Garmin GTN 635 User Manual

Traffic
Terrain
Weather
Procedures
Waypoint Info
Nearest
System
Services
Utilities
GTN 625/635/650
Pilot's Guide
Flight Plan
Map

Garmin GTN 635 Specifications

General

Display Resolution	800 x 480 pixels
Display Type	LCD
COM Channels	2
Bluetooth	Yes
Wi-Fi	No
Audio Panel Interface	Yes
GPS Receiver	WAAS-enabled
Weight	1.2 lbs
Dimensions	6.25 inches
Power Consumption	15 W
Database	Jeppesen

Summary

Getting Started

Product Description

System Operation

Explains how to use touchscreen key controls and manage system settings via the System page.

Selecting Com/Nav Frequencies

Flight Planning

Explains how to create, store, edit, and copy flight plans, including waypoint options.

Audio and Transponder Controls (Optional)

Transponder Operation

Details how the GTN 6XX operates as a control head for compatible transponders.

NAV/COM

Com and Nav Frequency Window and Tuning

Describes how to select frequencies using small/large knobs or the numeric keypad.

Nav (VOR/Localizer/Glideslope) Receiver Operations

FLIGHT PLANS

Creating a New Flight Plan

Step-by-step guide on how to create a new flight plan by adding waypoints and storing it.

Active Flight Plan Page

Provides information and editing functions for the flight plan currently in use for navigation.

Flight Plan Menu

DIRECT-TO

Direct-To Navigation

Explains how to set a course to any waypoint from the present position or flight plan.

Direct-To a Flight Plan Waypoint

Direct-To a Nearest Airport

PROCEDURES

Basic Approach Operations

Covers lateral and vertical guidance for visual and GPS/RNAV approaches, and phase of flight annunciations.

Selecting a Departure

Selecting an Arrival

Selecting an Approach

Guides the pilot on selecting an approach for the destination airport, including transition and runway.

Flying the Missed Approach

ILS Approaches (GTN 650 Only)

RNAV Approach Procedures

Covers flying LNAV/VNAV, LNAV, LNAV+V, LPV, LP, and LP+V approaches according to the chart.

Flying the LPV Approach

Flying the LP Approach

Points to Remember for All Procedures

Provides crucial reminders for flying all procedures, including map page usage and autopilot interaction.

WAYPOINT INFO

Waypoint Selection

Guides the user on selecting waypoint types like Airport, INT, VOR, and using the keypad for identification.

Airport

Weather (WX) Data

User Waypoints

Allows storing up to 1,000 user-defined waypoints, displaying name, location, and elevation.

Select User Waypoint by Name

Edit User Waypoint

Delete User Waypoint

Create Waypoint

Explains how to create new user waypoints by entering name, position, or reference.

Waypoint Location Based on LAT/LON

MAP

Map Menu

Explains how to modify and control information displayed on the Map page via the Map Menu.

Map Overlays

Terrain

Map Setup

Covers customizing map features through groups like Map, Aviation, Land, Airspace, Traffic, and Weather.

Map

Traffic (Optional)

Change User Fields

Allows configuring data fields in the corners of the Map page, selecting from a list of information types.

Map Panning

Map Controls

Covers controls for managing map view and information display, including In/Out keys and Pan Mode.

Create Waypoint

Graphically Edit Flight Plan Mode

Allows making quick changes to the active flight plan directly on the display by dragging legs.

CDI (GTN 650 only)

Map Symbols

SafeTaxi®

Details the enhanced feature providing greater airport detail, including runways and taxiways.

Using SafeTaxi®

Flight Plan Depiction

TRAFFIC

Traffic Pop-Up

Describes the traffic warning pop-up that appears on pages other than Traffic when an alert occurs.

TIS (Optional)

Details the Traffic Information Service (TIS) for advisory use in locating traffic visually.

TIS Symbology

Traffic Page

Configures the Traffic Map Page to show surrounding TIS traffic data relative to the aircraft's position.

Displaying Traffic on the Traffic Page

Guides on confirming TIS is in Operating Mode and using the Altitude Filter to limit displayed traffic.

TAS (Optional)

Details the Traffic Advisory System (TAS) which enhances situational awareness by displaying traffic information.

TAS Symbology

Displaying and Operating Traffic (TAS Systems)

Guides on switching the unit between standby and operating modes for traffic display.

Switching from Standby Mode to Operating Mode

Details how to switch between Operate and Standby modes for the TAS system.

Altitude Display

Traffic System Status

ADS-B Traffic

Explains ADS-B technology and its role in NextGen Air Transportation System.

ADS-B Traffic Menu

Explains how to control traffic information display settings like Altitude Filter and Vector Duration.

ADS-B Display

TCAS Status

Shows the current status of the TCAS system (Operate, Standby) and allows manual selection.

Motion Vector

Altitude Filter

Limits traffic displayed based on altitude modes (Below, Normal, Above, Unrestricted).

RYAN TCAD 9900BX with the GDL 88

Describes the Ryan TCAD system for traffic display and alerts, interfacing with GTN.

Ryan TCAD Description

Altitude Mode

TCAD Control Menu

Allows control over TCAD Traffic display settings like audio volume, field elevation, and modes.

Field Elevation

TCAD 9900B Operation

Covers the TCAD 9900B's active system for acquiring traffic information via transponder replies.

Select Altitude Filter

Limits traffic displayed based on altitude modes (Below, Normal, Above, Unrestricted).

TCAD 9900BX Traffic Menu

Allows control over TCAD Traffic display settings like audio volume and approach modes.

TCAS II

Explains the Traffic Alert and Collision Avoidance System II (TCAS II) for monitoring nearby airspace and resolving conflicts.

TCAS II Theory of Operation

Details how TCAS II interrogates transponders, tracks aircraft, and determines TA/RA issuance.

TCAS II with ADS-B

TCAS II Alerts

Describes the annunciations and alerts issued by TCAS II for TA and RA events, including voice alerts.

Resolution Advisories

Explains TCAS II recommended vertical guidance maneuvers (RAs) for resolving traffic conflicts.

TERRAIN

Terrain Configurations

Details available terrain awareness solutions like TAWS-A, TAWS-B, and HTAWS for situational awareness.

GPS Altitude for Terrain

Terrain Proximity

Introduces Terrain Proximity as a non-TSO-C151c system for terrain awareness and CFIT reduction.

Displaying Terrain Proximity

Guides on displaying terrain proximity on the Map and Terrain pages, including color and symbol representation.

Terrain Limitations

Terrain Alerting

Explains how terrain alerting functions increase situational awareness and reduce CFIT by providing alerts for terrain/obstacles.

Terrain Alerting Requirements

Using Terrain Alerting

Explains how terrain alerting works, including power-up self-test and display colors.

Displaying Terrain Alerting Data

Terrain Page

Explains specialized display of terrain, obstacle, and threat location data for HTAWS.

Terrain Alerting Selections

Terrain Alerts

Describes how alerts are issued based on parameters met by terrain alerting software algorithms.

Excessive Descent Rate Alert

Forward Looking Terrain Avoidance

Details RTC, RLC, ROC alerts issued when projected flight path is near terrain/obstacles.

Inhibiting/Enabling TAWS-A PDA/FLTA Alerting

Premature Descent Alerting

TAWS-A (Optional)

Introduces TAWS-A as an optional feature for situational awareness and CFIT reduction, satisfying TSO requirements.

TAWS-A Requirements

Displaying TAWS-A Data

TAWS-A Page

Explains the specialized display of terrain, obstacle, and threat location data for TAWS-A.

TAWS-A Alerts

Describes TAWS-A alerts issued when flight conditions meet algorithm parameters, including visual and aural notifications.

TAWS-A Alert Types

Lists TAWS-A alert types, including FLTA, PDA, and GPWS alerting categories.

TAWS-A Alerts Summary

Provides a summary of TAWS-A alerts, including annunciator text, pop-up alerts, and aural messages.

WEATHER

SiriusXM Weather Products (Optional)

Details SiriusXM weather products like NEXRAD, Echo Tops, and Cloud Tops available via GDL 69A.

Displaying SiriusXM Weather

Guides on displaying SiriusXM weather by navigating through Weather > Data Link > Menu.

Weather Legend

SiriusXM Product Age

NEXRAD

SIGMETs and AIRMETs

METARs

Icing

Turbulence

FIS-B Weather

Explains FIS-B weather display capabilities with GDL 88/GTX 345, noting no subscription is required.

FIS-B Operation

Guides on displaying FIS-B weather, configuring data link weather settings, and selecting NEXRAD sources.

FIS-B TFRs

NEAREST

Select a Nearest Page

Guides on selecting nearest waypoint types like Airport, VOR, and INT, and navigating the list.

Nearest Airport

Displays identifier, symbol, bearing, distance, and runway length for the 25 nearest airports.

Nearest Intersection (INT)

Nearest VOR

Nearest NDB

Nearest User Waypoint

Nearest Airspace

Alerts to controlled or special use airspaces near or in the flight path, based on proximity and time to entry.

Nearest Weather Frequency (WX Freq)

SERVICES/MUSIC

Music

Details the optional SiriusXM Radio entertainment feature, accessible via GDL 69A and controlled by GTN.

Activating SiriusXM Satellite Radio Services

Music Operation

Explains how to select music categories, channels, save presets, and manage volume levels.

Browsing Channels and Categories

SiriusXM Satellite Radio Volume

GDL 69/69A Data Link Receiver Troubleshooting

Iridium Phone Operation (Optional)

Details optional satellite telephone operation via the Iridium system and GSR 56.

Making a Phone Call

Guides on initiating a phone call by selecting a number or using the keypad.

Answering a Phone Call

Explains how to answer or ignore incoming phone calls and adjust volume.

Phone Volume

SMS Text Operation

Explains sending and receiving text messages through the GSR 56 phone connection.

SMS Text Messaging Menu

Composing a SMS Text Message

Guides on composing a new SMS text message by selecting recipient and entering text.

Position Reporting

Describes the system for collecting and transmitting system variables via Iridium satellite.

Status

Contacts

Creating a Contact

Guides on adding new contacts by entering name, phone number, and email address.

Using a Contact

UTILITIES

Vertical Calculator (VCALC)

Allows creating a 3D profile guiding from present position/altitude to a target altitude at a specified location.

Target Altitude

Vertical Speed (VS) Profile

Target Offset

Target Waypoint

Flight Timers

Provides count up/down timers, departure time, and total trip time recording.

RAIM Prediction

Predicts GPS coverage availability for current location or specified waypoint, checking satellite geometry.

Trip Planning

Allows viewing DTK, DIS, ETE, ESA, and ETA information for direct-to, point-to-point, or programmed flight plans.

Point-To-Point Mode

Shows fuel calculations between two selected points, using waypoints or present position.

Flight Plan Mode

Displays fuel calculations for legs of a flight plan or the cumulative flight plan.

Fuel Planning

Allows manual entry of fuel flow, ground speed, and fuel on board figures for planning purposes.

DALT/TAS/Winds

Checklists

Provides a method for reviewing aircraft checklists, created with Garmin Checklist Editor software.

Checklists Menu

Viewing Checklists

Guides on using existing checklists in order or selecting another from the menu.

SYSTEM

System Status

Provides information about the GTN unit and attached equipment, useful for customer service contact.

Database Information

Lists database names, versions, expiration dates, SYNC function, and conflicts.

GPS Status

Provides a visual reference of GPS receiver functions, including satellite coverage and position accuracy.

GPS Status Page

Details satellite coverage, receiver status, position accuracy, and displayed position (lat/lon, altitude).

Satellite-Based Augmentation System (SBAS)

GPS Faults

Communicates various GPS fault conditions affecting accuracy, including loss of integrity, navigation, or position.

External LRUs

GDL 88 or GTX 345 Status

GSR 56 Status

Provides information about the status of the GSR 56, including Iridium signal and registration.

Setup

Allows customization of unit settings, including CDI scale, date/time, airport criteria, COM/NAV radios, and keyboard format.

CDI Scale Selection

Defines the scale for the course deviation indicator, allowing manual or automatic selection.

Date/Time

Nearest Airport Criteria

Com/Nav Setup

Keyboard Format

Crossfill

Explains interfacing dual units to crossfill information, including automatic and manual transfer options.

GTN-to-GTN Crossfilling

Details data always crossfilled (waypoints, FPL, alerts) and system setup items dependent on crossfill setting.

Alerts Settings

Controls Arrival Alerts (message within proximity) and Airspace Alerts (message and filtering).

Arrival

Proximity

Airspace Alert Options

Sets buffer altitude values and toggles activation for different airspace types.

User Fields

Allows configuring data field types (Data, Function, Page) shown on the Map page.

Units Settings

Enables selection of conventions for various units displayed, such as altitude, distance, and fuel.

Setup Units

Sets units for values displayed in the unit operation, such as Feet/Meters or Nautical Miles.

Setting a User-Configured (Manual) Nav Angle

Audio

Adjusts volume for click sounds, voice callouts, and key click volume.

Backlight Settings

Connext Setup - GSR 56

Provides information about the GSR 56 and Connext Registration page for satellite services.

Connext Setup - Flight Stream 210 and 510

Details interfacing with Flight Stream 210/510 for Bluetooth, Wi-Fi, and database updates.

Operation

Explains data output from GTN/Flight Stream, enabling/disabling features, and managing paired devices.

Pairing a Device

Voice Command

MESSAGES

Message Display

Explains how message annunciator blinks and how to view messages by touching the MSG key.

ABORT APPROACH - GPS approach no longer available.

Message triggered outside MAP when GTN cannot provide approach level of service; requires climb to MSA or safe altitude.

APPROACH DOWNGRADE - Approach downgraded. Use LNAV minima.

Approach downgraded from LPV/LNAV/VNAV to LNAV; vertical guidance removed from CDI/HSI.

APPROACH NOT ACTIVE - Do not continue GPS approach.

CDI/HSI FLAG - Main lateral/vertical flag on CDI/HSI is inoperative.

CDI SOURCE - Select appropriate CDI source for approach.

COM RADIO - Com overtemp or undervoltage. Reducing transmitter power.

COM RADIO - Com radio may be inoperative.

COM RADIO - Com radio needs service.

CONFIGURATION - Terrain/TAWS configuration is invalid. GTN needs service.

TAWS is inoperative due to configuration problem with GTN, accompanied by TER FAIL.

CONFIGURATION MODULE - GTN configuration module needs service.

COOLING - GTN overtemp. Reducing backlight brightness.

COOLING FAN - The cooling fan has failed.

CROSSFILL ERROR - Crossfill is inoperative. See CRG for crossfilled items.

Crossfill not working due to loss of communication with other GTN or service needed.

CROSSFILL ERROR - GTN Navigation DB mismatch. See CRG for crossfilled items.

Navigation databases do not match between GTNs, causing communication loss; check database versions.

CROSSFILL ERROR - GTN software mismatch. See CRG for crossfilled items.

Crossfill "on" but not working due to software mismatch; contact dealer for software updates.

DATABASE - A procedure has been modified in a cataloged flight plan.

DATABASE - Terrain database is not installed, is corrupt, or is not valid for this system.

Terrain database unavailable or corrupt; re-load database from external SD card.

DATABASE - Terrain display unavailable for current location.

DATA SOURCE - Heading source inoperative or connection to GTN lost.

DATA SOURCE - Pressure altitude source inoperative or connection to GTN lost.

DATA SOURCE - Radar Altimeter source inoperative or connection to GTN lost.

DEMO MODE - Demo mode is active. Do not use for navigation.

GTN is in Demo Mode, intended for practice only; do not use for navigation.

FLIGHT PLAN IMPORT - Flight plan import failed.

FLIGHT PLAN IMPORT - Flight plan import failed. Catalog is full.

FLIGHT PLAN IMPORT - Changes to the active route are disabled.

FLIGHT PLAN IMPORT - GDU disconnected. External flight plan crossfill inoperative.

FPL WAYPOINT LOCKED - Stored flight plan waypoint is not in current navigation database.

GLIDESLOPE - Glideslope receiver has failed.

Glideslope board not communicating with system; fly approach without glideslope, contact dealer.

GLIDESLOPE - Glideslope receiver needs service.

SYMBOLS

Map Page Symbols

Describes symbols found on the Map display for airports, NAVAIDs, and airspace.

SafeTaxi™ Symbols

Traffic Symbols

Terrain Obstacle Symbols

HTAWS Obstacle Symbols

APPENDIX

Database Information and Updates

GTN Databases

Updating Databases with a SD Card

Guides on downloading and updating GTN databases using an SD card.

Updating Databases with a Flight Stream 510

Explains updating databases wirelessly via Flight Stream 510 and the Garmin Pilot application.

Database SYNC

Allows synchronizing databases from a single unit to other Garmin avionics, with status indicators.

Resolving Database SYNC Conflicts

Database Troubleshooting Tips

Demo Mode

Explains the product's "Demo" mode for practice and familiarization while on the ground.

Telligence Voice Command Qualification Procedure