Garmin GTN 625 Owner's manual

GTN 625/635/650 SW v6.50 Pilot’s Guide Upgrade Supplement 190-01004-19 Rev. A
GTN 625/635/650 SOFTWARE v6.50
PILOT’S GUIDE UPGRADE SUPPLEMENT
This supplement contains the pages revised in the GTN 625/635/650 Pilot’s Guide,
P/N 190-01004-03, Rev N, regarding the new features of software v6.50. Change bars
are placed adjacent to the revised information as described in the revision summary table.
This supplement, in combination with the GTN 625/635/650 Pilot’s Guide,
P/N 190-01004-03, Rev. M, is equivalent to the GTN 625/635/650 Pilot’s Guide,
P/N 190-01004-03, Rev. N.
Current documents are available at flyGarmin.com
Printed copies may be purchased by contacting Garmin Customer Support.
NOTE: Depending on which version of software is installed and how
it is configured, the actual features and screen images may differ from
what is shown. For more information regarding feature availability for
specific software versions refer to the GTN 625/635/650 Pilot’s Guide,
P/N 190-01004-03.

GTN 625/635/650 SW v6.50 Pilot’s Guide Upgrade Supplement 190-01004-19 Rev. A
© 2018
Garmin International, Inc. or its subsidiaries
All Rights Reserved
Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated,
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unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.
This manual reflects the operation of system software v6.50 or later. Some differences in operation may be observed
when comparing the information in this manual to later software versions.
This part shall comply with Garmin Banned and Restricted Substances document, 001-00211-00.
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GTN 625/635/650 Pilot’s Guide Revision N, Change Summary
Section Page Description
Section 4 – Flight Plans
4 4-1 Updated menu options in figure 4-1, “Flight Plan Functional
Diagram.”
4.1 4-2 Updated screen image in figure 4-4, “Remove Single Existing
Waypoint.”
4.2.1 4-4 Updated screen image in figure 4-8, “Active Flight Plan Wpt
Options.”
4.2.1.2 4-6 Updated screen image in figure 4-11, “Active Flight Plan Insert
Waypoint Before Option.”
4.2.1.4 4-7 Added “Along Track Offsets” section.
4.2.1.5 4-9 Revised sequence steps for clarity.
4.3 4-23
Updated screen image in figure 4-43, “Flight Plan Menu.”
Updated menu options in figure 4-44, “Flight Plan Menu
Functional Diagram.”
4.3.2 4-24 Added note regarding removal of ATKs.
4.3.3 4-25 Added “En Route Vertical Navigation” section.
4.3.4 4-32 Added “Temperature Compensated Altitude” section.
4.3.5 4-33 Added note regarding en route vertical navigation availability.
4.3.6 4-35
Added Altitude and Flight Path Angle to list of user-selectable
data fields.
Added information related to VNAV functionality.
4.3.7.2 4-37 Added note regarding the removal of ATKs.
Section 5 – Direct-To
5.5 5-6 Updated screen image in figure 5-9, “Touch the Map to Create
a MAPWPT as the Direct-To Course Destination.”
Section 6 – Procedures
6 6-1 Revised note regarding bar-corrected altitude to include en
route vertical navigation.
6.2 6-4 Added note regarding advisory climb altitudes.
6.3 6-8 Added note about verifying altitudes when using Descent
VNAV.
GTN 625/635/650 SW v6.50 Pilot’s Guide Upgrade Supplement 190-01004-19 Rev. A

Section Page Description
6.4 6-9 Added note about verifying altitudes (including ATC cleared
altitudes) when using Descent VNAV.
6-12 Added table 6-2, “Loading and Activating an Approach.”
Section 7 – Waypoint Info
7.7 7-15 Added note pertaining to user airport feature availability.
Added information related to user airports.
7.8
7-18
Updated screen image in figure 7-24, “Waypoint Info - Create
User Waypoint.”
Updated Create Waypoint key icon.
Added step 4. Includes associated key icon.
7-19
Updated screen image in figure 7-26, “Waypoint Info - Create
User Waypoint Type.”
Added step 8. Includes associated key icon.
7.8.2 7-20 Updated screen image in figure 7-28, “Waypoint Info - Set
Lat/Lon Coordinate Selection.”
7.9 7-23 Added information about overwriting existing user waypoints
during import.
Section 8 – Map
8.1.2 8-9 Added Altitude Constraints menu option to figure 8-10,
“Map Setup Functional Diagram.”
8.1.2.1 8-11 Added Altitude Constraint feature to table 8-2, “Map Setup
Map Options.”
8-15 Added “Altitude Constraints” subsection.
8.6 8-42 Added User Airport, TOD/BOD, and ATK to table 8-19,
“Map Symbols.”
Section 9 – Traffic
9.5.2 9-19 Updated screen image in figure 9-11, “ADS-B Traffic Menu.”
9.5.2.1 Added “ADS-B Display” subsection.
Section 10 – Terrain
10.1 10-1 Added table 10-1, “Terrain Configurations.”
10.2 10-2 Added “GPS Altitude for Terrain” section.
GTN 625/635/650 SW v6.50 Pilot’s Guide Upgrade Supplement 190-01004-19 Rev. A

Section Page Description
10.5 10-10 Added “Terrain Alerting” section.
Section 11 – Weather
11.3 11-32 Updated hyperlink to Connext weather page on Garmin
website.
11.3.4 11-36 Revised Connext Weather activation information.
Section 14 – Utilities
14
14-1
Updated screen image in figure 14-1, “Utilities Home Page.”
Added table 14-1, “Utilities Page Features.” Includes
descriptions for VNAV and Logs pages.
14-3 Added VNAV and Logs menu options to figure 14-2, “Utilities
Functional Diagram.”
14.1 14-4 Added note regarding feature/page exclusivity.
Section 15 – System
15 15-2 Added Keyboard to Setup menu options in figure 15-2,
“System Function Summary.”
15.4 15-15 Added Keyboard to list of System Setup page functions.
Added COM Sidetone Control and Keyboard menu options to
figure 15-19, “System Setup Functions.”
15-16 Updated screen image in figure 15-20, “System Setup Page.”
15.4.3 15-19 Added information regarding Include User Airports function.
Updated screen image in figure 15-25, “Select Nearest Airport
Criteria.”
15-20 Added step 5 to reflect addition of Include User Airports key.
15.4.4.3 15-22 Added “COM Sidetone Control” section.
15.4.5 15-23 Added “Keyboard Format” section.
15.7 15-32 Added unit values for Position Format to table 15-9, “System
Units Setup.”
GTN 625/635/650 SW v6.50 Pilot’s Guide Upgrade Supplement 190-01004-19 Rev. A

Section Page Description
15.7.3 15-35 Added list of available position formats.
Added information about regional position formats.
Added figure 15-48, “British National Grid Position Format
Detail.”
15-36 Added figure 15-49, “Irish National Grid Position Format
Detail.”
Added figure 15-50, “Swiss National Grid Position Format
Detail.”
Updated screen image in figure 15-51, “Position Format
Selection.”
15.11.2 15-42 Added information about passkey verification.
Section 16 – Messages
16 16-24 Added VNAV related messages to table 16-1, “Messages.”
Section 17 – Symbols
17.1 17-1 Added User Airport, TOD/BOD, and ATK to table 17-1,
“Map Page Symbols.”
Section 18 – Appendix
18.4 18-21 Rewrote “Glove Qualification Procedure” section.
GTN 625/635/650 SW v6.50 Pilot’s Guide Upgrade Supplement 190-01004-19 Rev. A

4-1190-01004-03 Rev. N
GTN 625/635/650 Pilot’s Guide
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4 FLIGHT PLANS
The GTN 6XX lets you create up to 99 different flight plans, with up to 100
waypoints in each flight plan. The Flight Plan function is accessed by touching
the Flight Plan key on the Home page. The Flight Plan function allows you to
create, store, edit, and copy flight plans.
Menu
Catalog
Store
Delete
Preview
Parallel Track
Invert
VNAV
Temperature
Compensation
Edit Data Fields
Recent
Nearest
Flight Plan
User
Search by Name
Search by City
Select Waypoint
Find
Add Waypoint
* "Load Procedures" is shown for airports
** "Load SAR" is only shown when the Search and Rescue feature is enabled by the installer
*** "Load Airway" is shown for waypoints on a published airway
Activate Leg
Insert Before
Insert After
Load Procedures*
Load SAR**
Hold at Waypoint
Load Airway***
Waypoint Info
Remove
Waypoint
Options
Active FPL
Figure 4-1 Flight Plan Functional Diagram
NOTE: Navigation is provided for fixed wing aircraft above 30 kts and for
rotorcraft above 10 kts.

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Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.1 Creating a New Flight Plan
NOTE: If a flight plan that includes a procedure that has been modified
by the pilot is saved into the flight plan catalog, the GTN cannot check the
accuracy of that procedure when that flight plan is used on a later flight. It
is recommended that flight plans with modified procedures not be saved
in the flight plan catalog.
1. From the Home page, touch Flight Plan.
Touch To Add
Waypoint
Touch To Remove
Waypoint
Figure 4-2 Create New Flight Plan
2. If there is already an Active Flight Plan, touch Menu and then
the Delete and OK keys to delete the existing active flight
plan.
Touch To Delete
Flight Plan
Figure 4-3 Delete Existing Flight Plan
A single waypoint may be deleted by touching the waypoint
and then touching the Remove key.
Selected Waypoint
Touch To Remove
Waypoint
Figure 4-4 Remove Single Existing Waypoint

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190-01004-03 Rev. N
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.2 Active Flight Plan Page
The Active Flight Plan Page provides information and editing functions for
the flight plan currently in use for navigation. Once you have activated a flight
plan, the Active Flight Plan Page shows each waypoint for the flight plan, along
with the Desired Track (DTK), Distance (DIST) for each leg and Cumulative
Distance (CUM). The data fields are user-selectable and may be changed to
display Cumulative Distance (CUM), Distance (DIST), Desired Track (DTK),
En Route Safe Altitude (ESA), or Estimated Time of Arrival (ETA).
Origin and Destination Waypoints
Active Leg Navigation
Flight Plan Menu Options
Up/Down Keys to Scroll FPL
Parallel Track Active
DTK Between Legs *
DIST Between Legs *
Figure 4-7 Active Flight Plan Page
* The field types may be changed using the Edit Data Fields function in the
Flight Plan page Menu.
4.2.1 Waypoint Options
1. While viewing the Active Flight Plan page, touch the desired
flight plan waypoint. The Waypoint Options menu opens.
Waypoint Options
For KLAX
Figure 4-8 Active Flight Plan Wpt Options
2. Touch one of the options to perform the selected action. Cancel
the option selection by touching the Back key.

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Foreword
Getting
Started
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Com/Nav
FPL
Direct-To
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Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.2.1.2 Insert Before
The Insert Before option allows you to insert a new waypoint into the active
flight plan before the selected waypoint.
1. On the Active Flight Plan page, touch the desired waypoint in
the flight plan. The Waypoint Options list will be displayed.
Insert Before
Option Was
Selected
Option Will Insert
New Waypoint
Before This
Selected Flight
Plan Waypoint
Figure 4-11 Active Flight Plan Insert Waypoint Before Option
2. Touch the Insert Before key to select a new waypoint before
the selected waypoint.
3. Select a waypoint identifier with the alphanumeric keypad.
Choose New Waypoint
To Insert Before
Selected Flight Plan
Waypoint
Figure 4-12 Use the Alphanumeric Keypad to Select Waypoint to Insert Before
4. Then, touch Enter to confirm the selection or touch Cancel
to cancel any changes. The new flight plan will be shown.
New Waypoint
Inserted Before
Selected Flight
Plan Waypoint
Figure 4-13 New Waypoint Is Inserted Before the Selected Waypoint

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Foreword
Getting
Started
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FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
Selected Flight
Plan Waypoint
New Flight
Plan Waypoint
Figure 4-14 Flight Plan Before and After New Waypoint Inserted
4.2.1.3 Insert After
The Insert After option allows you to insert a new waypoint into the active
flight plan after the selected waypoint.
1. On the Active Flight Plan page, touch the desired waypoint in
the flight plan. The Waypoint Options list will be displayed.
2. Touch the Insert After key to select a new waypoint after the
selected waypoint.
3. Select a waypoint identifier with the alphanumeric keypad.
Then, touch Enter to confirm the selection, or touch the
Cancel key to cancel the operation and return to theWaypoint
Options window.
4.2.1.4 Along Track Offsets
NOTE: This feature is available in software v6.50 and later.
An along track (ATK) represents a temporary lateral position (or checkpoint)
relative to an existing waypoint in the flight plan. Offset distance values range
between 1 nm and 200 nm, and may be specified in 1 nm increments.
Unlike database waypoints, ATKs indicate a temporary route fix in the flight
plan. Once created, their position remains fixed until deleted by the pilot.
Subsequent changes to the flight plan do not update the ATK's position.
ATKs appear in flight plan route depictions on the Active Flight Plan and
Map pages.

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Foreword
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Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
ATK Identifier
And Distance From
Reference Waypoint
Reference Waypoint
Figure 4-15 ATK Inserted Before Reference Waypoint
Inserting the ATK before the selected waypoint results in a negative offset
value. Inserting it after the selected waypoint results in a positive value. The
flight plan allows multiple entries.
Selecting Before
Automatically
Assigns A
Negative Value
Figure 4-16 Along Track Offset Keypad
Once entered, offset distances are not editable. If the offset requires
adjustment, delete the existing ATK from the flight plan, and then create a new
ATK with the correct offset distance.
Map indications include a dedicated icon and an identifier label.
The identifier label denotes the adjacent waypoint's ID and offset
distance from the specified ATK.
ATK Icon Offset Identifier
Label
Figure 4-17 ATK Indications on Map Page

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Foreword
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Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
To create an ATK:
1. While viewing the Active Flight Plan page, select a waypoint.
The Waypoint Options menu opens.
2. Touch the Along Track key.
3. Specify an offset distance using the controls on the keypad.
4. Select Before or After to place the ATK before or after the
reference waypoint.
5. Touch Enter.
To create an ATK for an altitude constraint:
1. While viewing the Active Flight Plan page, select an altitude
constraint. The VNAV Options menu opens.
2. Touch the Along Track key.
3. Specify an offset distance using the controls on the keypad.
4. Select Before or After to place the ATK before or after the
reference waypoint.
5. Touch Enter and then Save.
4.2.1.5 Remove
The Remove option allows you to remove the selected waypoint from the
active flight plan.
1. On the Active Flight Plan page, touch the desired waypoint in
the flight plan. The Waypoint Options menu opens.
2. Touch Remove and then OK.

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Foreword
Getting
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FPL
Direct-To
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Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.3 Flight Plan Menu
The Flight Plan menu provides access to functions to manage your flight
plans. The functions included are: View Catalog, Store Flight Plan, Delete Flight
Plan, Preview Flight Plan, Parallel Track, Invert Flight Plan, and Edit Data Fields.
Touch the Menu key to access Flight Plan menu options.
Touch To Invert
The Active
Flight Plan
Touch To Delete The
Active Flight Plan
Touch To View
List Of Stored
Flight Plans
Touch To Store
The Active
Flight Plan
Touch To View A
Map And A List Of
Waypoints For The
Active Flight Plan
Touch To Edit The
Active Flight Plan
Information Fields
Touch To View
VNAV Profile Page
Touch To Add Parallel
Track Course Offsets
Touch To
Adjust Altitude
Temperature
Compensation
Figure 4-43 Flight Plan Menu
Menu
InvertStore
Activate
Invert & Activate
Preview
Edit
Copy
Delete
Route Options
Catalog Delete Preview Parallel
Track
Direction
Offset
Activate
Edit
Data
Fields
Column 1
Column 2
Column 3
Restore
Defaults
VNAV
VS Target
Flight Path Angle
VNAV Enabled
Destination
Temperature
Temperature
Compensation
TEMP at DEST
Figure 4-44 Flight Plan Menu Functional Diagram

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Foreword
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Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.3.1 Store Flight Plan
A flight plan must be saved to the Catalog to be used in future flights. The
Store Flight Plan function will save the Active Flight Plan to the Catalog.
NOTE: If a flight plan that includes a procedure that has been modified
by the pilot is saved into the flight plan catalog, the GTN cannot check the
accuracy of that procedure when that flight plan is used on a later flight. It
is recommended that flight plans with modified procedures not be saved
in the flight plan catalog.
1. While viewing the Active Flight Plan page, touch the Menu
key. The Flight Plan menu opens.
2. Touch the Store key to store the currentActive Flight Plan into
the Catalog. The flight plan will be named by the beginning
and ending waypoints.
3. When a duplicate flight plan is created, the Store key will not
be available and the flight plan will be saved with a numeral
at the end of the destination waypoint.
Original Flight Plan
Duplicate Flight Plan
Figure 4-45 Duplicate Flight Plan Naming
4.3.2 Invert Flight Plan
NOTE: Inverting a flight plan removes all ATKs.
This option allows you to reverse the active flight plan and use it for navigation
guidance back to your original departure point. The original flight plan stored in
the catalog is not affected.
1. While viewing the Active Flight Plan page, touch the Menu
key. The Flight Plan menu opens.
2. Touch Invert.

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Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.3.3 En Route Vertical Navigation
NOTE: This feature is available in software v6.50 and later.
The vertical navigation (VNAV) feature provides vertical profile
guidance during the descent phase of flight. Guidance is based on altitude
constraints associated with lateral waypoints in the active flight plan.
Functions:
• Presents vertical path guidance to the descending path as either a line
joining two waypoints with specified altitudes or a linear deviation from the
desired path (i.e., the vertical angle from the specified waypoint or altitude)
• Integrate vertical waypoints into the active flight plan
• Support both manual and autopilot coupling
4.3.3.1 VNAV Requirements
• Enablement by the installer
• A baro-corrected altitude source
If en route vertical navigation is not enabled, the GTN provides a single
waypoint vertical calculator. For more information, refer to section 14.1.
For installation details related to en route vertical navigation, consult the
AFMS.
4.3.3.2 VNAV Limitations
The GTN allows you to create a vertical navigation path with multiple altitude
constraints in the flight plan. These altitudes are removed when the flight plan
is stored in the flight plan catalog.
Most flight plan waypoints may be assigned an altitude constraint for use in
vertical navigation. Exceptions include:
• Flight plan legs containing headings
• Flight plan legs that terminate at an altitude (e.g., a climb to 1,800 ft before
making a turn and proceeding direct to fix)

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Utilities
System
Messages
Symbols
Appendix
Index
4.3.3.3 VNAV Profile Page
Active vertical navigation profile information displays on the VNAV Profile
page. This page is accessible from both the Flight Plan menu and the Utilities
page.
Touch to Select
Target Vertical Speed
Touch to
Toggle VNAV
On or Off
Touch to
Select Flight
Path Angle
Figure 4-46 VNAV Profile Page
To enable VNAV guidance:
1. While viewing the Active Flight Plan page, touch Menu.
2. Select VNAV. The VNAV Profile page opens.
3. Touch VNAV Enabled.
To disable VNAV guidance, touch VNAV Enabled again.
Disabling vertical navigation:
• Invalidates required vertical speed, time to Top of Descent (TOD)/Bottom of
Descent (BOD), and vertical deviation data
• Removes vertical deviation and required vertical speed indications from the
PFD
VS Required,Time to TOD/BOD,
and Vertical Deviation fields
display dashes when VNAV is off
VNAV automatically re-enables when the pilot initiates a Direct-To.

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Terrain
Weather
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Services/
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Utilities
System
Messages
Symbols
Appendix
Index
4.3.3.4 Altitude Constraints
NOTE: Altitude constraints loaded from the database are jet altitudes.
Some adjustment may be necessary for other types of aircraft. For the
adjustment procedure, refer to the published chart.
Depending on the specific instance, altitude constraints are either manually
entered into the Active Flight Plan page, or automatically retrieved from the
published altitudes in the navigation database.
Constraint values display in MSL or flight level (FL). Constraints at airports
may be specified as MSL or AGL.
White Text Only
(No Constraint)
Cyan Text with Restriction
Bars and Pencil Icon
(Modified Constraint)
Cyan Text with Snowflake Icon
(Constraint with Temperature
Compensated)
Figure 4-47 Waypoint Altitude Constraints
The system automatically uses altitudes loaded with arrival and approach
procedures (up to and including the FAF) for computing vertical deviation
guidance. These values, accompanied by an altitude restriction bar(s), display
in cyan. The position of the value (above or below the bar, or between two
bars) denotes the required aircraft altitude relative to that constraint. Dual values
annunciate when the aircraft needs to cross between two altitudes.
Cross At or Above
5,000 ft
Cross At or Below
5,000 ft
Cross At 5,000 ft Cross Between
5,000 ft and 6,000 ft
Figure 4-48 Altitude Constraint Examples

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Appendix
Index
Indication Color Description
White
• Altitude calculated by system
• Estimate of aircraft altitude as it passes over the
navigation point
• Absence of bar(s) indicates it is not a potential
constraint
• Altitude retrieved from navigation database
• Bar above and/or below the value indicates
constraint type
• Altitude is for reference only. Not for use in
determining vertical guidance
Cyan
• Altitude designated for use in determining vertical
guidance
• Pencil icon indicates manual designation or manual
data entry
• Constraint invalid
• System cannot use altitude to determine vertical
guidance
Table 4-1 Altitude Constraint Color Conventions
An altitude constraint is invalid if:
• Meeting the constraint requires the aircraft to climb
• Meeting the constraint requires the aircraft to exceed the maximum flight
path angle (6° downward) or maximum vertical speed (-4,000 fpm)
• It results in a TOD behind the aircraft's current position
• It is within a leg type that does not support altitude constraints
• It is added to a waypoint past the FAF

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Terrain
Weather
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Symbols
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The altitude restriction from the database displays when the following three
conditions are present.
1. A pilot-specified altitude constraint is deleted
2. Navigation database contains an altitude restriction for the lateral
waypoint
3. A predicted altitude is not available
Once added to the flight plan, an altitude constraint may be modified or
deleted using the controls in the VNAV Options menu. Select a value in the ALT
column to display available options.
Selection Function
Type
• Opens a list of available constraint types
• Options: At, At or Above, At or Below, and Between
Altitude
Data Entry
• Opens a keypad. Specify an altitude value for the selected
constraint type
• Unit options: MSL, AGL, and Flight Level
Revert
Constraint
• Returns a modified altitude constraint to its original published
value
Remove
Constraint
• Removes the VNAV designation from the altitude
• Value remains displayed for reference purposes. It is no longer
used to compute vertical guidance
• Removing the VNAV designation from an altitude may
invalidate other displayed altitudes or cause them to change
after recalculation
Table 4-2 Altitude Constraint Options