV, etc.) more accurately using the 'Activate Approach?' Later, if vectored to the FAF waypoint active. Approaches designed specifically for GPS are intended for navigation. 190-00140-20 Rev. Approaches may be flown with vectors to final: 1) Press the PROC Key to display the Procedures Page. 2) Turn the large right knob to GPS-only approaches). The GPS receiver...
Pilots Guide
Page 149
... 9-1 Page Groups SECTION 9 AUX PAGES Quickly selecting an AUX page: 1) From any of the screen. See Section 11 of this step may have five AUX pages available when the GNC 420 installation includes connection to a weather information source. Figure 9-3 Flight Planning Page 3) Turn the small right knob to change unit settings. K GNC 420(A) Pilot's Guide and Reference 9-1 If any page, press and hold the CLR Key to select...
... 9-1 Page Groups SECTION 9 AUX PAGES Quickly selecting an AUX page: 1) From any of the screen. See Section 11 of this step may have five AUX pages available when the GNC 420 installation includes connection to a weather information source. Figure 9-3 Flight Planning Page 3) Turn the small right knob to change unit settings. K GNC 420(A) Pilot's Guide and Reference 9-1 If any page, press and hold the CLR Key to select...
Pilots Guide
Page 151
...-series Garmin units in a dual-unit installation. One-time, periodic, and event-based messages are available: • Fuel Planning - One-time messages appear once the timer expires and reappear each time the GNC 420 is powered on, until the message is current GPScalculated ground speed) entered on board (FOB) sensors, this option displays current fuel conditions along the active direct-to the original timer value, once the message is displayed. Allows the pilot to view...
...-series Garmin units in a dual-unit installation. One-time, periodic, and event-based messages are available: • Fuel Planning - One-time messages appear once the timer expires and reappear each time the GNC 420 is powered on, until the message is current GPScalculated ground speed) entered on board (FOB) sensors, this option displays current fuel conditions along the active direct-to the original timer value, once the message is displayed. Allows the pilot to view...
Pilots Guide
Page 157
... messages 'data transfer error' or 'data transfer cancelled' are set for manual crossfill, then only the auto unit automatically sends data to select 'Auto' or 'Manual' (Figure 9-23). 'Auto' automatically transfers any change in the other. Turn the small right knob to the manual unit. Turn the small right knob to a second 400/500-series Garmin unit. Figure 9-24 Transfer Field Highlighted 190-00140-20 Rev. When a unit is desired, the pilot must force another transfer. Transferring flight plans or user waypoints to a waypoint...
... messages 'data transfer error' or 'data transfer cancelled' are set for manual crossfill, then only the auto unit automatically sends data to select 'Auto' or 'Manual' (Figure 9-23). 'Auto' automatically transfers any change in the other. Turn the small right knob to the manual unit. Turn the small right knob to a second 400/500-series Garmin unit. Figure 9-24 Transfer Field Highlighted 190-00140-20 Rev. When a unit is desired, the pilot must force another transfer. Transferring flight plans or user waypoints to a waypoint...
Pilots Guide
Page 175
... the Airspace Alarms Page displayed, the 'Restore Defaults?' Selecting a menu option from the Setup 1 Page, using the steps described at the beginning of Current Page within Current Page Group Figure 9-69 Date/Time Page Menu 3) With 'Restore Defaults?' K GNC 420(A) Pilot's Guide and Reference 9-27 SECTION 9 AUX PAGES Restoring Factory Settings When making changes to restore the original factory settings (for the selected option only). menu selection...
... the Airspace Alarms Page displayed, the 'Restore Defaults?' Selecting a menu option from the Setup 1 Page, using the steps described at the beginning of Current Page within Current Page Group Figure 9-69 Date/Time Page Menu 3) With 'Restore Defaults?' K GNC 420(A) Pilot's Guide and Reference 9-27 SECTION 9 AUX PAGES Restoring Factory Settings When making changes to restore the original factory settings (for the selected option only). menu selection...
Pilots Guide
Page 191
... this manual to earlier or later software versions. Refer to the 400/500 Series Display Interfaces Pilot's Guide Addendum (190-00140-10) when interfacing with the GTX 330 Mode S Transponder and a GDL 49 or GDL 69(A) Data Link Satellite Receiver. Avoidance maneuvers are configured with nonGarmin products. TIS is not intended to replace the documentation that are invisible to assist in visual acquisition of aircraft tracked by ATC radar within a specified service volume. Operation of...
... this manual to earlier or later software versions. Refer to the 400/500 Series Display Interfaces Pilot's Guide Addendum (190-00140-10) when interfacing with the GTX 330 Mode S Transponder and a GDL 49 or GDL 69(A) Data Link Satellite Receiver. Avoidance maneuvers are configured with nonGarmin products. TIS is not intended to replace the documentation that are invisible to assist in visual acquisition of aircraft tracked by ATC radar within a specified service volume. Operation of...
Pilots Guide
Page 222
... field shows the currently installed software version for the GDL 49. 11-32 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. K This field shows the serial number assigned to the satellite. Shows the number of responses in view and also indicates the status of the Data Link. Shows the current satellite in the GDL 49's receive queue waiting to be displayed, including interpretations of a failure. SAT ID/CONNECTIVITY FIELD MESSAGE...
... field shows the currently installed software version for the GDL 49. 11-32 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. K This field shows the serial number assigned to the satellite. Shows the number of responses in view and also indicates the status of the Data Link. Shows the current satellite in the GDL 49's receive queue waiting to be displayed, including interpretations of a failure. SAT ID/CONNECTIVITY FIELD MESSAGE...
Pilots Guide
Page 230
... the message persists, contact a Garmin dealer for service. K MESSAGES, ABBREVIATIONS, & NAV TERMS Message Description Approaching VNAV profile The aircraft is defined from the 'CDI/alarms' menu option on the Setup 1 Page. A waypoint can be returned to ' or 'from ' waypoint. Can't change an active waypoint An attempt has been made to delete the active 'to a Garmin dealer for assistance. 13-2 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. Can't delete an active An attempt...
... the message persists, contact a Garmin dealer for service. K MESSAGES, ABBREVIATIONS, & NAV TERMS Message Description Approaching VNAV profile The aircraft is defined from the 'CDI/alarms' menu option on the Setup 1 Page. A waypoint can be returned to ' or 'from ' waypoint. Can't change an active waypoint An attempt has been made to delete the active 'to a Garmin dealer for assistance. 13-2 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. Can't delete an active An attempt...
Pilots Guide
Page 231
... database. This message occurs each time a flight plan containing a modified procedure (generated from a prior database version) is complete before attempting the transfer again. Additional cross-checking using another navigation source is not available. If the message persists, contact a Garmin dealer for adequate ventilation or check cooling air flow. If necessary, update the database(s) so they match. The data transfer should be used for navigation The GNC 420 is replaced (database update), manually verify the changes...
... database. This message occurs each time a flight plan containing a modified procedure (generated from a prior database version) is complete before attempting the transfer again. Additional cross-checking using another navigation source is not available. If the message persists, contact a Garmin dealer for adequate ventilation or check cooling air flow. If necessary, update the database(s) so they match. The data transfer should be used for navigation The GNC 420 is replaced (database update), manually verify the changes...
Pilots Guide
Page 233
... problem persists, the installation should be checked by a Garmin dealer. Failure to a Garmin dealer for service. Select Need altitude - Not receiving input No data has been received on the ARINC 429 channel 1 connection for a 3D position fix (provided no RAIM warnings are present). If the altitude is not usable and should be taken to MAP) of a special use airspace boundary, but the aircraft is possible, the pilot should be replaced by entering the altitude...
... problem persists, the installation should be checked by a Garmin dealer. Failure to a Garmin dealer for service. Select Need altitude - Not receiving input No data has been received on the ARINC 429 channel 1 connection for a 3D position fix (provided no RAIM warnings are present). If the altitude is not usable and should be taken to MAP) of a special use airspace boundary, but the aircraft is possible, the pilot should be replaced by entering the altitude...
Pilots Guide
Page 234
... flight. Scheduler message -- The OBS Key should be set to abnormal satellite conditions. MESSAGES, ABBREVIATIONS, & NAV TERMS Message Description Poor GPS coverage The GPS receiver cannot acquire a sufficient number of navigation may RAIM position warning be pressed again to complete data collection (approximately five minutes) before turning it off and back on course, 2) the turn anticipation distance exceeds 90 seconds. 13-6 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. The user-entered scheduler message time...
... flight. Scheduler message -- The OBS Key should be set to abnormal satellite conditions. MESSAGES, ABBREVIATIONS, & NAV TERMS Message Description Poor GPS coverage The GPS receiver cannot acquire a sufficient number of navigation may RAIM position warning be pressed again to complete data collection (approximately five minutes) before turning it off and back on course, 2) the turn anticipation distance exceeds 90 seconds. 13-6 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. The user-entered scheduler message time...
Pilots Guide
Page 235
... The hardware configuration does not match the terrain software configuration. The operational status of the terrain components is All 1000 user waypoint locations in the GNC 420's memory have been replaced One or more user waypoints were updated during initial power up) in its system configuration. Waypoint(s) have been used. User card format unknown A data card has been inserted, but the format of TERRAIN related Alerts and Annunciations. MESSAGES, ABBREVIATIONS, & NAV TERMS Message Description Stored data was lost All user waypoints, flight plans, and system settings...
... The hardware configuration does not match the terrain software configuration. The operational status of the terrain components is All 1000 user waypoint locations in the GNC 420's memory have been replaced One or more user waypoints were updated during initial power up) in its system configuration. Waypoint(s) have been used. User card format unknown A data card has been inserted, but the format of TERRAIN related Alerts and Annunciations. MESSAGES, ABBREVIATIONS, & NAV TERMS Message Description Stored data was lost All user waypoints, flight plans, and system settings...
Pilots Guide
Page 238
... Coordinated Universal Time (also GMT or Zulu) VAR Variation VER Version VFR Visual Flight Rules VNAV Vertical Navigation VOL Volume VOR VHF (Very High Frequency) Omnidirectional Radio Range VS Vertical Speed VSR Vertical Speed Required °T TACAN TAS TAT TEMP TERM TKE 13-10 Degree True Tactical Air Navigation True Airspeed Total Air Temperature Temperature Terminal Track Angle Error WPT WX XTK Waypoint Weather Crosstrack Error GNC 420(A) Pilot's Guide and Reference...
... Coordinated Universal Time (also GMT or Zulu) VAR Variation VER Version VFR Visual Flight Rules VNAV Vertical Navigation VOL Volume VOR VHF (Very High Frequency) Omnidirectional Radio Range VS Vertical Speed VSR Vertical Speed Required °T TACAN TAS TAT TEMP TERM TKE 13-10 Degree True Tactical Air Navigation True Airspeed Total Air Temperature Temperature Terminal Track Angle Error WPT WX XTK Waypoint Weather Crosstrack Error GNC 420(A) Pilot's Guide and Reference...
