Garmin GTN 625 User manual

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

ii GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev.C
Warnings, Cautions, and Notes
WARNING: Navigation and terrain separation must NOT be predicated
upon the use of the terrain function. The GTN 625/635/650 Terrain
Proximity feature is NOT intended to be used as a primary reference for
terrainavoidanceanddoesnotrelievethepilotfromtheresponsibilityof
beingawareofsurroundingsduringflight.TheTerrainProximityfeatureis
onlytobeusedasanaidforterrainavoidanceandisnotcertifiedforuse
inapplicationsrequiringacertifiedterrainawarenesssystem.Terraindata
isobtained fromthirdparty sources.Garminis notableto 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 Garmin GTN 625/635/650 has a very high degree of
functional integrity. However, the pilot must recognize that providing
monitoringand/orself-testcapabilityforallconceivablesystemfailuresis
notpractical.Althoughunlikely,itmaybepossibleforerroneousoperation
to occur without a fault indication shown by the GTN 625/635/650.It is
thustheresponsibilityofthepilottodetectsuchanoccurrencebymeans
of cross-checking with all redundant or correlated information available
in the cockpit.
WARNING: Thealtitude calculatedby GPSreceivers isgeometricheight
above Mean Sea Level and could vary significantly from the altitude
displayedbypressurealtimeters,suchastheoutputfromtheGDC74A/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: Donotuseoutdated databaseinformation.Databases used
in the GTN 625/635/650 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that the information remains current.Pilots using an outdated database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
approvednavigationdata sources and should be consideredasan aid to
enhance situational awareness.

iii190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Warnings, Cautions, and Notes
WARNING: Traffic information shown on the GTN 625/635/650 is
providedas an aid in visuallyacquiringtraffic.Pilotsmust maneuver the
aircraft based only upon ATC guidance or positive visual acquisition of
conflicting traffic.
WARNING: XM Weather should not be used for hazardous weather
penetration.WeatherinformationprovidedbytheGDL69/69Aisapproved
only for weather avoidance, not penetration.
WARNING: NEXRADweatherdataistobeusedforlong-rangeplanning
purposesonly.Duetoinherentdelaysindatatransmissionandtherelative
ageofthedata,NEXRADweatherdatashouldnotbeusedforshort-range
weather avoidance.
WARNING: Forsafetyreasons,GTN625/635/650operationalprocedures
must be learned on the ground.
WARNING: To reducetherisk of unsafeoperation,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 to
all available navigation sources, including the information from other
NAVAIDs,visualsightings,charts,etc.Forsafetypurposes,alwaysresolve
any discrepancies before continuing navigation.
WARNING: Never use the datalinked weather to attempt to penetrate
a thunderstorm.Both the FAAAdvisory Circular,Subject:Thunderstorms,
andtheAirman’sInformationManual(AIM)recommendavoiding“byat
least20milesanythunderstormidentifiedassevereorgivinganintense
radar echo.”
CAUTION: TheUnitedStatesgovernmentoperatestheGlobalPositioning
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 625/635/650
utilizeGPSasaprecisionelectronicNAVigationAID(NAVAID).Therefore,
as with all NAVAIDs, information presented by the GTN can be misused
or misinterpreted and,therefore, become unsafe.

iv GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Warnings, Cautions, and Notes
CAUTION: TheGTN625/635/650doesnotcontainanyuser-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 GTN 625/635/650 has a display that is coated with a
specialanti-reflectivecoatingthatisverysensitivetowaxesandabrasive
cleaners. CLEANERS CONTAINING AMMONIA WILL HARM THE ANTI-
REFLECTIVE COATING. It is very important to clean the display using a
clean,lint-freeclothandaneyeglasslenscleanerthatisspecifiedassafe
for anti-reflective coatings.
CAUTION: Garmin would like to remind pilots flying with
GDL 69/69A-equipped aircraft that TFRs are only advisory and Garmin
wouldliketoremindpilotsflyingwithGDL69/69A-equippedaircraftthat
TFRsareonlyadvisoryandarenotareplacementforathoroughpreflight
briefing on TFR times and locations. Always confirm TFR data through
official sources and contact your Flight Service Station for interpretation
ofTFR data.
NOTE: All visual depictions contained within this document, including
screenimagesoftheGTN625/635/650bezelanddisplays,aresubjectto
changeandmaynotreflectthemostcurrentGTN625/635/650software.
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: Terrain data is not displayedwhenthe aircraft latitude is greater
than 75°North or 60°South.
NOTE: Thisproduct,itspackaging,anditscomponentscontainchemicals
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
additionalinformation,pleaserefertoourwebsiteatwww.garmin.com/
prop65.

v190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
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.

vi GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Record of Revisions
Part Number Revision Date Description
190-01004-04 A
B
C
Feb 2011
Mar 2011
Mar 2011
Initial Release
Updated message list.
Updated part number on back cover
only.

1190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Introduction
INTRODUCTION
This cockpit reference guide (CRG) is intended to serve as a quick reference
coveringthebasicfeaturesandoperatingproceduresfortheGTN625/635/650.
Fordetaileddescriptionsofanyinformationfoundinthisguide,refertothelatest
revision of the GTN 625/635/650 Pilot’s Guide, P/N 190-01004-03 found at
www.garmin.com.
Large
and Small
Knobs
Volume and
Squelch Knob
Active
COM/NAV
Frequency
Transponder
Field
Standby
COM/NAV
Frequency
Direct-To
Key
Photo Sensor
Home
Key
SD Card
Messages
Function
Icons
Locking
Screw
Touchscreen
Display
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.

2 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
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.
Standby COM
Frequency Standby NAV Frequency
Active COM
Frequency Active NAV Frequency
COM and NAV Radio Frequencies
Selecting a NAV/COM Frequency using Rotary Knobs
Turn or momentarily press the1. small knob once to highlight the STBY
field of COM or NAV. The knob function defaults to COM after 30
seconds of inactivity.
Turn the2. large knob to the desired MHz value.
Turn the3. small knob to the desired kHz value.
Press the4. small knob to confirm entry.

3190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
GPS/NAV/COM
Touchscreen Entry
NOTE:
*
designatesfunctionsthatareaccomplishedbytouching.
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.
*
COM Standby Screen
Mon: Monitors the standby COM frequency.
Find: Displays categories for User,Recent,Nearest, and Flight Plan
frequencies.
Xfer: Automatically enters the frequency to the active COM or NAV
frequency window.
NOTE: The NAV Standby screen is identical to the COM Standby screen
except that there is no MON key.
Frequency Flip/Flop
To flip/floptheactiveandstandbyNAV/COMfrequencies,touchandholdthe
small knob or touch the active NAV/COM frequency field. An annunciation,
Hold for Flip-Flop, will be displayed near the knobs.

4 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Transponder
TRANSPONDER
Transponder Control
Squawk Code Field
Transponder
Mode
Active
Transponder
*
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 Mode of Transponder
Transponder Panel Page
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. Mode S
interrogations will be allowed.GND displays in the squawk
code field.
On: Touch to turn transponder On for ModeA 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.

5190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Transponder
Special Squawk Codes
Theselectedsquawkcodewillalwaysbeinuse.Asyouchangeasquawkcode,
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 DefaultVFR code in the USA
7500 Hijacking
7600 Loss of Communications
7700 Emergency
Special Squawk Codes
NOTE: While 1200 is the default VFR squawk code, the installer can
configure any code to the VFR key. This is to support international
operations where 1200 may not be used.

6 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Map
MAP
*
Map
Map Page
* *
Map Menu
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 Screen.
Touch to restore the unit to
Garmin factory defaults.
Touch to select the map,
aviation, land, traffic, and
weather items that are
displayed on the map page.
Touch, hold and
slide to set how
much detail is
shown on the map
page.
Map Menu Options

7190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Map
Changing Data 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.
* * *
Change NAV Data Fields
Selections Available for NAV Data Fields
BRG - Bearing to Current Waypoint
DIS - Distance to Current Waypoint
DIS to Dest - Distance to Destination
DTK - Desired Track
ESA - Enroute Safe Altitude
ETA - Estimated Time of Arrival
ETA at Dest - ETA at Destination
ETE - Estimated Time Enroute
ETE to Dest - ETE to Destination
Fuel Flow - Total Fuel Flow
Generic Timer - Timers (Utilities)
GS - GPS Ground Speed
GSL - GPS Altitude
MSA - Minimum Safe Altitude
OAT (static) - Static Air Temperature
OAT (total) - Total Air Temperature
Time - Current Time
TKE - Track Angle Error
Trip Timer - Timers (Utilities)
TRK - Track
VSR - Vertical Speed Required
Wind - Wind Speed and Direction
XTK - Cross Track Error
OFF - Do Not Display Data Field

8 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Map
Pan Mode
NOTE: Annunciations forTISTraffic Coasting orTraffic Removed are
not present while in pan mode.For more information refer to page 11.
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
willdisplay the “CreateUser Waypoint” page. Seethe“WaypointInfo,Creating
User Waypoint” section.
Cursor
Waypoint Info Key
Back
Key
Touch to create or edit flightplan.
Next
Key
To enter or edit a flight plan, touch the Graphically Edit FPL key. To leave
Pan Mode, touch the Back key.

9190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Map
Creating (or Editing) a Flight Plan in Pan Mode
While in Pan Mode, touch the Graphically Edit FPL key to add/remove
waypointsand/or alteracourseline inanexisting flightplan.Youcan alsoenter
oredit anexistingflightplan bytouchingtheFlight Plankeyonthe home page.
See the Flight Plan section of this guide.
*
Edit Flight Plan
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. 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 page 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

10 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Traffi c
TRAFFIC
*
Traffic
Touch to select Traffic
Mode. Selections are:
Operate and Standby.
Touch to activate
testing mode.
Touch to select the
altitude filter. Selections
are: Normal, Above,
Below, or Unrestricted.
Traffic Page Options
Altitude Mode Displayed Traffic Range
Below -9900 ft to 2700 ft
Normal -2700 ft to 2700 ft
Above -2700 ft to 9900 ft
Unrestricted AllTraffic Shown
The Test key places the traffic system in test mode. Not all traffic systems
support Test mode. There are no menu options for the traffic page.

11190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Traffi c
Traffic System Status Annunciations
Traffic Page
Annunciation Description
No Data Data is not being received from the transponder
Failed The transponder has failed
Unavailable TIS is unavailable or out of range
Traffic Status
Banner
Annunciation Description
Traffic Coast 9 SEC
The displayed data is not current (6 to 12 seconds since
last message).
The quality of displayed traffic information is reduced
when this message is displayed.
Traffic Removed
Traffic is removed because it is too old for coasting (12
to 60 seconds since last message).
Traffic may exist within the selected display range,but it
is not displayed.
Traffic Status
Banner
Annunciation Description
TA 6.0 + 03 ↓
System cannot determine bearing ofTrafficAdvisory.
Annunciation indicates distance in NM,altitude
separation in hundreds of feet, and altitude trend arrow
(climbing/descending).
Failed Traffic data has failed.
Data Fail Data is being received from the transponder, but a failure
is detected in the data stream
No Data Traffic has not been detected.

12 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Terrain
TERRAIN
NOTE: Features may vary, depending on your configuration.
*
Terrain
GPS
Computed
Altitude
Legend Active Flight Plan
Terrain Page
* *
Terrain Menu
Touch to display the
active flight plan.
Touch to suppress TAWS alerts. Touch to test the TAWS system.
Touch to display terrain as a
360° ring or a 120° arc. Touch to display the
terrain legend.
Terrain Menu Options

13190-01004-04 Rev. C GTN 625/635/650 Cockpit Reference Guide (CRG)
Weather
WEATHER
NOTE: Featuresmayvary,dependingonyourconfiguration.TheDatalink
keyortheStormscopekeywillnotbedisplayedorusedifonlyoneweather
system is installed.
*
Weather
Datalink Weather (Optional)
*
*
*
Datalink Weather Menu
Touch to select
orientation. Selections
are: Heading Up, Track
Up, and North Up.
Touch to select
the NEXRAD type.
Selections are: Off,
US, and Canada.
Touch to toggle
display of
the weather
legend.
Touch to scroll to
view the remaining
selections.
Touch to
enable or
disable
layers.
Green bar indicates that selection is
enabled and will be displayed on map.
Weather Datalink Menu Options

14 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C
Weather
Stormscope®Weather (Optional)
* * *
Stormscope Weather Menu
Displays Stormscope as
360° ring or 120° arc. Touch to select
operating mode.