Garmin GTN 625 User manual

Map
Traffic
Terrain
Weather
Procedures
Default NAV
Waypoint Info
Nearest
Utilities
Services
GTN 625/635/650
Cockpit Reference Guide
Flight Plan
System

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GTN 625/635/650 Cockpit Reference Guide
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Warnings, Cautions, and Notes
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WARNING: Navigation and terrain separation must NOT be predicated
upon the use of the terrain function. The GTN 6XX Terrain and HTerrain
Proximity features are NOT intended to be used as a primary reference
for terrain avoidance and do not relieve the pilot from the responsibility
of being aware of surroundings during flight. Terrain Proximity is only
to be used as an aid for terrain avoidance and is not certified for use in
applications requiring a certified terrain awareness system. Terrain data
is obtained from third party sources. Garmin is not able to independently
verify the accuracy of the terrain data.
WARNING: The displayed minimum safe altitudes (MSAs) are only
advisory in nature and should not be relied upon as the sole source
of obstacle and terrain avoidance information. Always refer to current
aeronautical charts for appropriate minimum clearance altitudes.
WARNING: The GTN 6XX has a very high degree of functional integrity.
However, the pilot must recognize that providing monitoring and/or
self-test capability for all conceivable system failures is not practical.
Although unlikely, it may be possible for erroneous operation to
occur without a fault indication shown by the GTN 6XX. It is thus the
responsibility of the pilot to detect such an occurrence by means of
cross-checking with all redundant or correlated information available
in the cockpit.
WARNING: The altitude calculated by GPS receivers is geometric height
above Mean Sea Level and could vary significantly from the altitude
displayed by pressure altimeters, such as the output from the GDC 74A/B
Air Data Computer, or other altimeters in aircraft. GPS altitude should
never be used for vertical navigation. Always use pressure altitude
displayed by pressure altimeters in the aircraft.
WARNING: Do not use outdated database information. Databases used
in the GTN 6XX must be updated regularly in order to ensure that the
information remains current. Pilots using an outdated database do so
entirely at their own risk.
WARNING: Do not use basemap (land and water data) information for
primary navigation. Basemap data is intended only to supplement other
approved navigation data sources and should be considered as an aid
to enhance situational awareness.

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GTN 625/635/650 Cockpit Reference Guide
Warnings, Cautions, and Notes
WARNING: Traffic information shown on the GTN 6XX is provided as an
aid in visually acquiring traffic. Pilots must maneuver the aircraft based
only uponATC guidance or positive visual acquisition of conflicting traffic.
WARNING: Do not use data link weather information for maneuvering
in, near, or around areas of hazardous weather. Information contained
within data link weather products may not accurately depict current
weather conditions.
WARNING: Do not use the indicated data link weather product age to
determine the age of the weather information shown by the data link
weather product. Due to time delays inherent in gathering and processing
weather data for data link transmission, the weather information shown
by the data link weather product may be significantly older than the
indicated weather product age.
WARNING: Never use datalinked weather to attempt to penetrate a
thunderstorm. Both the FAA Advisory Circular, Subject: Thunderstorms, and
the Airman’s Information Manual (AIM) recommend avoiding “by at least
20 miles any thunderstorm identified as severe or giving an intense radar
echo.”
WARNING: For safety reasons, GTN 6XX operational procedures must
be learned on the ground.
WARNING: To reduce the risk of unsafe operation, carefully review and
understand all aspects of the GTN 625/635/650 Pilot’s Guide as well as
this guide.Thoroughly practice basic operation prior to actual use. During
flight operations, carefully compare indications from the GTN 6XX to
all available navigation sources, including the information from other
NAVAIDs, visual sightings, charts, etc. For safety purposes, always resolve
any discrepancies before continuing navigation.

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Warnings, Cautions, and Notes
iv
CAUTION: The United States government operates the Global Positioning
System and is solely responsible for its accuracy and maintenance. The
GPS system is subject to changes which could affect the accuracy and
performance of all GPS equipment. Portions of the GTN 6XX utilize GPS
as a precision electronic NAVigation AID (NAVAID). Therefore, as with
all NAVAIDs, information presented by the GTN 6XX can be misused or
misinterpreted and, therefore, become unsafe.
CAUTION: The GTN 6XX does not contain any user-serviceable parts.
Repairs should only be made by an authorized Garmin service center.
Unauthorized repairs or modifications could void both the warranty and
the pilot’s authority to operate this device under FAA/FCC regulations.
CAUTION: The display lens has a special anti-reflective coating that is
very sensitive to waxes and abrasive cleaners. CLEANERS CONTAINING
AMMONIA WILL HARM THE ANTI-REFLECTIVE COATING. It is very
important to clean the display using a clean, lint-free cloth and an eyeglass
lens cleaner that is specified as safe for anti-reflective coatings.
CAUTION: TFRs provided by datalink weather sources (i.e., FIS-B and
SiriusXM) are only advisory and do not replace a thorough preflight
briefing on TFR times and locations. Not all TFRs may be shown. To
determine accurate TFR information, verify with official sources, i.e.,
preflight planning or flight service center.
NOTE: All visual depictions contained within this document, including
screen images of the GTN bezel and displays, are subject to change and
may not reflect the most current GTN software. Depictions of equipment
may differ slightly from the actual equipment.
NOTE: This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
NOTE: This product, its packaging, and its components contain
chemicals known to the State of California to cause cancer, birth
defects, or reproductive harm. This notice is being provided in
accordance with California’s Proposition 65. If you have any questions
or would like additional information, please refer to our website at
www.garmin.com/prop65.

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GTN 625/635/650 Cockpit Reference Guide
Warnings, Cautions, and Notes
NOTE: Canadian Installations: In accordance with Canadian Radio
Specifications Standard 102 (RSS 102), RF field strength exposure to
persons from an antenna connected to this device should be limited
to 60V/m for controlled environment and 28 V/m for uncontrolled
environment.
NOTE: Do not use the SafeTaxi function as the basis for ground
maneuvering. SafeTaxi does not comply with the requirements of
AC 120-76C and is not qualified to be used as an airport moving map
display (AMMD). SafeTaxi should only be used by the flight crew to orient
themselves on the airport surface.
NOTE: The FAA has asked Garmin to remind pilots who fly with Garmin
database-dependent avionics of the following:
• It is the pilot’s responsibility to remain familiar with all FAA regulatory
and advisory guidance and information related to the use of databases in
the National Airspace System.
• Garmin equipment will only recognize and use databases that are
obtained from Garmin or Jeppesen. Databases obtained from Garmin
or Jeppesen are assured compliance with all data quality requirements
(DQRs) by virtue of a Type 2 Letter of Authorization (LOA) from the
FAA. A copy of the Type 2 LOA is available for each database at
flyGarmin.com.
• Use of a current Garmin or Jeppesen database in your Garmin equipment
is required for compliance with established FAA regulatory guidance, but
does not constitute authorization to fly any and all terminal procedures
that may be presented by the system. It is the pilot’s responsibility to
operate in accordance with established AFM(S) and regulatory guidance
or limitations as applicable to the pilot, the aircraft, and installed
equipment.
NOTE: The pilot/operator must review and be familiar with Garmin’s
database exclusion list as discussed in SAIB CE-14-04 to determine what
data may be incomplete. To see if an exclusion report exists for a specific
database, visit flyGarmin.com.

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Warnings, Cautions, and Notes
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NOTE: The pilot/operator must have access to Garmin and Jeppesen
database alerts and consider their impact on the intended aircraft
operation. For a current list of aviation database alerts, visit
flyGarmin.com.
NOTE: If the pilot/operator wants or needs to adjust the database, visit
flyGarmin.com.
NOTE: Garmin requests the flight crew report any observed discrepancies
related to database information. These discrepancies could come in the
form of an incorrect procedure; incorrectly identified terrain, obstacles and
fixes; or any other displayed item used for navigation or communication
in the air or on the ground. To report an aviation database error, visit
flyGarmin.com.
NOTE: The GTN touchscreen may not respond to touch commands if
condensation or moisture accumulate on the touchscreen.
NOTE: Depending on software version and configuration, GTN features
and screen images may differ from those shown in this manual. Refer to
the GTN 625/635/650 Pilot’s Guide (P/N 190-01004-03) for more
information on specific GTN software versions.

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Record of Revisions
Part Number Revision Date Description
190-01004-04 A
B
C
D
E
F
G
H
J
K
L
M
N
02/2011
03/2011
03/2011
11/2012
02/2013
10/2013
08/2014
07/2015
01/2016
09/2016
08/2017
07/2018
04/2019
Initial Release.
Updated message list.
Updated part number (back cover only).
Added v3.00 functionality.
Added v4.00 functionality.
Added v5.00 functionality.
Added v5.11 functionality.
Added v6.00 functionality.
Added v6.10 functionality.
Added v6.20 functionality.
Added v6.30 funcitonality.
Added v6.50 functionality.
Added v6.60 functionality.

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TABLE OF CONTENTS
Introduction...................................................................................................... 1
Direct-To Navigation.................................................................................................................... 2
NAV/COM Radio................................................................................................ 3
Touchscreen Entry ....................................................................................................................... 3
Selecting a NAV/COM Frequency using Rotary Knobs ................................................................... 4
Frequency Flip/Flop...................................................................................................................... 4
Voice Commands......................................................................................................................... 4
Transponder...................................................................................................... 5
Transponder Control .................................................................................................................... 5
TCAS II Transponder Mode Controls ............................................................................................. 6
Special Squawk Codes................................................................................................................. 6
Map .................................................................................................................. 7
Changing User Fields................................................................................................................... 8
Pan Mode ................................................................................................................................... 9
User Waypoints ........................................................................................................................... 9
Creating (or Editing) a Flight Plan in Pan Mode .......................................................................... 10
Traffic.............................................................................................................. 11
Traffic System Status Annunciations ........................................................................................... 12
TCAS......................................................................................................................................... 14
TCAD ........................................................................................................................................ 15
ADS-B Traffic ............................................................................................................................. 16
Terrain............................................................................................................. 18
TAWS ........................................................................................................................................ 18
HTAWS...................................................................................................................................... 19
Weather .......................................................................................................... 20
SiriusXM®Weather (Optional).................................................................................................... 20
FIS-B Weather ........................................................................................................................... 21
Stormscope®Weather (Optional)................................................................................................ 22
Connext Weather (Optional) ...................................................................................................... 23
Default NAV.................................................................................................... 24
Flight Plan ...................................................................................................... 25
Creating a Flight Plan................................................................................................................ 25
Flight Plan Menu....................................................................................................................... 26
En route Vertical Navigation (VNAV) .......................................................................................... 27
VNAV Options........................................................................................................................... 28
Airways..................................................................................................................................... 29
Procedures...................................................................................................... 30
Departures, Arrivals, and Approaches.......................................................................................... 30
Flying the Missed Approach ....................................................................................................... 31
Flying an Approach with a Hold ................................................................................................. 31

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GTN 625/635/650 Cockpit Reference Guide
Nearest ........................................................................................................... 32
Waypoint Info................................................................................................. 33
Creating a User Waypoint .......................................................................................................... 34
Services .......................................................................................................... 35
Phone ....................................................................................................................................... 36
SMS Text ................................................................................................................................... 36
Music........................................................................................................................................ 37
Position Reports ........................................................................................................................ 38
Contacts ................................................................................................................................... 39
Utilities........................................................................................................... 40
Vertical Calculator (VCALC) ....................................................................................................... 41
System............................................................................................................ 42
GTN-GTN Crossfilling ................................................................................................................ 43
GTN-GNS Crossfilling ............................................................................................................... 44
GTN-G3X Touch Crossfilling....................................................................................................... 45
Connext Setup - Flight Stream 210 and 510............................................................................... 45
Pairing a Device......................................................................................................................... 46
Connext Operation with Flight Stream 210 and 510................................................................... 47
Connext Setup - Other Bluetooth Devices................................................................................... 48
Symbols .......................................................................................................... 49
Map Symbols............................................................................................................................. 49
SafeTaxi™ Symbols................................................................................................................... 50
Traffic Symbols .......................................................................................................................... 50
Terrain Obstacle Symbols ........................................................................................................... 52
HTAWS Obstacle Symbols .......................................................................................................... 53
Basemap Symbols...................................................................................................................... 53
Map Tool Bar Symbols ............................................................................................................... 54
Miscellaneous Symbols .............................................................................................................. 55
Stormscope® Symbols............................................................................................................... 56
Messages........................................................................................................ 57
Glove Qualification Procedure ....................................................................... 83
Tests Required for Glove Qualification ................................................................................. 84
Tests Not Required for Glove Qualification ................................................................................. 86
Telligence Voice Command Qualification Procedure ...................................... 87
Voice Command Guidelines ....................................................................................................... 87
Voice Command Instructions...................................................................................................... 88
Qualification Procedure ............................................................................................................. 88

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GTN 625/635/650 Cockpit Reference Guide
Introduction
INTRODUCTION
This cockpit reference guide (CRG) is intended to serve as a quick
reference covering the basic features and operating procedures for the GTN
625/635/650. For detailed descriptions of any information found in this
guide, refer to the latest revision of the GTN 625/635/650 Pilot’s Guide,
P/N 190-01004-03, found at flyGarmin.com.
Dual Rotary Knob
Function Hints
Large and
Small Knobs
Active COM/NAV
Frequency
Standby Com/Nav
Frequency
Direct-To Key
Photo Sensor
HOME Key
Datacard
Home Page
Annunciations
Function
Keys
Locking
Screw
Message
Annunciation
And Key
Xpdr Panel
Controls (opt)
Volume, Squelch On/Off,
and Nav ID On/Off
GTN 650 Front Panel/Main Page
Direct-To Key - Press to provide a direct course to a selected
waypoint.
Home Key - A single press of the Home Key returns the user
to the main page to access features. Pressing and holding the
HOME key while on any page will display the default NAV page.
Volume and Squelch Knob - Controls volume of the COM and
NAV radios. Press to use the IDENT function of the NAV radio.
Pressing and holding the volume knob will change the frequency
to emergency frequency.
Large and Small Knobs - Both are rotary knobs. The small
knob can be pressed and held in to flip-flop COM and NAV
frequencies.

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Introduction
Direct-To Navigation
OR
Press the Direct-To key to quickly navigate from your present position
directly to a selected waypoint, flight plan waypoint, or nearest airport.
Direct-To a Waypoint
1. Press Direct-To.
2. Touch the Waypoint Identifier field and select the characters for the
desired waypoint with the large and small right knobs or the touch
keypad.
3. Touch Activate or press the small right knob. Text near the small right
knob indicates its current function.
Direct-To a Flight Plan Waypoint
OR
1. Press Direct-To.
2. Touch the FPL tab and then the desired Flight Plan waypoint.
3. Touch Activate or press the small right knob.
Direct-To a Nearest Airport
OR
1. Press Direct-To.
2. Touch the NRST APT tab and then the desired airport from the Nearest
Airport list. Touch the Up or Down keys as needed to show more of the list.
3. Touch Activate or press the small right knob.
Direct-To a User-Defined Hold
1. Press Direct-To and the touch Hold.
2. Touch the Course key and use the keypad to select the course.
3. Touch the Course Direction key to select inbound/outbound direction
and then the Turn key to select the turn direction.
4. Touch the Leg Type key to select time/distance and then touch the Leg
Time or Leg Distance key and use the keypad to select the leg length.
5. Touch the Expect Further Clearance key and use the keypad to select
the reminder time.
6. Touch the Load Hold key then the Hold Activate key.

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GPS/NAV/COM
NAV/COM RADIO
NOTE: The GTN 625/635/650 are all GPS/SBAS navigators. In addition, the
GTN 635 has COM functionality and the GTN 650 has COM/NAV functionality.
Identifier and Type shown
for the selected frequency. Nav frequencies in the
database will display
the Ident based on GPS
position.
Standby COM Frequency
Standby NAV Frequency
Active COM
Frequency Active NAV Frequency
COM and NAV Radio Frequencies
Touchscreen Entry
NOTE:
G
designates functions that are accomplished by touching.
Cyan colored keys represent fields that can be modified, white colored keys
represent keys that change the state of operation for the related feature.
The COM or NAV frequency is changed by touching the STBY window and
using the keypad to enter the desired frequency. Touch Enter when finished or
Back to exit without making changes. If an entry was started, touch Cancel to
exit out of the screen without making changes.
G
COM Standby Page
Mon:
Monitors the standby COM frequency.
Find: Displays categories for User, Recent, Nearest, and
Flight Plan frequencies.
Xfr:
Automatically enters the frequency to the active
COM or NAV frequency window.
NOTE: The NAV Standby page is identical to the COM Standby page except
that there is no MON key.

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GPS/NAV/COM
Selecting a NAV/COM Frequency using Rotary Knobs
Press the center of the small right knob to change from the COM frequency
display to the NAV frequency display.
1. Turn or momentarily press the small right knob once to highlight the
STBY field of COM or NAV. The knob function defaults to COM after 30
seconds of inactivity.
2. Turn the large right knob to the desired MHz value.
3. Turn the small right knob to the desired kHz value.
4. Press the small right knob to confirm entry.
Frequency Flip/Flop
To flip/flop the active and standby NAV/COM frequencies, press and
hold the small knob or touch the active NAV/COM frequency field. An
annunciation, Hold for Flip-Flop, will be displayed near the knobs.
Voice Commands
If a GMA 350 is connected to the GTN, voice commands may be available.
Refer to GTN 6XX/7XX Telligence Voice Command Guide, P/N 190-01007-50.

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Transponder
TRANSPONDER
Transponder Control
Squawk Code Field
Transponder
Mode
Active
Transponder
G
Transponder Control
Transponder ID
Touch the Squawk Code Field to enter frequency for either Transponder 1
(XPDR1) or Transponder 2 (XPDR2).
IDENT
Touch IDENT to activate the transponder’s IDENT function. The key text
remains gray and will change to green when IDENT mode is active.
Current
Transponder
Mode
Transponder Panel Page (Non-GDL 88 Installations with Mode C Transponder)
Standby:
Touch to place transponder in Standby mode. It is still
powered, but will not transmit information. STBY displays in the
squawk code field.
Ground:
Touch to place transponder in Ground mode. Refer to the
documentation provided with your GTX transponder for specific
information on this mode of operation.
On:
Touch to turn transponder On for Mode A operation. Will
transmit the squawk code when interrogated. ON displays in
the squawk code field.
Altitude
Reporting:
Touch for Mode C operation. The transponder will be on and
will transmit its squawk code and altitude when interrogated.
ALT displays in the squawk code field.
VFR:
Touch to set the squawk code to 1200.
Enable ES:
Touch to toggle extended squitter.

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Transponder
TCAS II Transponder Mode Controls
The GTN can also control the modes of a TCAS II system through a GTX
3000. The TA Only and TA/RA modes are added to the transponder control
panel. Selecting TA Only or TA/RA will command the TCAS into the selected
mode, but depending on the aircraft configuration (e.g., on ground), the TCAS
may remain in a different mode.
Special Squawk Codes
The selected squawk code will always be in use. As you change a squawk
code, the original code will be sent until you are finished selecting the new
code.
The table below lists special squawk codes:
Squawk Code Description
1200 Default VFR code in the USA
7500 Hijacking
7600 Loss of Communications
7700 Emergency
Special Squawk Codes
NOTE: While 1200 is the defaultVFR squawk code, the installer can configure
any code to the VFR key. This is to support international operations where
1200 may not be used.

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Map
MAP
G
Map Page
G G
Touch to select the overlays
(Terrain, TOPO, Airways,
NEXRAD, and Traffic) that are
displayed on the map page.
Touch to select the fields
that are displayed in the four
corners on the Map.
Touch to restore the user fields
to Garmin factory defaults.
Touch to customize how the
map, aviation, land, traffic,
and weather information is
displayed on the map page.
Touch, hold and slide to
set how much detail is
shown on the map page.
Map Menu

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Map
Changing User Fields
The data fields located at each of the four corners of the Map page can
be configured to display any combination of four different navigation
parameters. To exit without changes to the Map page, touch Cancel.
G G G
Touch to select data field
(TRK currently shown).
Touch to select data field
(DIS currently shown).
Touch to cancel any changes.
Change NAV User Field Mode
Touch to select data field
type.
Touch to select
Data, Function,
or Page tab.
Slider indicates more
selections are available.
Press finger and slide to
view more selections.
Select User Fields Page

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Map
Pan Mode
NOTE: Annunciations for TIS Traffic Coasting or Traffic Removed are not
present while in pan mode. For more information refer to the “TIS Traffic
Status Annunciations” section.
To enter Pan Mode, touch the map anywhere on the Map page. Drag your
finger across the map to move it as desired. In Pan Mode, touch any symbol
on the map to highlight, then touch the information key to display any
available information related to that symbol. Touch the Next key to cycle to
other waypoints close to the cursor.
User Waypoints
Touch any location on the map that is not an existing waypoint to create a
user waypoint. The Waypoint Info key will display, “Create Waypoint” and
will display the “Create User Waypoint” page. See the “Waypoint Info,
Creating a User Waypoint” section.
Cursor
Waypoint Info Key
Back
Key
Touch to create or edit flight plan.
Next
Key
Pan Mode Controls
To enter or edit a flight plan, touch the Graphically Edit FPL key. To leave
Pan Mode, touch the Back key.

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Map
Creating (or Editing) a Flight Plan in Pan Mode
NOTE: It is not possible to graphically add an intermediate waypoint between
the current position and a Direct-To waypoint unless that waypoint is in the
flight plan. Garmin recommends deleting any flight plan prior to graphically
editing a Direct-To waypoint.
NOTE: When graphically editing the active flight plan leg, the active leg
course and TO waypoint will be added to the flight plan as a Direct-To.
While in Pan Mode, touch the Graphically Edit FPL key to add/remove
waypoints and/or alter a course line in an existing flight plan. You can also
enter or edit an existing flight plan by touching the Flight Plan key on the
home page. See the “Flight Plan” section of this guide.
G
On the Map page, enter Pan Mode by touching the screen. Touch the
Graphically Edit FPL key. Touch any waypoint that you want to be part of
your flight plan. You also can touch and drag a flight plan line to a waypoint.
Should you make an error, touch the Undo key. The Undo key will reverse
up to the last nine consecutive edits. When finished, touch the Done key to
save your changes. Touch Cancel to leave the screen without making any
changes to the flight plan.
Undo Key
Touch to leave
the page without
changes to the
flight plan.
Touch to confirm the
entries into the flight plan.
Flight Plan on Map Page