Garmin GNC 420W Pilot's Manual Addendum
400w/500w series
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Also See for GNC 420W:
- Pilot's manual addendum (24 pages) ,
- Quick reference (23 pages) ,
- Supplementary manual (12 pages)
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Summary of Contents for Garmin GNC 420W
- Page 1 400W / 500W Series Garmin Optional Displays Pilot’s Guide Addendum For: • GDL 69/69A XM Satellite Datalink • GTX 330/330D TIS • Garmin TAWS (GPS 500W & GNS 530W)
- Page 2 Except as expressly provided herein, no part of this addendum may be reproduced, copied, transmitted, disseminated, downloaded, or stored in any storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permis- sion to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium...
- Page 3 Warnings and Cautions WARNING: Terrain data is obtained from third party sources. Garmin is not able to independently verify the accuracy of this data which should be used only as an aid for situational awareness. Terrain data must not be used as the sole basis for deci- sions or maneuvers to avoid terrain or obstacles.
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Page 4: Table Of Contents
Overview ...27 Operating Criteria ...27 GPS Position and GPS-MSL Altitude...27 TAWS Alerting using the GPS Position/GPS-MSL Altitude...27 Baro-Corrected Altitude verses GPS-MSL Altitude...27 Premature Descent Alerting (PDA) using GPS-MSL Altitude ...28 Limitations...28 Section 2: TAWS Operation...29 Requirements ...29 Limitations...29 TAWS Alerting Using the GPS Position/GPS-MSL Altitude ...29 Baro-Corrected Altitude Versus GPS-MSL Altitude ...29... -
Page 5: Part One: Traffic Information Service (Tis) Interface
TIS Traffic display is available to aircraft equipped with a Mode S Data Link such as the Garmin GTX 330 Transponder. TIS Traffic from a GTX 330 Transpon- der can then be displayed on a Garmin 400W/500W Series unit. -
Page 6: How Tis Differs From Tcas
The range accuracy of TIS and TCAS is similar. TIS Limitations NOTE: This section on TIS Limitations is not compre- hensive. Garmin recommends the user review the TIS Limitations section of the Aeronautical Information Manual, Section 1-3-5. TIS is NOT intended to be used as a collision avoidance system and does not relieve the pilot of responsibility to “see and avoid”... -
Page 7: Improving Tis
and avoid.” Some of the more common examples of these errors follow: • When client or intruder aircraft maneuvers exces- sively or abruptly, the tracking algorithm may report incorrect horizontal position until the maneuvering aircraft stabilizes. • When a rapidly closing intruder is on a course that crosses the client aircraft course at a shallow angle (either overtaking or head on) and either aircraft abruptly changes course within ¼... -
Page 8: Tis Symbology
Part One: Section 1 TIS Operation and Symbology TIS Symbology TIS traffic is displayed on the 400W/500W Series unit according to TCAS symbology, graphically displayed on a dedicated graphical page (Traffic Page; see below), and on the moving Map Page. A Traffic Advisory (TA) symbol appears as a solid yellow circle (or half circle on the outer range ring if the traffic is outside the range of the dedicated Traffic Page). -
Page 9: Section 2: Control And Display
Section 2: Control and Display TIS Traffic Display Status and Pilot Response • STBY — When the 400W/500W displays STBY in the upper right hand corner of the display the TIS system is in standby mode and cannot display traffic data. •... -
Page 10: Traffic Page
Part One: Section 2 TIS Controls and Display Traffic Ground Track Traffic ground track is indicated in the 400W/500W display by a “target track vector”, a short line displayed in 45-degree increments, extending in the direction of target movement. Traffic Target Track Vector. Traffic Warning Window When the unit is on any page (other than the NAV Traffic Page or when a TAWS/Terrain, or Dead... -
Page 11: Map Page
Map Page TIS traffic is displayed on the Map Page in addition to the Traffic Page. The Map Page displaying traffic. Configuring TIS Traffic Data on the Map Page To configure TIS traffic on the Map Page: Turn the small right knob to select the Map Page. -
Page 12: Highlighting Tis Traffic Using Map Page Panning
Part One: Section 2 TIS Controls and Display Highlighting TIS Traffic Using Map Page Panning Another Map Page feature is panning, which allows you to move the map beyond its current limits without adjusting the map scale. When you select the panning function —... -
Page 13: Section 3: Tis Operational Procedures
Section 3: TIS Operational Procedures Introduction TIS warns the user with voice and visual traffic advisories whenever it predicts an intruder to be a threat (see illustration). Voice and visual data is sent from the GTX 330. The user should not start evasive maneuvers using information from the 400W/500W display or on a traffic advisory only. -
Page 14: Manual Override
Part One: Section 3 TIS Operational Procedures Manual Override The user can manually switch between standby (STBY) and operating (OPER) mode of operation to manually override automatic operation. To place the display into operating mode from the standby mode (to display TIS traffic): Turn the cursor on and highlight “STBY”. -
Page 15: Part Two: Xm Radio
IDs. Weather and/or audio data from your GDL 69/69A are provided by XM Satellite Radio, a company separate and independent from Garmin Corporation. Have your radio hardware IDs ready before contact- ing XM Satellite Radio. During the process, you can select services for subscription. -
Page 16: Xm Wpt Pages
Part Two: Section 2 XM Weather XM WPT Pages When a GDL 69 or GDL 69A is installed, two XM- related pages are added to “airport” pages in the WPT page group: • Textual METAR Page. The Textual METAR page shows the text of the most recent METAR (Meteorological Aerodrome Report) that has been received for an airport. -
Page 17: Xm Nexrad Weather
• Graphical METARs. The MX Weather page (in the NAV page group) can show colored flags to indicate the level of current weather condi- tions at those airports for which textual METAR reports are available. The flags are color-coded to indicate the severity of the current weather at the airport: cyan for VFR conditions, green for Marginal VFR conditions, yellow for IFR condi- tions, or magenta of Low IFR conditions. -
Page 18: Nexrad Intensity
Part Two: Section 2 XM Weather is “METAR” (rather than “NEXRAD”), press the small right (CRSR) knob to highlight that word. Then turn the small right knob to change “METAR” to “NEXRAD.” Press the small right knob again to bring down the cursor (that is, to stop the blinking highlighting of “NEXRAD”) and retain the selection. -
Page 19: Nexrad Limitations
NEXRAD Limitations Certain limitations exist regarding the NEXRAD radar displays. Some, but not all, are listed for the user’ s awareness: • NEXRAD base reflectivity does not provide suf- ficient information to determine cloud layers or precipitation characteristics (hail vs. rain, etc). •... -
Page 20: Textual Metar Page
Part Two: Section 2 XM Weather XM Weather METAR Symbols VFR - Ceiling > 3000 ft and visibility > 5 statute miles MVFR (Marginal VFR) - Ceil- ing 1000 to 3000 ft, and/or visibility 3 to 5 statute miles IFR - Ceiling 500 to 1000 ft, and/or visibility 1 to 3 statute miles LIFR (Low IFR) - Ceiling less... -
Page 21: Taf Page
To view any airport’s Textual METAR page: If not viewing the WPT page group, press CLR and turn the large right knob to select the WPT page group. Turn the small right knob until the Textual METAR page appears. To select another airport, press the small right (CRSR) knob to highlight the airport ID (in the “APT”... -
Page 22: Tfr Information
Part Two: Section 2 XM Weather TFR Information Areas with TFRs (Temporary Flight Restrictions) are shown outlined in yellow on the NAV main page of the 500W-series and on the Map and XM Weather page of both the 400W and 500W-series. More information about Temporary Flight Restrictions can be seen on the TFR Information page, which can be accessed from the Map page or the XM Weather page. -
Page 23: Section 3: Xm Aux Pages
NOTE: The full text of the NOTAM may be obtained from a local FSS or from the FAA web site, using the contents of this field as a reference to locate the particular NOTAM. However, the information shown on the TFR Information page is sufficient to let you comply with the Temporary Flight Restriction by avoiding the affected area. -
Page 24: Xm Wx Timestamps
Part Two: Section 3 XM Aux Pages audio ID, because the GDL 69 is a data-only receiver.) • Audio Signal. The Audio Signal field indicates the signal strength of the GDL 69A’ s audio signal. (In the case of a GDL 69, this field shows “antenna”... -
Page 25: Section 4: Xm Audio
Section 4: XM Audio Audio entertainment is available through the XM Satellite Radio Service when activated in the optional installation of the GDL 69A. The 400W and 500W series units serve as the display and control head for your remotely mounted GDL 69A. XM Satellite Radio allows you to enjoy a variety of radio programming over long distances without having to constantly search for new stations. - Page 26 Part Two: Section 4 XM Audio Selecting categories Press the small right (CRSR) knob to high- light the category names. The categories will be listed below in numeric order. Turn the small right knob to scroll through the list of categories. Categories are shown in the upper section of the display.
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Page 27: Xm Audio Menu
XM Audio Menu The XM Audio Menu provides choices for selecting a channel, displaying the channel, artist, or title, enabling audio output, and controlling the volume. While viewing the XM Audio page, press the MENU key. Turn the large or small right knobs to high- light the choices. -
Page 28: Enter Channel Number
Part Two: Section 4 XM Audio Enter Channel Number You may directly select a specific channel by using the “Enter Channel Number” item from the Page Menu. While viewing the XM Audio page, press the MENU key. Turn the large right knob to highlight “Enter Channel Number.”... -
Page 29: Display Artist In List
Display Artist In List The name of the artists in the range of displayed channels can be shown in the middle pane by using the “Display Artist In List” item from the Page Menu. While viewing the XM Audio page, press the MENU key. -
Page 30: Enable/Mute Audio Output
Part Two: Section 4 XM Audio Enable/Mute Audio Output The Enable/Mute Audio Output selection of the Page Menu allows you to toggle the audio output On or Off. When Audio Output is muted, a green slash will cross over the music symbol in the song pane. While viewing the XM Audio page, press the MENU key. -
Page 31: Part Three: Taws Interface
Garmin TAWS utilizes terrain and obstacle databases that are referenced to Mean Sea Level (MSL). Using the GPS Position and GPS-MSL Altitude, Garmin TAWS portrays a 2D picture of the surrounding terrain and obstacles relative to the position and altitude of the aircraft. Furthermore, the GPS Position and GPS-MSL Altitude are used to calculate and “predict”... -
Page 32: Premature Descent Alerting (Pda) Using Gps-Msl Altitude
TAWS uses terrain and obstacle information sup- plied by government sources. The data undergoes veri- fication by Garmin to confirm accuracy of the content, per TSO-C151b. However, the displayed information should never be understood as being all-inclusive. -
Page 33: Section 2: Taws Operation
TAWS uses terrain and obstacle information sup- plied by government sources. The data undergoes veri- fication by Garmin to confirm accuracy of the content, per TSO-C151b. However, the displayed information should never be understood as being all-inclusive. -
Page 34: Power Up
TAWS Operation lapse rates have fixed values), it is common for the baro-corrected altitude (as read from the altimeter) to differ from the GPS-MSL altitude. This variation results in the aircraft’ s true altitude differing from the baro-corrected altitude. Power Up... -
Page 35: Inhibit Mode
To change the display range: Select the TAWS Page and press up or down on the RNG key to select the desired range: 1 NM, 2 NM, 5 NM, 10 NM, 25 NM, 50 NM, 100 NM. Aviation information such as airports, VORs, and other navaids can be turned on or off on the TAWS Page. -
Page 36: Taws Manual Test
Part Three: Section 2 TAWS Operation TAWS Manual Test Garmin TAWS provides a manual test capability which verifies the proper operation of the aural and visual annunciations of the system prior to a flight. “Test Terrain” selection To manually test the TAWS system: Select the TAWS Page and press MENU. -
Page 37: Color Interpretation
Color Interpretation Garmin TAWS uses black, yellow, and red to depict terrain information relative to aircraft altitude as shown below. Each color is associated with an alert severity level and a suggested course of action. Color assignments are used by terrain graphics, obstacle symbols, and visual annunciations. -
Page 38: General Database Information
Database Updates Terrain/obstacle databases are updated periodi- cally with the latest terrain and obstacle data. Visit the Garmin website to check for newer versions of terrain/ obstacle databases. Compare database cycle numbers to determine if a newer version is available. -
Page 39: Terrain/Obstacle Database Areas Of Coverage
TAWS Operation Navigation Database As explained in the “Premature Descent Alerting (PDA)” section, Garmin TAWS Premature Descent Alerting (PDA) algorithms utilize data contained in the navigation database. It is therefore important to also have the latest navigation database installed to ensure correct TAWS alerting. -
Page 40: Nearest Airport Criteria & Taws Phase Of Flight
Part Three: Section 3 TAWS Alerts Departure Phase - Defined as when all five of the following conditions are met: • It has been determined that the aircraft was previously “on-ground.” • The aircraft has a vertical velocity greater than zero. -
Page 41: Section 3: Taws Alerts
Section 3: TAWS Alerts Alerts are issued when flight conditions meet parameters that are set within TAWS software algorithms. TAWS alerts typically employ either a CAUTION or a WARNING alert severity level, or both. When an alert is issued, visual annunciations are displayed. -
Page 42: Premature Descent Alerting (Pda)
Part Three: Section 3 TAWS Alerts WARNING—Estimated potential impact in approximately 30 seconds after pop-up alert and annunciation. RTC/ITI warning alerts are accompanied by the aural message “Terrain, Terrain; Pull Up, Pull Up” or “Terrain Ahead, Pull Up; Terrain Ahead, Pull Up”. -
Page 43: Excessive Descent Rate Alert (Edr)
PDA Severity Levels CAUTION — The above annunciation and pop-up terrain alert are displayed during a PDA alert. For TAWS, the PDA alert is accompanied by the aural message “Too Low, Terrain”. Excessive Descent Rate Alert (EDR) The purpose of the Excessive Descent Rate alert is to provide suitable notification when the aircraft is determined to be closing (descending) upon terrain at an excessive speed. -
Page 44: Negative Climb Rate After Takeoff Alert (Ncr)
Part Three: Section 3 TAWS Alerts WARNING—The annunciation and pop-up terrain alert are accompanied by the aural message “Pull Up”. Negative Climb Rate After Takeoff Alert (NCR) The purpose of the Negative Climb Rate After Takeoff alert (also referred to as “Altitude Loss After Takeoff”) is to provide suitable alerts to the pilot when the system determines that the aircraft is losing altitude (closing upon terrain) after takeoff. -
Page 45: Five-Hundred" Aural Alert
Part Three: Section 3 TAWS Alerts TAWS Not Available Alert Garmin TAWS requires a 3-D GPS navigation solu- tion along with specific vertical accuracy minimums. Should the navigation solution become degraded, or if the aircraft is out of the database coverage area, the annunciation “TER N/A”... - Page 46 Appendix A TAWS Alerts TAWS Page Alert Type Annunciation TAWS System Failure Terrain Inhibited Terrain Not Available Excessive Descent Rate (EDR) Caution Excessive Descent Rate (EDR) Warning Required Terrain Clearance (RTC) Caution Required Terrain Clearance (RTC) Warning Imminent Obstacle Impact (IOI) Caution Imminent Terrain Impact (ITI) Warning Required Obstacle Clearance (ROC) Caution...
- Page 47 TAWS Page Alert Type Annunciation Imminent Terrain Impact (ITI) Caution Imminent Obstacle Impact (IOI) Warning Premature Descent Alert (PDA) Caution Negative Climb Rate (NCR) Caution Altitude Callout “500” NOTE: TAWS Caution Alerts are displayed as constant black text on a yellow background; TAWS Warning Alerts are displayed as constant white text on a red background.
- Page 48 Appendix A Blank Page...
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