Garmin | GTN™ 750 | Garmin GTN™ 750 GTN 725/750 SW v6.50 Upgrade Supplement

Garmin GTN™ 750 GTN 725/750 SW v6.50 Upgrade Supplement
GTN 725/750 SOFTWARE v6.50
PILOT’S GUIDE UPGRADE SUPPLEMENT
This supplement contains the pages revised in the GTN 725/750 Pilot’s Guide,
P/N 190-01007-03, Rev. Q, 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 725/750 Pilot’s Guide,
P/N 190-01007-03, Rev. P, is equivalent to the GTN 725/750 Pilot’s Guide,
P/N 190-01007-03, Rev. Q.
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 725/750 Pilot’s Guide,
P/N 190-01007-03.
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 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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Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a
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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.
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For information regarding the Aviation Limited Warranty, refer to Garmin’s website.
For aviation product support, visit flyGarmin.com.
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 Rev. A
GTN 725/750 Pilot’s Guide Revision Q, Change Summary
Section
Page
4
4-1
4.2.1
4-5
4.2.1.4
4.2.1.5
4-9
4-12
4.3
4-28
4.3.2
4.3.3
4.3.4
4.3.5
4-30
4-37
4-38
4.3.6
4-41
4.3.7.2
4-44
Description
Section 4 – Flight Plans
Updated menu options in figure 4-1, “Flight Plan Functional
Diagram.”
Updated screen image in figure 4-6, “Active Flight Plan Wpt
Options with SAR Available.”
Added “Along Track Offsets” section.
Revised sequence steps for clarity.
Updated screen image in figure 4-38, “Flight Plan Menu.”
Updated menu options in figure 4-39, “Flight Plan Menu
Functional Diagram.”
Added note regarding removal of ATKs.
Added “En Route Vertical Navigation” section.
Added “Temperature Compensated Altitude” section.
Added note regarding en route vertical navigation availability.
Added Altitude and Flight Path Angle to list of
user-selectable data fields.
Added information related to VNAV functionality.
Added note regarding the removal of ATKs.
Section 5 – Direct-To
5.5
5-8
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
6.2
6-4
6.3
6-9
6.4
6-10
6-13
Revised note regarding bar-corrected altitude to include en
route vertical navigation.
Added note regarding advisory climb altitudes.
Added note about verifying altitudes when using Descent
VNAV.
Added note about verifying altitudes (including ATC cleared
altitudes) when using Descent VNAV.
Added table 6-2, “Loading and Activating an Approach.”
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 Rev. A
Section
Page
8.7
8-16
8.8
8-19
8-20
8.8.2
8-21
8.9
8-24
Description
Section 8 – Waypoint Info
Added note pertaining to user airport feature availability.
Added information related to user airports.
Updated screen image in figure 8-23, “Waypoint Info - Create
User Waypoint.”
Updated Create Waypoint key icon.
Updated screen image in figure 8-24, “Waypoint Info - Create
User Waypoint Name.”
Added steps 4 and 8. Includes associated key icons.
Updated screen image in figure 8-27, “Waypoint Info - Set
Lat/Lon Coordinate Selection.”
Added information about overwriting existing user waypoints
during import.
Section 9 – Map
9
9-2
9.1.2
9-13
9.1.2.1
9-15
9-20
9.6
9-51
Updated OBS key icon in figure 9-2, “Map Page Functional
Diagram.”
Added Altitude Constraints menu option to figure 9-13,
“Map Setup Functional Diagram.”
Added Altitude Constraint feature to table 9-1, “Map Setup
Map Options.”
Added “Altitude Constraints” subsection.
Added User Airport, TOD/BOD, and ATK to table 9-18,
“Map Symbols.”
Section 10 – Traffic
10.5.2
10.5.2.1
10-19
Updated screen image in figure 10-11, “ADS-B Traffic Menu.”
Added “ADS-B Display” subsection.
Section 11 – Terrain
11.1
11.2
11.5
11-1
11-2
11-10
Added table 11-1, “Terrain Configurations.”
Added “GPS Altitude for Terrain” section.
Added “Terrain Alerting” section.
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 Rev. A
Section
Page
12.3.1
12-33
12.3.5
12-41
12.4
12-45
12.4.1
12-46
12.4.2
12-47
12.4.7
12-52
12.4.7.1
12-53
12.4.7.2
12.4.7.4
12.4.7.5
12-54
12.4.7.7
12-55
12.5
12-57
12.5.4
12-61
Description
Section 12 – Weather
Revised description to include GWX 75/80.
Updated approximate intensity values for red and magenta in
table 12-29, “Precipitation Intensity Levels.”
Added GWX 75/80 to figure 12-59, “Weather Radar
Functional Diagram.”
Updated screen image in figure 12-60, “Weather Radar Page
(Horizontal Scan).”
Added GWX 75/80 precipitation color values to figure 12-61,
“Weather Radar Precipitation Scale.”
Changed section title to “Weather Radar Modes.”
Updated screen images in figure 12-68, “Weather Radar Menu
Selections.”
Revised note to address legacy software.
Updated screen image in figure 12-69, “Horizontal Scan with
WATCH.”
Changed section title to “Weather Messages.”
Updated screen image in figure 12-70, “Weather Alert
Display.”
Changed section title to reflect GWX 75/80 applicability.
Added GWX 75/80 to figure 12-71, “Sector Scan Mode.”
Updated screen image in figure 12-72, “Selected Sector Scan
Range.”
Updated hyperlink to Connext weather page on Garmin
website.
Revised Connext Weather activation information.
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 Rev. A
Section
Page
15-1
15
15-3
15.1
15-4
Description
Section 15 – Utilities
Updated screen image in figure 15-1, “Utilities Home Page.”
Added table 15-4, “Utilities Page Features.” Includes
descriptions for VNAV and Logs pages.
Added VNAV and Logs menu options to figure 15-2, “Utilities
Functional Diagram.”
Added note regarding feature/page exclusivity.
Section 16 – System
16
16.4
16-2
16-15
16-16
16.4.3
16-19
16-20
16.4.4.2
16-21
16.4.4.3
16.4.5
16-22
16-23
16.7
16-32
Added Keyboard to Setup menu options in figure 16-2,
“System Function Summary.”
Added Keyboard to list of System Setup page functions.
Added COM Sidetone Control and Keyboard menu options to
figure 16-16, “System Setup Functions.”
Updated screen image in figure 16-17, “System Setup Page.”
Added information regarding Include User Airports function.
Updated screen image in figure 16-22, “Select Nearest Airport
Criteria.”
Added step 5 to reflect addition of Include User Airports key.
Updated screen image in figure 16-25, “Reverse Frequency
Lookup Selected.”
Added “COM Sidetone Control” section.
Added “Keyboard Format” section.
Added unit values for Position Format to table 16-9,
“System Units Setup.”
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 Rev. A
Section
Page
16-36
16.7.3
16-37
16.11.2
16-43
Description
Added list of available position formats.
Added information about regional position formats.
Added figure 16-44, “British National Grid Position Format
Detail.”
Added figure 16-45, “Irish National Grid Position Format
Detail.”
Added figure 16-45, “Swiss National Grid Position Format
Detail.”
Updated screen image in figure 16-47, “Position Format
Selection.”
Added information about passkey verification.
Section 17 – Messages
17
17-25
Added VNAV related messages to table 17-1, “Messages.”
Section 18 – Symbols
18.1
18-1
Added User Airport, TOD/BOD, and ATK to table 18-1,
“Map Page Symbols.”
Section 19 – Appendix
19.4
19-21
Rewrote “Glove Qualification Procedure” section.
GTN 725/750 SW v6.50 Pilot’s Guide Upgrade Supplement
190-01007-19 Rev. A
4
FLIGHT PLANS
The GTN 7XX 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.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
Menu
Active FPL
Waypoint
Options
Activate Leg
Insert Before
Insert After
Load Procedures*
Load SAR**
Hold at Waypoint
Load Airway***
Waypoint Info
Remove
FPL
Add Waypoint
Catalog
Store
Delete
Preview
Parallel Track
Invert
VNAV
Temperature
Compensation
Edit Data Fields
Select Waypoint
Find
Recent
Nearest
Flight Plan
User
Search by Name
Search by City
Direct-To
Proc
Charts
Wpt Info
Map
* "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
Traffic
Terrain
Figure 4-1 Flight Plan Functional Diagram
NOTE: Navigation is provided for fixed wing aircraft above 30 kts and for
rotorcraft above 10 kts.
Weather
Nearest
NOTE: The Chart feature provides a digital representation of a paper
chart and provides no vertical or lateral course guidance. Flight Plan and
Procedures are separate from Charts, and do provide vertical and lateral
course guidance for the loaded route or procedure shown on the Flight
Plan page. The term “Chart Unavailable” means that the chart cannot be
viewed on the Charts due to either a chart not being published, or an error
in the Chart database, but does not preclude its availability or inclusion of
the procedure in the Flight Plan or Procedures portion of the system. The
absence of a chart for a particular Departure, Arrival, or Approach does
not preclude its availability or inclusion in the Flight Plan or Procedures
portion of the system. The absence of a particular Departure, Arrival, or
Approach under the Flight Plan or Procedures portion of the system does
not preclude the ability to view the Chart for that procedure under the
Chart feature.
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-1
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4.2.1
Waypoint Options
Foreword
1. While viewing the Active Flight Plan page, touch the desired
flight plan waypoint. The Waypoint Options window menu
opens.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Figure 4-6 Active Flight Plan Wpt Options with SAR Available
Map
2. Touch one of the options to perform the selected action. Cancel
the option selection by touching the Back key.
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-5
Index
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 the Waypoint
Options window.
4.2.1.4
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Along Track Offsets
Charts
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.
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
ATK Identifier
And Distance From
Reference Waypoint
System
Reference Waypoint
Messages
Symbols
Figure 4-13 ATK Inserted Before Reference Waypoint
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-9
Index
Foreword
Getting
Started
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
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Figure 4-14 Along Track Offset Keypad
Map
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.
Traffic
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.
Terrain
Weather
Nearest
Services/
Music
Offset Identifier
Label
ATK Icon
Utilities
System
Messages
Active ATK
Annunciation
Symbols
Figure 4-15 ATK Indications on Map Page
Appendix
Index
4-10
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
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.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
4. Select Before or After to place the ATK before or after the
reference waypoint.
Com/Nav
5. Touch Enter.
Direct-To
FPL
Proc
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.
Charts
Wpt Info
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.
Map
Traffic
Terrain
5. Touch Enter and then Save.
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-11
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
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.
FPL
Direct-To
Waypoint Selected
To Be Removed
Proc
Touch OK
To Remove
Waypoint
Charts
Wpt Info
Touch Cancel To
Cancel The Operation
And Return To the
Flight Plan View
Map
Traffic
Figure 4-16 Active Flight Plan Remove Waypoint Option
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4-12
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Getting
Started
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.
Audio &
Xpdr Ctrl
Touch the Menu key to access Flight Plan menu options.
Com/Nav
Touch To Add
Parallel Track
Course Offsets
FPL
Direct-To
Proc
Charts
Wpt Info
Touch To Store The
Active Flight Plan
Touch To Delete
The Active
Flight Plan
Touch To Invert
The Active
Flight Plan
Touch To View
List Of Stored
Flight Plans
Touch To View A
Map And A List Of
Waypoints For The
Active Flight Plan
Touch To
Adjust Altitude
Temperature
Compensation
Touch To View
VNAV Profile
Page
Map
Touch To Edit The
Active Flight Plan
Information Fields
Traffic
Figure 4-38 Flight Plan Menu
Terrain
Menu
Weather
Catalog
Nearest
Delete
Preview
Route Options
Services/
Music
Activate
Invert & Activate
Preview
Edit
VNAV
Copy
Delete
VS Target
Flight Path Angle
VNAV Enabled
Utilities
System
Messages
Symbols
Parallel
Track
Invert
Direction
Offset
Activate
Destination
Temperature
Edit
Data
Fields
Column 1
Column 2
Column 3
Restore
Defaults
Temperature
Compensation
TEMP at DEST
Figure 4-39 Flight Plan Menu Functional Diagram
Appendix
Index
Store
4-28
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
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.
Direct-To
Proc
4.3.3
NOTE: This feature is available in software v6.50 and later.
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
En Route Vertical Navigation
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)
• Integrates vertical waypoints into the active flight plan
• Supports 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 15.1.
For installation details related to en route vertical navigation, consult the
AFMS.
Symbols
Appendix
Index
4-30
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
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:
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
• 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)
4.3.3.3
FPL
Direct-To
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.
Proc
Charts
Wpt Info
Map
Traffic
Touch to
Select Flight
Path Angle
Touch to
Select Target
Vertical Speed
Terrain
Weather
Nearest
Touch to Toggle
VNAV On or Off
Services/
Music
Figure 4-41 VNAV Profile Page
To enable VNAV guidance:
1. While viewing the Active Flight Plan page, touch Menu.
Utilities
System
2. Select VNAV. The VNAV Profile page opens.
Messages
3. Touch VNAV Enabled.
Symbols
Appendix
To disable VNAV guidance, touch VNAV Enabled again.
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-31
Index
Foreword
Disabling vertical navigation:
Getting
Started
• Invalidates required vertical speed, time to Top of Descent (TOD)/Bottom of
Descent (BOD), and vertical deviation data
Audio &
Xpdr Ctrl
• 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
Com/Nav
FPL
Direct-To
VNAV automatically re-enables when the pilot initiates a Direct-To.
4.3.3.4
Proc
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.
Charts
Wpt Info
Map
Traffic
Altitude Constraints
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.
Terrain
Weather
White Text Only
(No Constraint)
Nearest
Cyan Text with Restriction
Bar and Pencil Icon
(Modified Constraint)
Services/
Music
Utilities
Cyan Text with Snowflake Icon
(Constraint with Temperature
Compensated)
System
Messages
Symbols
Appendix
Index
Figure 4-42 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.
4-32
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Cross At or Above
5,000 ft
Cross At or Below
5,000 ft
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
Cross At 5,000 ft
Cross Between
5,000 ft and 6,000 ft
FPL
Figure 4-43 Altitude Constraint Examples
Indication
Color
Direct-To
Description
• Altitude calculated by system
Proc
• Estimate of aircraft altitude as it passes over the
navigation point
Charts
Wpt Info
• Absence of bar(s) indicates it is not a potential
constraint
White
• Altitude retrieved from navigation database
Map
• Bar above and/or below the value indicates
constraint type
Traffic
• Altitude is for reference only. Not for use in
determining vertical guidance
• Altitude designated for use in determining vertical
guidance
Cyan
• Pencil icon indicates manual designation or manual
data entry
• Constraint invalid
• System cannot use altitude to determine vertical
guidance
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Table 4-6 Altitude Constraint Color Conventions
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-33
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
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
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.
Traffic
Terrain
Selection
Type
Weather
Nearest
Services/
Music
Altitude
Data Entry
Revert
Constraint
Utilities
System
Messages
Remove
Constraint
Symbols
• Options: At, At or Above, At or Below, and Between
• Opens a keypad. Specify an altitude value for the selected
constraint type
• Unit options: MSL, AGL, and Flight Level
• Returns a modified altitude constraint to its original published
value
• 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 4-7 Altitude Constraint Options
Appendix
Index
Function
• Opens a list of available constraint types
4-34
GTN 725/750 Pilot’s Guide
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To designate a waypoint altitude for use with vertical guidance:
1. Select a waypoint altitude constraint.
Foreword
2. Touch Save.
Getting
Started
The altitude color changes to cyan, indicating it is usable for vertical guidance.
To enter or modify an altitude constraint:
1. Select an altitude constraint.
Audio &
Xpdr Ctrl
Com/Nav
FPL
2. Touch Type and select the constraint type.
Direct-To
3. Select the altitude data key. Enter an altitude constraint value
using the keypad. Touching Flight Level enters the value as
a flight level.
4. Touch Enter to accept the altitude.
Proc
Charts
Wpt Info
Map
5. Touch Save.
Traffic
To delete an altitude constraint:
1. Select an altitude constraint.
Terrain
2. Touch Remove Constraint.
Weather
3. Confirm the request by selecting OK.
Nearest
To return a modified altitude constraint to its original database value:
1. Select an altitude constraint containing the pencil icon.
Services/
Music
2. Touch Revert Constraint.
Utilities
3. Confirm the request by selecting OK.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-35
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
4.3.3.5
VNAV Direct-To
The VNAV Direct-To function creates a vertical navigation path from the
aircraft's current position and altitude to a selected waypoint's location and
altitude. By removing any VNAV constraints between the aircraft and the selected
waypoint, it allows the pilot to fly the lateral flight plan in a continuous descent
and reach the waypoint at the specified altitude.
To initiate a VNAV Direct-To:
1. Select an altitude constraint.
2. Touch VNAV Direct-To.
Direct-To
Proc
Charts
3. Confirm the request by selecting OK.
4.3.3.6
Function availability dependent on installer configuration. For more
information, refer to the AFMS.
Approach Type
Wpt Info
Map
Traffic
Transition to Approach
Transition to Approach
Enabled
Terrain
Weather
Transition to Approach
Not Enabled
VNAV Response
• Vertical path attempts a smooth transition from
en route to approach vertical guidance
• Aircraft intercepts with approach guidance from
below the glidepath/glideslope
• En route VNAV terminates at the waypoint prior
to the FAF on approaches with vertical guidance
• En route VNAV terminates at the FAF (LNAV only)
Table 4-8 VNAV Approach Response
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
4-36
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
4.3.4
Temperature Compensated Altitude
Foreword
NOTE: GTNs and TXi displays use only one destination airport temperature
for calculating compensated altitudes. Changing the temperature on one
of these units automatically recalculates the value across all connected
GTNs and GDUs.
A temperature compensation function calculates loaded approach altitudes
based on the pilot-specified destination temperature. Once the pilot enters a
destination temperature, the system increases the approach altitudes accordingly.
4.3.4.1
Temperature Compensation Requirements
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
• A destination airport is present in the active flight plan
Proc
• GDU 700( )/1060 for access via PFD Minimums menu
4.3.4.2
Charts
Setting Temperature Compensated Altitude
Temperature compensation controls are accessible from two locations:
Wpt Info
• Destination Temperature Compensation window
Map
• Minimums menu (PFD only)
Traffic
Snowflake
Icon Indicates
Temperature
Compensated
FAF Altitude.
Uncompensated
FAF Altitude
Touch to
Enable/Disable
Temperature
Compensation
Terrain
Weather
Touch to Enter
Destination
Temperature
Nearest
Figure 4-44 Destination Temperature Compensation Window
Services/
Music
To activate temperature compensated altitude:
1. While viewing the Active Flight Plan page, touch Menu.
Utilities
2. Touch TEMP COMP. The Destination Temperature
Compensation pop-up opens.
3. Touch Temperature Compensation.
4. Touch TEMP at DEST and specify the destination airport
temperature.
The temperature compensated FAF altitude displays in magenta.
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-37
System
Messages
Symbols
Appendix
Index
Foreword
4.3.5
NOTE: En route vertical navigation is unavailable while the parallel track
function is active.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Parallel Track
Parallel track allows you to create a parallel course offset of 1 to 99 NM to
the left or right of your current flight plan. After setting a parallel track to your
current flight plan, a magenta parallel track line will be drawn offset from the
original by the selected distance. The original course line will be drawn in gray.
The aircraft will navigate to the parallel track course line and external CDI/HSI
guidance will be driven from the parallel track.
When you reach the end of the flight plan, a message will state, “Parallel
offset terminating in X seconds.” The message will be given when the aircraft
reaches the offset distance from the end of the parallel track. This will give the
pilot sufficient time to intercept the original course.
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Figure 4-45 Parallel Track Description
Messages
NOTE: In software v6.21 and earlier, graphically editing a flight plan
cancels the parallel track function.
Symbols
Appendix
Index
4-38
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
4.3.6
Edit Data Fields
The Active Flight Plan Page shows each waypoint for the flight plan, along
with the Desired Track (DTK), Distance (DIS) for each leg, and Cumulative
Distance (CUM). Data fields are user-selectable and may be changed to display:
Foreword
Getting
Started
ALT - Altitude
ESA - En Route Safe Altitude
Audio &
Xpdr Ctrl
CUM - Cumulative Distance
ETA - Estimated Time of Arrival
Com/Nav
DIS - Distance
ETE - Estimated Time En route
DTK - Desired Track
FPA - Flight Path Angle
FPL
When configured for VNAV, the GTN automatically selects the altitude data
field for the first column.
Cumulative Dist Between
Current Position and Next Wpt
Direct-To
Proc
Charts
DIST Between Legs
DTK Between Legs
Wpt Info
Origin and Destination Waypoints
Map
Current Flight Plan Leg
Traffic
Terrain
Figure 4-49 Flight Plan Data Fields
Weather
1. While viewing the Flight Plan page, touch the Menu key, and
then the Edit Data Fields key.
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
4-41
Index
3. Touch the Route Option key for the desired option to act on
the selected flight plan.
Foreword
Getting
Started
4.3.7.1
Audio &
Xpdr Ctrl
Com/Nav
FPL
Catalog Route Option - Activate
1. While viewing the Flight Plan Catalog page, touch the desired
flight plan to select it. The Route Options menu will be
displayed.
2. Touch the Activate key and then touch OK. The selected flight
plan will be activated.
Direct-To
Proc
Charts
Figure 4-54 Touch OK to Replace the Existing Active Flight Plan
Wpt Info
3. The Active Flight Plan page will now be displayed.
Map
4.3.7.2
Traffic
Catalog Route Option - Invert & Activate
NOTE: Inverting a flight plan removes all ATKs.
Terrain
1. While viewing the Flight Plan Catalog page, touch the desired
flight plan to select it. The Route Options menu will be
displayed.
Weather
2. Touch the Invert & Activate key and then touch OK. The
selected flight plan will be inverted and activated.
Nearest
Services/
Music
Utilities
System
Messages
Figure 4-55 Touch OK to Invert and Activate the Selected Flight Plan
Symbols
Appendix
Index
4-44
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
5.5
Direct-To Map Waypoint
A Direct-To course may be set to any waypoint selected on the Map page. The
waypoint is selected by touching an item such as an airport, VOR, or NDB or
any other location. Touching the map page at any place not having an existing
location name will create a waypoint with the name “MAPWPT.” Touching the
Direct-To key will automatically insert the selected waypoint as the Direct-To
waypoint.
1. On the Map page, touch the map at the location intended to
be the Direct-To waypoint.
FPL
Direct-To
2. Press the Direct-To key on the right side of the unit.
Proc
Charts
Waypoint Tab
Wpt Info
Direct-To
Waypoint Name
Map
Traffic
Terrain
Weather
Touch To
Remove The
Direct-To Course
Nearest
Services/
Music
Touch To
Activate The
Direct-To Course
Figure 5-9 Touch the Map to Create a MAPWPT as the Direct-To Course Destination
3. Touch the Activate key or press the small right knob to
activate the selection.
Utilities
System
Messages
Symbols
Appendix
Index
5-8
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
6
PROCEDURES
Foreword
The GTN 7XX allows you to fly non-precision and precision approaches to
airports with published instrument approach procedures. The system can also
provide visual approach guidance to most airports. Approach procedures are not
the same as the approach plates available in ChartView or FliteCharts, which are
separate databases.
The Procedures Page is displayed by touching the PROC key on the Home
page. The Procedures Page provides access to approaches, departures and
arrivals. Selections are also shown to: Activate Approach, Vectors to Final, and
Activate Missed Approach.
NOTE: With the exception of Charted Visual Flight Procedures (CVFPs),
visual approaches do not have associated approach charts.
NOTE: The Chart feature provides a digital representation of a paper
chart and provides no vertical or lateral course guidance. Flight Plan and
Procedures are separate from Charts, and do provide vertical and lateral
course guidance for the loaded route or procedure shown on the Flight
Plan page. The term “Chart Unavailable” means that the chart cannot be
viewed on the Charts due to either a chart not being published, or an error
in the Chart database, but does not preclude its availability or inclusion of
the procedure in the Flight Plan or Procedures portion of the system. The
absence of a chart for a particular Departure, Arrival, or Approach does
not preclude its availability or inclusion in the Flight Plan or Procedures
portion of the system. The absence of a particular Departure, Arrival, or
Approach under the Flight Plan or Procedures portion of the system does
not preclude the ability to view the Chart for that procedure under the
Chart feature.
NOTE: Baro-corrected altitude is not required by the GTN unit to
meet the requirements of TSO-C146c; however, to take full advantage
of the GTN unit's capabilities, an optional baro-corrected altitude
source is recommended for (1) automatic sequencing of altitude leg
types, and (2) en route vertical navigation. If the GTN does not receive
baro-corrected altitude data, altitude leg types require manual sequencing,
and en route vertical navigation is not available.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
6-1
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
6.2
Selecting a Departure
A Departure Procedure (DP) is loaded at the departure airport in the flight
plan. Only one departure can be loaded at a time in a flight plan. If a departure
is loaded when another departure is already in the active flight plan, the new
departure replaces the previous departure. The route is defined by selection of a
departure, the transition waypoint, and a runway.
NOTE: Vector-only departures are not available in the Procedures database
as the GTN 7XX cannot provide navigational guidance on vectored legs.
FPL
1. Touch the PROC key on the Home page and then touch the
Departure key to display the Departure list.
Direct-To
Proc
2. If necessary, touch the Airport key and enter the departure
airport. Touch the key for the desired Departure.
Charts
Wpt Info
Map
Touch To Select
Desired Departure
Traffic
Terrain
Weather
Nearest
Services/
Music
Figure 6-2 List for Selecting a Departure
NOTE: Advisory climb altitudes for SIDs may not match charted altitudes.
Do not rely solely on GTN advisory altitudes.
Utilities
System
Messages
Symbols
Appendix
Index
6-4
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
6. Touch the Load Arrival key. The Active Flight Plan page will
be displayed.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Touch To Select
Or Remove
Arrival
Com/Nav
FPL
Touch To Edit
Waypoint
Direct-To
Scroll To View
Flight Plan
With Departure
Waypoints
Proc
Charts
Figure 6-11 Flight Plan With Arrival Loaded
NOTE: If using Descent VNAV, verify that the altitudes for the selected
procedure match the charted altitudes and are appropriate for the airframe
type.
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
6-9
Index
Foreword
6.4
NOTE: In software v6.21 and later, the pilot may load an alternate approach
during a missed approach procedure. The GTN retains all missed approaches
in the flight plan.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Selecting an Approach
Only one approach can be loaded at a time in a flight plan. If an approach
is loaded when another approach is already in the active flight plan, the new
approach replaces the previous approach. The route is defined by selection of an
approach, the transition waypoint, and a runway.
1. Touch the PROC key on the Home page. The Approach, Arrival,
and Departure fields will be dashed until a selection is made.
Proc
Touch To View
Available Departures
Charts
Touch To View
Available Arrivals
Wpt Info
Touch To View
Available Approaches
Map
Traffic
Terrain
Weather
Figure 6-12 Procedures Selection Window
2. Touch the Approach key on the Procedures page to select
an approach for the destination airport. Confirm that the
intended airport is shown or touch the Airport key and select
the desired airport.
Nearest
Services/
Music
Utilities
NOTE: If using Descent VNAV, verify that the altitudes for the selected
procedure match the charted or ATC cleared altitudes and are appropriate
for the airframe type.
System
Messages
Symbols
Appendix
Index
6-10
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
v5.13 and Earlier or v6.50 and Later
v6.00 Through v6.41
If you build your flight plan with the
destination airport at the end and then
load an approach procedure, you will
navigate all the way to the destination
airport before joining the procedure.
Be sure when LOADING and not
ACTIVATING an approach procedure
that the route to be flown is correct.
If you build your flight plan with the
destination airport at the end and
then load an approach procedure, the
destination airport will be removed from
the end of the flight plan. If the leg to
the destination airport is the active leg
when loading an approach procedure,
you will navigate all the way to the
destination airport before joining the
procedure. Be sure when LOADING and
not ACTIVATING an approach procedure
that the route to be flown is correct.
Foreword
Table 6-2 Loading and Activating an Approach
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
8. Touch the Load Approach & Activate key, which makes
the active leg Direct-To the selected transition waypoint, or
for Vector approaches to activate a leg that is an extended
final approach course. You can also “activate” the selected
procedure on the Procedures page, if the approach is not
activated on this page.
Wpt Info
Map
Traffic
Terrain
Weather
Approach Waypoints
Nearest
Services/
Music
Direct-To Waypoint
Utilities
System
Figure 6-17 After Activating the Approach
NOTE: When re-activating an approach, the decision as to whether a hold
is inserted at the IAF or not is assumed to be the same as the first time
the approach was activated, regardless of current aircraft position. If the
pilot wishes to have the hold inserted or removed from the procedure, the
procedure must be re-loaded or activated from the PROC-Approach page.
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
6-13
Messages
Symbols
Appendix
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
8.7
User Waypoints
NOTE: User airport feature is available in software v6.50 and later.
In addition to the airport, VOR, NDB and intersection information contained
in the navigation database, the GTN 7XX allows you to store up to 1,000
user-defined waypoints. The User Waypoint page displays the waypoint name
(up to six characters long), location, and elevation (user airports only).
To minimize nuisance terrain alerting when landing at airports not in the
navigation database, user waypoints may be configured as user airports. User
airports display on both the Waypoint Info and Nearest Airport pages.
Distance & Bearing To Wpt
From Current Position
Proc
Charts
Identifier, Symbol,
& References
Reference Wpt
Delete Wpt
Wpts Used
Wpt Info
View All Wpts
Map
Edit Wpt
Traffic
Terrain
Weather
Wpt Symbol
& Identifier
Area Map
Touch & Move
Finger While
Pressing To Pan Map
Map Scale
Touch To Zoom
Nearest
Figure 8-20 Waypoint Info for a User Waypoint
Select User Waypoint by Name
Services/
Music
Utilities
1. While viewing the User Waypoint page, touch the User
Waypoint Name.
System
2. Use the keypad to select the characters for the name and then
touch Enter.
Messages
Symbols
Appendix
Index
8-16
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
8.8
Create Waypoint
Foreword
User waypoints are created from the Create User Waypoint page. To create a
new user waypoint, simply enter its name (identifier) and position, or reference
another waypoint by radial and distance.
Waypoint Name
Touch to Set
User Airport
Map Area Around
Waypoint
Waypoint
Comment
Waypoint Type
Temporary
Waypoint
Touch To Set
Ref Wpt 1
Touch To Set
Ref Wpt 2
Figure 8-23 Waypoint Info - Create User Waypoint
Com/Nav
FPL
Proc
Charts
Wpt Info
Map
1. From the Waypoint Info page, touch the Create Waypoint
key.
2. Touch the User Identifier key.
3. Use the keypad to type the waypoint name (up to six characters)
and then touch Enter.
User Waypoint
Name
Audio &
Xpdr Ctrl
Direct-To
Touch to Set User
Airport Elevation
Touch to Finalize
Waypoint
Creation
Touch To Zoom
Touch to Cancel
Waypoint
Creation
Getting
Started
Backspace Key
Clears Wpt
Name
Cursor
Movement Keys
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Touch Enter
After Creating
Name
Figure 8-24 Waypoint Info - Create User Waypoint Name
Touch To Cancel
Creating Name
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
8-19
Symbols
Appendix
Index
Foreword
4. If desired, touch the Airport key to make the user waypoint
a user airport.
Getting
Started
5. Touch the Comment key to add a short comment for the new
waypoint.
Audio &
Xpdr Ctrl
6. Touch the Position Type key and then Lat/Lon,
Radial/Radial, or Radial/Distance to assign the type. See
the following instructions for more detail.
Com/Nav
FPL
Touch to Select the
Desired Waypoint
Position Type
Direct-To
Proc
Charts
Figure 8-25 Waypoint Info - Create User Position Type
Wpt Info
7. If desired, touch the Temporary? key to create the waypoint
for only temporary use. Temporary waypoints will be removed
when the power is cycled.
Map
Traffic
8. For user airports, touch the Elevation key and specify airport
elevation.
Terrain
9. When finished with all selections, touch the Create key to
create the new waypoint.
Weather
Nearest
8.8.1
NOTE: This feature is available in software v4.00 and later.
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
Mark On Target
If an external Mark On Target (MOT) switch is installed, pressing that switch
will result in the creation of a User waypoint called MOTxxx at the point in space
where the MOT switch was pushed. The waypoints are created in increasing
numeric order up to number 999, at which point they will start replacing
existing waypoints at the beginning of the list.
When a Mark on Target waypoint is created, it may not be immediately
visible on the moving map page because the ownship icon will be directly on
top of the waypoint. Creation of the waypoint can be verified by changing zoom
scales on the map or viewing the User Waypoints page.
8-20
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
8.8.2
Waypoint Location Based on LAT/LON
1. From the Create User Waypoint page, touch the Position
Type key and then the LAT/LON key. Then, touch the
Latitude/Longitude value key.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Touch to Select Lat/Lon
Waypoint Reference
Type
Com/Nav
FPL
Direct-To
Proc
Figure 8-26 Waypoint Info - Create User Waypoint Type - LAT/LON
2. The Lat/Lon coordinate values will be highlighted. Touch the
Lat or Lon key to toggle selection of the hemisphere values
and highlight the selected value.
Charts
Wpt Info
Map
Touch To Toggle
LAT/LON Selection
Traffic
Touch to
Select LAT/LON
Format
Touching the LAT
Key Activates
the Latitude
Hemisphere Value
for Selection
Touch to Select
Numeric Values
Touch to Select
Hemisphere
Value
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Figure 8-27 Waypoint Info - Set Lat/Lon Coordinate Selection
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
8-21
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
8.9
Import User Waypoints (Datacard)
NOTE: This feature is available in software v5.10 and later.
The GTN can import user generated waypoints from a file on the datacard.
The created waypoints will be at the latitude and longitude specified in the file
with the specified name and comment. This function overwrites any existing
user waypoints with the same name.
When a user waypoint file is on the datacard, a key will be available on the
Waypoint Info page for importing user waypoints.
1. Insert a datacard with the User waypoints into the GTN.
2. From the Waypoint Info page, touch the Import Waypoints
key.
3. Touch OK to acknowledge the pop-up to import all of the user
waypoints in the file.
Wpt Info
Map
Traffic
Terrain
Figure 8-30 Start User Waypoint Import
4. The pilot is informed of the status of the user waypoint import
via one of the following system messages.
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
8-24
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
When greater than 15 knots groundspeed the map is oriented either north
up with ownship oriented to its current track or track up. When less than 15 kts
groundspeed, the directional ownship icon is replaced with a non-directional
icon because it can't be determined if the rotorcraft is going sideways or
backwards. The map will continue to orient to the current track if the map
is selected for Track Up. If the map is oriented to track up, then below 5 kts
groundspeed the map orientation will "latch" to the last valid track prior to the
groundspeed going below 5 kts. The map will reorient when the groundspeed
again exceeds 5 kts. The position of the ownship icon over the map is always the
current GPS position of the aircraft.
Direct-To
NOTE: The electronic map is an aid to navigation and is designed to
facilitate the use of authorized government charts, not replace them.
Land and water data is provided only as a general reference. The accuracy
of the land and water data is not suitable for use as a primary source of
navigation and should only be used to supplement official government
charts and notices.
Proc
Charts
Wpt Info
Map
Traffic
Map Overlays
Terrain
Weather
Nearest
Services/
Music
Map Setup
Utilities
System
Map Detail
Messages
Map User Fields
Symbols
Appendix
Index
Topo
Airways
Terrain
NEXRAD (or PRECIP)*
Charts*
StormScope*
Traffic*
Radar*
Graphically Edit FPL
Map Pointer - Create Wpt
Map
Aviation
Land
Airspace
Traffic*
Weather*
Change User Fields
Restore Defaults
* Optional
Figure 9-2 Map Page Functional Diagram
9-2
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Orientation
North Up Above
Visual APPR Sel
Auto Zoom
Auto Zoom Min
Auto Zoom Max
Track Vector Length
Altitude Constraints
Nav Range Ring
Fuel Range Ring
Fuel Reserve Time
Topo Scale
Point Obstacle Rng
Wire Obstacle Rng
Chart Color
Restore Defaults
Airport Range
SafeTaxi Diagrams
Runway Extensions
Intersection Range
NDB Range
VOR Range
VRP Range
User Waypoint Range
Airway Range
TFRs
Restore Defaults
Road Detail
City Detail
State/Province
Names
River/Lake Detail
Restore Defaults
Smart Airspace
Show Airspaces
Class B/TMA Range
Class C/TCA Range
Class D Range
Restricted Range
MOA (Military) Range
Other/ADIZ Range
Restore Defaults
Range
Type
Restore Defaults
Weather Source
Cell Movement
METAR
Cloud Tops
Echo Tops
Lightning
Restore Defaults
9.1.2
Map Setup
190-01007-03 Rev. Q
Foreword
GTN 725/750 Pilot’s Guide
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Figure 9-13 Map Setup Functional Diagram
Appendix
9-13
Index
9.1.2.1
Map
The Map option defines the behavior and display of information on the Map
page such as: Orientation, North Up Above, Auto Zoom, Nav Range Ring, Topo
Scale, Obstacle Range, and Restore Defaults. The default values are shown in
bold type.
Feature
Orientation
North Up Above
Visual APPR Selector
Auto Zoom
Auto Zoom Min
Auto Zoom Max
Track Vector Length
Altitude Constraints
Nav Range Ring
Fuel Range Ring
Fuel Reserve Time
Topo Scale
Point Obstacle Range
Wire Obstacle Range
Chart Color Scheme
Restore Defaults
Selection
North Up, Track Up, Heading Up
Off, 10 NM, 15 NM, 25 NM, 40 NM, 50 NM, 75 NM,
100 NM, 150 NM, 250 NM
Off, 2.5 NM, 4 NM, 5 NM, 7.5 NM, 10 NM, 15 NM,
25 NM
Off, On
250 ft, 400 ft, 500 ft, 750 ft, 1000 ft, 1500 ft, 2500 ft,
0.5 NM, 0.75 NM, 1 NM, 1.5 NM, 2.5 NM, 4 NM, 5
NM, 7.5 NM, 10 NM, 15 NM, 25 NM, 40 NM, 50 NM,
75 NM, 100 NM, 150 NM, 250 NM, 400 NM
250 ft, 400 ft, 500 ft, 750 ft, 1000 ft, 1500 ft, 2500 ft,
0.5 NM, 0.75 NM, 1 NM, 1.5 NM, 2.5 NM, 4 NM, 5 NM,
7.5 NM, 10 NM, 15 NM, 25 NM, 40 NM, 50 NM,
75 NM, 100 NM, 150 NM, 250 NM, 400 NM
Off, 30 SEC, 60 SEC, 2 MIN, 5 MIN, 10 MIN, 20 MIN
Off, Selected Only, Selected & Active, All
Off, On, Enhanced
Off, On
30 Min, 45 Min, 60 Min, 90 Min
Off, On
Off, 4 NM, 5 NM, 7.5 NM, 10 NM, 15 NM
Off, 1 NM, 1.5 NM, 2.5 NM
Day, Night
Returns values to original factory settings
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Table 9-1 Map Setup Map Options
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
9-15
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Altitude Constraints
NOTE: This feature is available in software v6.50 and later.
Enabling this feature displays altitude constraints from the flight plan. The
active constraint is the altitude to which VNAV is currently providing guidance.
For more information about altitude constraints, refer to section 4.3.3.
Com/Nav
FPL
Active
Altitude
Constraint
Direct-To
To view a
constraint
value, select
the associated
waypoint
Proc
Charts
Wpt Info
Map
Figure 9-21 Altitude Constraints
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
9-20
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
9.6
Map Symbols
Various symbols are used to distinguish between waypoint types. The
identifiers for any on-screen waypoints can also be displayed. Special-use and
controlled airspace boundaries appear on the map, showing the individual
sectors in the case of Class B, Class C, or Class D airspace. The following symbols
are used to depict the various airports and navaids on the Map Page.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
Symbol
Description
Airport with hard surface
runway(s); Non-Serviced,
Primary runway shown
Airport with soft surface
runway(s) only, Non-Serviced
Restricted (Private) Airfield
Symbol
Description
Airport with hard surface
runway(s); Serviced, Primary
runway shown
Airport with soft surface
runway(s) only, Serviced
Unknown Airport
Heliport
NDB
Intersection
Locator Outer Marker
VOR
VOR/DME
VORTAC
DME
TACAN
TOD/BOD
User Waypoint
User Airport
ATK
VRP
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Table 9-18 Map Symbols
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
9-51
Index
10.5.1
Traffic Applications - SURF, AIRB, etc.
Foreword
The GTN ADS-B traffic display is capable of running in two “modes:”
Airborne Situational Awareness (AIRB) and Surface Situation Awareness (SURF).
AIRB is in operation in the en route environment, outside of five NM from
and 1,500 feet above the nearest airport.
SURF is in operation within the terminal environment (within five NM and
less than 1,500 feet above field elevation). When SURF is running, and the
zoom scale on the traffic display is less than two NM, the airport environment
(including taxiways and runways) is displayed in addition to traffic. This is to
aid in situational awareness of runway occupancy/availability, etc.
Due to the varying precision of the data received via ADS-B, ADS-R, and
TIS-B, all traffic targets may not be depicted on the traffic display. Because higher
data precision is required for display in the SURF environment, some targets
eligible for AIRB will not be displayed while SURF is active. Individual eligibility
for AIRB and SURF is depicted in the selected traffic data on the traffic page.
10.5.2
ADS-B Traffic Menu
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
The Traffic Menu allows control of the traffic information display.
Traffic
Select TCAS Status:
Operate and Standby
Touch To Perform
Traffic Test
Select Altitude Filter:
Normal, Above, Below,
Unrestricted
Toggle ADS-B
Traffic Display
Select Motion Vector:
Absolute, Relative, Off
Select Vector Duration:
30 sec, 1 min, 2 min,
5 min
Figure 10-11 ADS-B Traffic Menu
10.5.2.1
Terrain
Weather
Nearest
Services/
Music
Utilities
ADS-B Display
Touching ADS-B Display toggles the display of ADS-B traffic and
ADS-B traffic alerting.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
10-19
Index
11
TERRAIN
11.1
Foreword
Terrain Configurations
Getting
Started
NOTE: Obstacles are removed from the Terrain and TAWS pages at ranges
greater than 10 NM.
Audio &
Xpdr Ctrl
During power-up of the GTN 7XX, the terrain/obstacle database versions are
displayed along with a disclaimer. At the same time, the Terrain system self-test
begins. A failure message is issued if the terrain test fails.
Com/Nav
Garmin provides multiple terrain awareness solutions within the
GTN 7XX environment.
Direct-To
Alerting functions are designed to increase situational awareness
and help reduce controlled flight into terrain (CFIT).
Terrain Type
(H)Terrain
Proximity
(H)Terrain
Alerting
HTAWS
TAWS-A
TAWS-B
Features
• Standard terrain function displaying relative elevations on
moving map
FPL
Proc
Charts
Wpt Info
Map
• Does not provide aural or visual alerts
• Basic terrain alerting function
Traffic
• Provides aural and visual alerts
Terrain
• Does not meet TSO-C151c or TSO-C194 requirements for
certification
• Optional terrain alerting function for rotorcraft
Weather
Nearest
• Satisfies TSO-C194 requirements for certification
• Optional TSO-C151c Class A terrain alerting system
Services/
Music
• Provides aural and visual alerts when terrain and obstacles are
within a given altitude threshold from the aircraft
• Optional TSO-C151c Class B terrain alerting system
Utilities
System
• Provides aural and visual alerts
Messages
Table 11-1 Terrain Configurations
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
11-1
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
11.2
GPS Altitude for Terrain
GPS altitude is derived from satellite measurements. To require an accurate
3-D fix (latitude, longitude, altitude), a minimum of four operating satellites
must be in view of the GPS receiver antenna.
The terrain system uses GPS altitude and position data to:
• Create a 2-D image of surrounding terrain and obstacles relative to the
aircraft's position and altitude
• Calculate the aircraft's flight path in relation to surrounding terrain and
obstacles
• Predict hazardous terrain conditions and issue alerts
Proc
Charts
Wpt Info
Map
Traffic
Terrain
11.2.1
The GTN converts GPS altitude data to GSL altitude (i.e., the geometric
altitude relative to MSL) for use in terrain functions. All Terrain page depictions
and elevation indications are in GSL.
Variations between GSL altitude and the aircraft's corrected barometric
altitude (or indicated altitude) are common. As a result, Terrain page altitude
data may differ from current altimeter readings. Both GSL altitude and indicated
altitude represent height above MSL, but differ in accuracy and reliability.
Altitude Type
Weather
Nearest
GSL Altitude & Indicated Altitude
GSL
Features
• Highly accurate and reliable geometric altitude source
• Does not require local altimeter settings to determine height
above MSL
• Not subject to pressure and temperature variations
Services/
Music
Utilities
• Affected primarily by satellite geometry
• Barometric altitude source corrected for pressure variations
System
• Requires frequent altimeter setting adjustment to determine
height above MSL
Indicated
Messages
• Subject to local atmospheric conditions
• Affected by variations in pressure, temperature, and lapse rate
Symbols
Table 11-2 GSL and Indicated Altitude Features
Appendix
Index
11-2
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
11.5
Terrain Alerting
Audio &
Xpdr Ctrl
Terrain alerting functions increase situational awareness and help reduce
controlled flight into terrain (CFIT). Visual and aural annunciations alert the
pilot when terrain and obstacles are within the given altitude threshold from
the aircraft.
Com/Nav
11.5.1
Getting
Started
FPL
Terrain Alerting Requirements
• A valid terrain/obstacle database
• A valid 3-D GPS position solution
Direct-To
11.5.2
Proc
NOTE: The data contained in the databases comes from government
agencies. Garmin accurately processes and cross-validates the data but
cannot guarantee its accuracy or completeness.
Charts
Wpt Info
Map
Traffic
Terrain Alerting Limitations
Terrain alerting uses terrain and obstacle information supplied by government
sources. Terrain information is based on terrain elevation information in a
database that may contain inaccuracies. Individual obstructions may be shown if
available in the database. The data undergoes verification by Garmin to confirm
accuracy of the content.
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
11-10
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
11.5.3
Using Terrain Alerting
Foreword
During unit power-up, the terrain/obstacle database versions are displayed.
At the same time, the terrain system self-test begins, and one of the following
aural messages is generated:
• “Terrain System Test OK”
• “Terrain System Failure”
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
On the Map page, terrain and obstacles with heights greater than
200 feet Above Ground Level (AGL) display in yellow and red. The
GTN 7XX adjusts colors automatically as the aircraft altitude changes.
FPL
Direct-To
Proc
Charts
Wpt Info
View
360
Arc
Map
Layers
Flight Plan
Legend
Traffic
Terrain
Alerting
Terrain Alerting Inhibit
Test Terrain Alerting
Terrain
Weather
Figure 11-5 Terrain Alerting Page Functional Diagram
11.5.4
Displaying Terrain Alerting Data
Nearest
Terrain uses yellow (caution) and red (warning) to depict terrain and obstacles
alerts relative to aircraft altitude. Colors are adjusted automatically as the aircraft
altitude changes. The colors and symbols shown below are used to represent
terrain, obstacles, and threat locations. Obstacles are removed when more than
2000 ft below the aircraft.
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
11-11
Index
Foreword
Threat Location
Projected Flight Path
100 ft Threshold
Getting
Started
Unlighted Obstacle
Terrain above or
within 100 ft
below the aircraft
altitude (Red)
1000 ft
Audio &
Xpdr Ctrl
Terrain between 100 ft and 1000 ft below the
aircraft altitude (Yellow)
Com/Nav
Terrain more than 1000 ft below the aircraft altitude (Black)
Figure 11-6 Terrain Altitude/Color Correlation
FPL
Unlighted Obstacle
Threat
Location Terrain
< 1000 ft > 1000 ft < 1000 ft > 1000 ft Indicator Color
AGL
AGL
AGL
AGL
Direct-To
Proc
Lighted Obstacle
Charts
Red
Wpt Info
Traffic
Terrain
Weather
Obstacle Symbol
Map
Yellow
White
Terrain/
Obstacle
between
1000 ft and
2000 ft
below current
aircraft
altitude
Utilities
System
Alert
Level
Terrain/
Obstacle at or
within 100 ft WARNING
below current
(Red)
aircraft
altitude
Terrain/
Obstacle
between
100 ft and
1000 ft
below current
aircraft
altitude
Nearest
Services/
Music
Terrain/
Obstacle
Location
CAUTION
(Yellow)
Table 11-5 Terrain/Obstacle Colors and Symbology
Tower
Messages
Windmill
Windmill in Group
Power Line
Symbols
Appendix
Index
Table 11-6 Obstacle Icon Types
11-12
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Grouped obstacles are shown with an asterisk (as shown in the Windmill in
Group example above). The color of the asterisks is tied to the relative altitude
of the highest obstacle in the group, not other obstacles within that group.
Obstacles are grouped when they would otherwise overlap.
11.5.5
Aircraft orientation on this map is always heading up unless there is no valid
heading. If orientation is not heading up, it will be track up. Two views are
available relative to the position of the aircraft: the 360° default display and the
radar-like ARC (120°) display. Map range is adjustable with the In and Out keys
from 1 to 200 NM, as indicated by the map range rings (or arcs).
Terrain Page Layers
1. While viewing the Terrain page, touch the Menu key.
Select Terrain View
Getting
Started
Audio &
Xpdr Ctrl
Terrain Page
Terrain information is displayed on the Map and Terrain pages. The Terrain
page is specialized to show terrain, obstacle, and threat location data in relation
to the aircraft’s current altitude, without clutter from the basemap. Flight plan
information (airports, VORs, and other NAVAIDs) included in the flight plan are
displayed for reference. If an obstacle and the projected flight path of the aircraft
intersect, the display automatically zooms in to the closest threat location on the
Terrain page.
11.5.5.1
Foreword
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Select Displayed Layer
Terrain
Weather
Nearest
Services/
Music
Utilities
Select Terrain Function
Figure 11-7 Terrain Menu
System
2. Touch the Flight Plan key to toggle the display of the active
flight plan.
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
11-13
Index
Foreword
Flight Plan
Getting
Started
Terrain Overlay
Audio &
Xpdr Ctrl
Com/Nav
FPL
Terrain Legend
Obstacle Legend
(software v6.00
or later)
Alert
Annunciation
Direct-To
Icon shows point
obstacle overlay is active
(software v5.12 or later)
Proc
Charts
Figure 11-8 Flight Plan and Legend Shown On Terrain Page
3. Touch the Legend key to toggle the display of the Terrain and
Obstacle legend.
Wpt Info
Map
Traffic
Terrain
Icon shows wire
obstacle overlay is active
(software v5.12 or later)
11.5.5.2 Terrain Page View
Select the 120º Arc or 360º rings overlay for the Terrain page with either the
360 or Arc keys from the Menu.
1. While viewing the Terrain page, touch the Menu key.
2. Touch the 360º or Arc key.
Weather
Nearest
Services/
Music
Utilities
11.5.5.3 Terrain Alerting Selections
An inhibit function allows you to manually inhibit aural terrain alerts. After
cycling power, terrain alerting functions will no longer be inhibited.
1. While viewing the Terrain page, touch the Menu key.
System
Messages
2. Touch the Terrain Inhibit key to toggle the inhibiting of terrain
alerts.
Symbols
3. Touch the Test Terrain key to perform an internal test of the
terrain alerting system. This function is not available when the
aircraft is in the air.
Appendix
Index
11-14
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
11.5.6
Terrain Alerts
Alerts are issued when flight conditions meet parameters that are set within
terrain alerting software algorithms. When an alert is issued, visual annunciations
are displayed and aural alerts are simultaneously issued. Alert types are shown
in the Terrain Alerts Summary with corresponding annunciations and aural
messages.
When an alert is issued, annunciations appear on the Terrain page. If the
page is not displayed at the time, a pop-up alert appears over the page being
viewed.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Alert Location
Proc
Charts
Blinking Message
Touch To Remove
Pop-Up And Remain
On Current Page
Touch To Display
Terrain Page
Alert Annunciation
Wpt Info
Map
Traffic
Figure 11-9 Terrain Alert Pop-Up
To acknowledge the pop-up alert:
Terrain
Touch the Go to Terrain key (accesses the Terrain page)
Weather
OR
Nearest
Touch the Close key to remove the pop-up alert
Services/
Music
Utilities
If the pilot takes no action, the pop-up will be removed when the alert is no
longer active.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
11-15
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
11.5.6.1 Terrain Alerting Colors and Symbology
Color and symbols are also associated with terrain alerts. The alert
annunciations show in the bottom left corner of the display. The three alert
levels and their associated text coloring as well as any associated symbology are
shown in the following table.
Alert Level
Annunciator Text
Warning
White text on red
background
Caution
Black text on yellow
background
Informational
Charts
Map
FLTA Terrain Warning
(RTC-W, ITI-W)
Traffic
Terrain
FLTA Obstacle Warning
(ROC-W, IOI-W)
Weather
Nearest
Services/
Music
Utilities
System
FLTA Wire Warning
(ILI-W, RLC-W)
FLTA Terrain Caution
(RTC-C, ITI-C)
FLTA Obstacle Caution
(ROC-C, IOI-C)
Messages
Symbols
Appendix
Index
FLTA Wire Caution
(ILI-C, RLC-C)
Premature Descent
Alert Caution (PDA)
11-16
Example Visual Annunciation
Black text on white
Not Applicable
background
Table 11-7 Terrain Alert Colors and Symbology
Alert Type
Wpt Info
Threat Location
Indicator
Alert
Annunciation
Aural Message
“Terrain Ahead, Pull Up; Terrain Ahead,
Pull Up”*
or
“Terrain, Terrain; Pull Up, Pull Up”
“Obstacle Ahead, Pull Up; Obstacle Ahead,
Pull Up”*
or
“Obstacle, Obstacle; Pull Up, Pull Up”
"Wire Ahead Pull Up, Wire Ahead Pull
Up"
“Terrain Ahead; Terrain Ahead”*
or
“Caution, Terrain; Caution, Terrain”
“Obstacle Ahead; Obstacle Ahead”*
or
“Caution, Obstacle; Caution, Obstacle”
"Wire Ahead"
“Too Low, Terrain”
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Alert Type
Voice Call Out
(VCO-500)
Alert
Annunciation
Aural Message
Foreword
None
“Five-Hundred”
Getting
Started
* Alerts with multiple messages are configurable at installation and are
installation-dependent. Alerts for the default configuration are indicated with asterisks.
Table 11-8 Alerts Summary
11.5.6.2
Forward Looking Terrain Avoidance
Imminent Terrain Impact (ITI), Imminent Line Impact (ILI), and
Imminent Obstacle Impact (IOI) alerts are issued when the aircraft is below
the elevation of a terrain or obstacle cell in the aircraft’s projected path. ITI, ILI,
and IOI alerts are accompanied by a threat location indicator displayed on the
Terrain page. The alert is annunciated when the projected vertical flight path is
calculated to come within minimum clearance altitudes in the following table.
En Route
Terminal
Approach
Departure
Com/Nav
FPL
Reduced Required Terrain Clearance (RTC), Reduced Required Line
Clearance (RLC), and Reduced Required Obstacle Clearance (ROC) alerts
are issued when the aircraft flight path is above terrain, yet is projected to come
within the minimum clearance values in the FLTA Alert Minimum Terrain and
Obstacle Clearance Values table. When an RTC, RLC, and/or a ROC alert is
issued, a threat location indicator is displayed on the Terrain page.
Flight Phase
Audio &
Xpdr Ctrl
Minimum Clearance Altitude (feet)
Level Flight
Descending
700
500
350
300
150
100
100
100
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
Table 11-9 FLTA Alert Minimum Terrain and Obstacle Clearance Values
During final approach, FLTA alerts are automatically inhibited when the
aircraft is below 200 feet AGL while within 0.5 NM of the approach runway or
below 125 feet AGL while within 1.0 NM of the runway threshold.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
11-17
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
11.5.6.3
Premature Descent Alerting
A Premature Descent Alert (PDA) is issued when the system detects that the
aircraft is significantly below the normal approach path to a runway.
PDA alerting begins when the aircraft is within 15 NM of the destination
airport and ends when the aircraft is either 0.5 NM from the runway threshold
or is at an altitude of 125 feet AGL while within 1.0 NM of the threshold. During
the final descent, algorithms set a threshold for alerting based on speed, distance,
and other parameters.
Height Above Terrain (Feet)
700
Direct-To
Proc
Charts
Wpt Info
400
300
PDA Alerting Area
200
100
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Distance From Destination Airport (nm)
Figure 11-10 PDA Alerting Threshold
Traffic
Weather
500
Runway 1
Threshold
Map
Terrain
600
PDA and FLTA aural and visual alerts can be manually inhibited. Discretion
should be used when inhibiting terrain alerts and the system should be enabled
when appropriate. When terrain alerting is inhibited, the alert annunciation
“TER INHB” is shown.
Nearest
11.5.6.4
Services/
Music
Inhibit mode deactivates the PDA/FLTA aural and visual alerts. Pilots should
use discretion when inhibiting terrain alerts and always remember to enable
the system when appropriate. Only the PDA and FLTA alerts are disabled in the
inhibit mode. After cycling power, the terrain alerting function will no longer
be inhibited.
Utilities
System
Inhibiting/Enabling PDA/FLTA Alerting
Messages
Symbols
Appendix
Index
11-18
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Touch To Toggle
Terrain Inhibit.
Terrain
Inhibited
Annunciation
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
Figure 11-11 Terrain Alerting Inhibited Annunciation
FPL
1. While viewing the Terrain page, touch the Menu key.
Direct-To
2. Touch the Terrain Inhibit key to inhibit or enable terrain
alerting (choice dependent on current state). A green bar in
the key indicates the inhibit function is active.
11.5.6.5 Altitude Voice Call Out (VCO)
Terrain provides aural advisory alerts as the aircraft descends, beginning at
500 feet above the terrain, as determined by the radar altimeter (if greater than
5 NM from the nearest airport) or 500 feet above the nearest runway threshold
elevation (if less than 5 NM from the nearest airport). Upon descent to this
altitude, the terrain system issues the aural alert message “Five-hundred.”
11.5.6.6 Terrain Not Available Alert
Terrain requires a 3-D GPS position solution along with specific vertical
accuracy minimums. Should the position solution become degraded or if
the aircraft is out of the database coverage area, the annunciation “TER N/A”
is generated in the annunciation window and on the Terrain page. The aural
message “Terrain Not Available” is generated. When the GPS signal is reestablished and the aircraft is within the database coverage area, the aural
message “Terrain Available” is generated (when the aircraft is airborne).
11.5.6.7 Terrain Failure Alert
Terrain continually monitors several system-critical items such as database
validity, hardware status, and GPS status. If the terrain/obstacle database is not
available, the aural message “Terrain System Failure” is generated along with a
“TER FAIL” annunciation.
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
11-19
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
11.5.7
Terrain System Status
During power-up, the terrain system conducts a self-test of its aural and
visual annunciations. This test can also be manually initiated. An aural alert is
issued at test completion. Terrain system testing is disabled when ground speed
exceeds 30 knots.
Alert
Alert Type
Aural Message
Annunciation
Terrain Available
None
“Terrain Available”
None
Terrain System Test in Progress
Direct-To
Proc
Charts
Wpt Info
Terrain System Test Pass
None
“Terrain System Test OK”
Terrain Not Available
Terrain N/A
None
Terrain Alerting is Disabled
“Terrain System Failure”
Terrain System Test Fail
Table 11-10 Terrain System Test Status Annunciations
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
11-20
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
12.3
Weather Radar
Foreword
The GTN 7XX can display weather radar from a Garmin GWX system or from
selected 3rd party radars. Only one weather radar system may be interfaced to
the system. For detailed information on the operation of 3rd party radars, refer
to their specific documentation.
Audio &
Xpdr Ctrl
12.3.1
Com/Nav
Garmin GWX Radar Description
The Garmin GWX Airborne Color Weather Radars combine excellent range
and adjustable scanning profiles with a high-definition target display.
To focus radar scanning on specific areas, Sector Scanning offers
pilot-adjustable horizontal scan angles of 20º, 40º, 60º, or 90º (up to 120º
with GWX 70/75/80). A vertical scanning function helps to analyze storm tops,
gradients, and cell buildup activity at various altitudes.
See the documentation of each radar for specific features.
12.3.1.1
Getting
Started
FPL
Direct-To
Proc
Charts
Wpt Info
Principles of Pulsed Airborne Weather Radar
The term RADAR is an acronym for RAdio Detecting and Ranging. Pulsed
radar locates targets by transmitting a microwave pulse beam that, upon
encountering a target, is then reflected back to the radar receiver as a return
“echo.” The microwave pulses are focused and radiated by the antenna, with
the most intense energy in the center of the beam and decreasing intensity near
the edge. The same antenna is used for both transmitting and receiving. The
returned signal is then processed and displayed on the GTN 7XX.
Radar detection is a two-way process that requires 12.36 micro-seconds for
the transmitted microwave pulses to travel out and back for each nautical mile
of target range. It takes 123.6 micro-seconds for a transmitted pulse to make the
round trip if a target is 10 NM away.
The GWX weather radar should be used to avoid severe weather, not for
penetrating severe weather. The decision to fly into an area of radar targets
depends on target intensity, spacing between the targets, aircraft capabilities and
pilot experience. Pulse type weather radar detects only precipitation, not clouds
or turbulence. The display may indicate clear areas between intense returns, but
this does not necessarily mean it is safe to fly between them. Only Doppler radar
can detect turbulence.
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-33
Index
12.3.5
Weather Mapping and Interpretation
12.3.5.1
Weather display Interpretation
Foreword
When evaluating various target returns on the weather radar display, the
colors denote approximate rainfall intensity and rates as shown in the table
below.
GWX 68 Radars
Weather
Mode
Color
Approximate
Intensity
GWX 70 Radars
Approximate
Rainfall Rate
(in/hr)
Approximate
Intensity
3rd Party
Radars
Radar Return
Level (see
radar documentation
for details)
BLACK
< 23 dBZ
< .01
< 23 dBZ
0
GREEN
23 dBZ to < 33 dBZ
.01 - 0.1
23 dBZ to < 33 dBZ
1
YELLOW
33 dBZ to < 41 dBZ
0.1 - 0.5
33 dBZ to < 41 dBZ
2
RED
41 dBZ to < 50 dBZ
0.5 - 2
41 dBZ to < 49 dBZ
3
MAGENTA
50 dBZ and greater
>2
> 49 dBZ
4
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
12.3.5.2 Thunderstorms
Updrafts and downdrafts in thunderstorms carry water through the cloud.
The more severe the drafts, the greater the number and size of the precipitation
droplets. With this in mind, the following interpretations can be made from what
is displayed on the weather radar. Avoid these areas by an extra wide margin.
• In areas where the displayed target intensity is red or magenta (indicating
large amounts of precipitation), the turbulence is considered severe.
• Areas that show steep color gradients (intense color changes) over thin bands
or short distances suggest irregular rainfall rate and strong turbulence.
• Areas that show red or magenta are associated with hail or turbulence, as
well as heavy precipitation. Vertical scanning and antenna tilt management
may be necessary to identify areas of maximum intensity.
Along squall lines (multiple cells or clusters of cells in a line), individual cells
may be in different stages of development. Areas between closely spaced, intense
targets may contain developing clouds not having enough moisture to produce a
GTN 725/750 Pilot’s Guide
Audio &
Xpdr Ctrl
Charts
Table 12-29 Precipitation Intensity Levels
190-01007-03 Rev. Q
Getting
Started
12-41
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
12.4
GWX Radar Operation in Weather Mode
Foreword
WARNING: Begin transmitting only when it is safe to do so. When
transmitting while the aircraft is on the ground, no personnel or objects
should be within 11 feet of the antenna.
CAUTION: In Standby mode, the antenna is parked at the center line. It
is always a good idea to put the radar in Standby mode before taxiing the
aircraft to prevent the antenna from bouncing on the bottom stop and
possibly causing damage to the radar assembly.
When the weather radar system is in the Weather or Ground Map mode, the
system automatically switches to Standby mode on landing.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Tilt
Show Bearing
Map
Bearing
Turbulence Detection*
GCS*
ACT*
Watch Shading
Weather Alert
Stabilize
Traffic
Mode
Off
Standby
Weather
Ground
Test
Scan
Horizontal
Vertical
Weather
Sector Scan
20
40
60
Terrain
90*
Nearest
Full
Services/
Music
Gain
*GWX 70/75/80 only.
Utilities
Figure 12-59 Weather Radar Functional Diagram
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-45
Index
Foreword
12.4.1
Viewing Weather on the Weather Radar Page
1. From the Home page, touch Weather and then Radar
(if necessary).
Getting
Started
Audio &
Xpdr Ctrl
Antenna
Stabilization,
Ground
Suppression, and
WATCH Shading
Status Fields
Bearing
Line
Com/Nav
FPL
Direct-To
Proc
Charts
Range Scale
Scan Line
Bearing Line Display
Tilt
Adjustment
Altitude
Compensated Tilt
Status Field
Precipitation
Scale
Wpt Info
Operating
Mode
Map
Scan Direction
(Horizontal)
Traffic
Gain
Calibration
Setting
Bearing Line
Adjustment
Figure 12-60 Weather Radar Page (Horizontal Scan)
Terrain
2. Touch the MODE key and then touch the function desired.
Weather
3. The color-coded precipitation scale is shown on the left side
of the display. A table describing the precipitation intensity
levels is in section 12.3.5.1.
Nearest
Services/
Music
Utilities
Precipitation
Color Values
System
Messages
GWX 68
Symbols
GWX 75/80
Figure 12-61 Weather Radar Precipitation Scale
4. Touch the IN and OUT keys to select the desired range. Touch
the desired keys to set any required values as described below.
Appendix
Index
GWX 70
12-46
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
12.4.2
Weather Radar Modes
Foreword
Selecting Ground, Weather, or Test mode initiates a warm-up period
(a countdown timer displays on the screen). The selected mode is available once
warm-up is complete.
1. While on the ground, touch MODE.
2. In the Weather Radar Mode window, touch STANDBY.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Touch the Desired Mode
Direct-To
Proc
Charts
Wpt Info
Map
Figure 12-62 Weather Radar Mode Selection
3. Touch MODE and select Weather, Ground, or Test. A caution
window is displayed.
Traffic
Terrain
Weather
Nearest
Services/
Music
Figure 12-63 Caution for Radar Activation Confirmation
4. Touch OK to acknowledge the selected mode will be activated.
If Weather or Ground is selected, a warm-up period is initiated
(countdown is displayed on the screen). After the warm-up is
complete, the radar begins transmitting.
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-47
Index
Foreword
12.4.7
Weather Radar Menu
Touching Menu opens the Weather Radar menu. With the
exception of Sector Scan, all selections are on/off only.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
GWX 70
Figure 12-68 Weather Radar Menu Selections
Proc
NOTE: In software prior to v6.50, Ground Clutter Suppression (GCS) and
Turbulence Detection are only supported for 12” or larger RADAR antennas.
Turbulence Detection is only supported out to a range of 40 NM and is
disabled at display ranges greater than 160 NM.
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
GWX 68
12.4.7.1 Weather Attenuated Color Highlight (WATCH™)
While in horizontal scan mode, this feature can be used as a tool to determine
areas of possible inaccuracies in displayed intensity due to weakening of the
radar energy. This weakening is known as “attenuation.” The radar energy
weakens as it passes through areas of intense precipitation, large areas of lesser
precipitation, and distance. Issues with the radome will also attenuate the radar
energy. All these factors have an effect on the return intensity. The more energy
that dissipates, the lesser the displayed intensity of the return. Accuracy of the
displayed intensity of returns located in the shaded areas are suspect. Make
maneuvering decisions with this information in mind. Proper antenna tilt
management should still be employed to determine the extent of attenuation in
a shaded area.
1. While viewing the Weather Radar menu, touch
WATCH Shading to toggle WATCH Shading.
To deactivate WATCH mode, touch the key again.
Symbols
Appendix
Index
12-52
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
WATCH "On"
Annunciation
WATCH
Shaded
Area
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Figure 12-69 Horizontal Scan with WATCH
12.4.7.2 Weather Messages
The weather alert feature may be used to indicate the presence of heavy
precipitation beyond the currently displayed range and 80 to 320 NM from the
aircraft’s present position. Weather alert targets appear as colored bands along
the outer range ring at the approximate azimuth of the detected returns.
If a weather alert is detected within ±10° of the aircraft heading, a message
will be displayed in the Messages page. Touch the MSG key to view messages.
Weather Alerts
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Figure 12-70 Weather Alert Display
Messages
If the antenna tilt is adjusted too low, a weather message can be generated by
ground returns. To avoid this issue, set the display range to less than 80 NM in
the terminal area.
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-53
Symbols
Appendix
Index
Foreword
1. While viewing the Weather Radar menu, touch Weather Alert
to toggle weather alerts.
Getting
Started
2. To deactivate weather alerts, repeat sequence.
Audio &
Xpdr Ctrl
12.4.7.3
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Antenna Stabilization
1. While viewing the Weather Radar menu, touch Stabilize to
toggle Antenna Stabilization.
2. To deactivate Antenna Stabilization, repeat sequence. The
current stabilization condition is shown in the top right of the
weather radar display.
12.4.7.4 Altitude Compensated Tilt (GWX 70/75/80 Only)
Altitude Compensated Tilt (ACT) automatically adjusts the tilt to compensate
for altitude changes as you climb or descend.
1. While viewing the Weather Radar menu, touch ACT to toggle
ACT.
2. To deactivate ACT, repeat sequence.
12.4.7.5 Turbulence Detection (GWX 70/75/80 Only)
Turbulence Detection activates a feature that detects and displays severe
turbulence. Turbulence Detection is inactive at ranges greater that 160 NM. If
Turbulence Detection is enabled and available, Turbulence Detection will be
reported as Inactive in any of the following conditions:
• Scan orientation is not Horizontal
• Scan range is greater than 160 NM
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
• Radar mode is not Weather
1. While viewing the Weather Radar menu, touch
Turbulence Detection to toggle Turbulence Detection.
2. To deactivate Turbulence Detection, repeat sequence.
12.4.7.6 Ground Clutter Suppression (GWX 70 Only)
Ground Clutter Suppression (GCS) reduces the amount of returns as a result
of highly reflective objects on the ground, such as buildings or cities, while
maintaining the intensity and size of weather returns.
1. While viewing the Weather Radar menu, touch GCS to toggle
Ground Clutter Suppression.
2. To deactivate Ground Clutter Suppression, repeat sequence.
12-54
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
12.4.7.7
Sector Scan
Adjusting the Sector Scan reduces the scan angle from Full in increments of
±20°, ±40°, and ±60° in horizontal or vertical scanning.
1. While viewing the Weather Radar menu, touch Sector Scan
to display the Sector Scan Mode window.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Touch the
Desired Sector
Size
GWX 68
Proc
Charts
GWX 70/75/80
Wpt Info
Figure 12-71 Sector Scan Mode
2. Touch the desired mode. After selection, you are returned to
the Weather Radar menu.
Map
Traffic
3. Touch Back to exit the menu.
Terrain
Weather
Bearing Line
Nearest
Scan Line
Services/
Music
Scan Range
Utilities
System
Sector Scan
Selection in
Menu
Messages
Symbols
Figure 12-72 Selected Sector Scan Range
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-55
Index
Connext Weather coverage is available throughout most of
Europe, Canada and the U.S. Additional radar coverage areas are
added continuously. For the latest radar coverage information, visit:
https://fly.garmin.com/fly-garmin/connext/worldwide-weather/
Various world-wide weather subscription package options provide weather
reporting for most of Europe, Canada, Australia, and the U.S.
12.5.1
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
Using Connext Satellite Weather Products
NOTE: A system can be configured for multiple weather products, but only
one may be selected for viewing in the Weather or map pages at a given
time.
When a weather product is active on the Weather Data Link Page or the
Navigation Map Page, the age of the data is displayed on the screen. The age of
the product is based on the time difference between when the data was assembled
on the ground and the current GPS time. Weather products are refreshed at
selectable intervals.
Weather products expire at intervals based on each product. When the data
expires, it is removed from the display. This ensures that the displayed data is
consistent with what is currently being broadcast by Connext Satellite Radio
services. If more than half of the expiration time has elapsed from the time the
data is received, the color of the product age displayed changes to yellow.
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-57
Index
Foreword
Touch To Select
Map Orientation
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Figure 12-78 Connext Weather Map Orientation
12.5.4
Direct-To
Register with Connext
To access Connext Weather, visit flyGarmin.com and create a Connext
Satellite Services account. Be ready to provide the GTN system ID, airframe
information (model, tail number), and Iridium serial number. Garmin will issue
an access code for entry on the Connext Registration page. If access code and
system ID are correct, the airframe registration details will display.
1. While viewing Connext Settings Menu, touch the
Datalink Status key.
Iridium
Signal Level
Current
Registration Info
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Phone and
Datalink Status
Nearest
Services/
Music
Touch To
Register
Utilities
System
Figure 12-79 GSR 56 Status
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
12-61
Index
15
UTILITIES
Foreword
The Utilities page provides a group of features that make flight planning
easier and more efficient.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Figure 15-1 Utilities Page
Feature
VNAV 1
VCALC 1
Trip Planning
Fuel Planning 2
DALT/TAS/Winds
RAIM Prediction
Flight Timers
Wpt Info
Description
• Enable en route vertical guidance
Map
• Specify a target vertical speed and flight path angle
Traffic
• View active constraint data
Calculate time to TOD and vertical speed required to
reach target altitude at the specified location.
View DTK, DIS, ETE, ESA and ETA information for
a direct-to, point-to-point between two specified
waypoints or for any programmed flight plan.
View fuel conditions along the active direct-to or flight
plan.
Calculate altitude, airspeed, and winds.
Determine GPS coverage availability for the current
location or a specified waypoint at any time and date.
RAIM performs checks to ensure the GTN unit has
adequate satellite geometry during flight.
Monitor time in flight using three available timer types.
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
15-1
Index
Feature
Foreword
Getting
Started
Scheduled Messages
Audio &
Xpdr Ctrl
Checklists
Logs
Com/Nav
Clean Screen
Description
Create custom reminder messages and set when they
will display.
Review a built-in version of the aircraft checklist.
Export a flight data log.
Lock touchscreen controls to prevent accidental
activation while cleaning the display.
Table 15-4 Utilities Page Features
FPL
Note 1: VCALC and VNAV functions are mutually exclusive.
Enabling one automatically disables the other.
Direct-To
Note 2: Aircraft must be equipped with fuel flow and/or
fuel on board sensors.
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
15-2
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
FPL
Leg
Point to Point
P.POS
From
To
Flight Plan
WAAS
Diagnostic Log
Flight Data Log
Depart Time
Depart Date
Ground Speed
Mode
*VCALC and VNAV functions are mutually exclusive..
VS Target
Flight Path
Angle
VNAV Enabled
*
Display Messages
Restore Defaults
Target Waypoint
VS Profile
Offset
Before/After
MSL
Above Wpt
Altitude Type
Target Altitude
*
FPL
Leg
Point to Point
P.POS
From
To
Flight Plan
Fuel on Board
Fuel Flow
Ground Speed
Mode
Compute
RAIM
Waypoint
Arrival Date
Arrival Time
RAIM Status
Indicated ALT
BARO
CAS
TAT
TRK
HDG
Ground Speed
Reset Time
Reset Timer
Departure Time
Criteria
Power On
In Air
Power On
In Air
Criteria
Trip Timer
Reset Timer
Start/Stop
Direction
Up
Down
Generic Timer
Menu
Group
Checklist
Clear Current
Checklist
Clear All
Checklists
Message
Type
Timer
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Figure 15-2 Utilities Functional Diagram
15-3
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
Foreword
15.1
NOTE: If VNAV is enabled, this page is replaced with the
VNAV Profile page. For more information, refer to section 4.3.3.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Vertical Calculator (VCALC)
The Vertical Calculator (VCALC) function allows you to create a
three-dimensional profile which guides you from your present position and
altitude to a final (target) altitude at a specified location. This is helpful when
you would like to descend to a certain altitude near an airport. Once the profile
is defined, message alerts and additional data can be configured on the Map Page
to keep you informed of your progress.
Direct-To
Cruise Altitude
Proc
Target Offset (Before)
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Target
Waypoint
Target Altitude
Charts
Figure 15-3 VCALC Target
VCALC is inhibited in the following conditions:
• Groundspeed is less than 35 knots
• No active flight plan or direct-to destination
• SUSP mode
• Vectors-to-Final mode
• VLOC mode
• After the FAF on an approach
• OBS mode
WARNING: Do not use VCALC messages as the only means of either avoiding
terrain/obstacles or following ATC guidance. VCALC provides advisory
information only and must be used in concert with all other available navigation
data sources.
Utilities
System
Messages
Symbols
Appendix
Index
15-4
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Serial No. & Sys ID
SW/HW Version Info
Database Info
Foreword
Getting
Started
SBAS
WAAS
Audio &
Xpdr Ctrl
Com/Nav
CDI
Date/Time
Com/Nav
Nearest Airport
Keyboard
Crossfill
FPL
Direct-To
Arrival
Destination Proximity
Class B/TMA
Class C/TCA
Class D
Restricted
MOA (Military)
Other
Airspace Altitude Buffer
Proc
Charts
Wpt Info
Map
User Fields
Traffic
Nav Angle
Mag Var
Temp
Fuel
Position Format
Terrain
Weather
Nearest
Volume
TAWS Alert Voice
Services/
Music
Manual Offset
Utilities
Connext Setup *
System
Voice Commands *
Command History *
Messages
Symbols
* Optional
Appendix
Index
Figure 16-2 System Function Summary
16-2
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
16.4
Setup
Foreword
The System Setup page allows you to:
Getting
Started
• Select CDI scale and ILS CDI capture type
• Specify time format and local offset
Audio &
Xpdr Ctrl
• Access nearest airport search filtering options
Com/Nav
• Access COM/NAV radio settings
• Select keyboard format
FPL
• Enable crossfilling to a second GTN or GNS unit
Direct-To
Proc
Charts
Wpt Info
CDI
CDI Scale
ILS CDI Capture
Map
Date/Time
Traffic
Local Offset
Time Format
Terrain
Nearest Airport
Runway Surface
Min Rwy Length
Weather
Com/Nav
Nearest
Com Channel Spacing
25.0 kHz
8.33 kHz
Reverse Frequency Lookup
COM Sidetone Control
Services/
Music
Utilities
System
Keyboard
Messages
Crossfill
Symbols
Figure 16-16 System Setup Functions
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
16-15
Index
1. While viewing the System page, touch the Setup key.
Foreword
Getting
Started
Touch to Select
CDI Scale
Audio &
Xpdr Ctrl
Touch to
Set ILS CDI
Capture
Touch to Select
Nearest Airport
Criteria
Touch to Set Up
Com and Nav
Radios
Com/Nav
FPL
Touch to Set
Time Offset
Direct-To
Touch to Set
Time Format
2. After making the desired selections, touch the Back key to
return to the Setup page.
Charts
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Touch to Enable
Crossfill With Dual
GTN Units
Figure 16-17 System Setup Page
Proc
Wpt Info
Touch to Select
Keyboard Format
16.4.1
CDI Scale Selection
The CDI source and ILS CDI Capture type may be selected manually or
automatically. The selected CDI Scale will be reflected in the annunciation bar at
the bottom of the display.
CDI Scale Selection allows you to define the scale for the course deviation
indicator (both on the GTN unit's on-screen CDI and the external CDI). The
scale values represent full scale deflection for the CDI to either side. The default
setting is “Auto.” At this setting, the CDI scale is set to 2.0 NM during the
“en route” phase of flight. Within 31 NM (terminal area) of your destination
airport, the CDI scale linearly ramps down to 1.0 NM over a distance of 1 NM.
Likewise, when leaving your departure airport the CDI scale is set to 1.0 NM
and gradually ramps up to 2 NM beyond 30 NM (from the departure airport).
During GPS approach operations the CDI scale gradually transitions down to an
angular CDI scale. At 2.0 NM before the final approach fix (FAF), CDI scaling is
tightened from 1.0 NM to the angular full scale deflection (typically the angular
full-scale deflection is 2.0°, but will be as defined for the approach).
Messages
Symbols
Appendix
Index
16-16
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
16.4.3
Nearest Airport Criteria
Nearest Airport Criteria defines the surface type and minimum runway
length used when determining the 25 nearest airports to display on the Nearest
Airport Page. A minimum runway length and/or surface type may be entered
to prevent the display of airports with small runways, or runways that do not
have an appropriate surface. Deselecting Include User Airports excludes
user-defined airports from the nearest airport search.
Default settings are “0 feet (or meters)” for runway length and “any” for
runway surface type.
1. While viewing the System Setup page, touch the
Nearest Airport key.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Touch To Select
Runway Surface Type
Charts
Touch To Select Minimum
Runway Length
Wpt Info
Touch To Include
User Airports
Map
Figure 16-22 Select Nearest Airport Criteria
2. Touch Runway Surface to display the options.
Select the desired surface type.
Touch to Select Any
Runway Surface
Touch to Select Hard
Runway Surfaces Only
Touch to Select Hard or
Soft Runway Surfaces
Touch to Select Water
Surfaces Only
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
Figure 16-23 Nearest Airport Runway Surface Type
3. Touch Minimum Runway Length to display the keypad
for selecting the minimum runway length. Select the desired
minimum runway length with the numeric keypad. A selection
of "0" will allow any length.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
16-19
Index
Touch to Delete Values
Foreword
Getting
Started
Touch to Set Values
Audio &
Xpdr Ctrl
Com/Nav
FPL
Figure 16-24 Nearest Airport Runway Length
Direct-To
4. After selecting the runway length, touch the Enter key to
save the entered values, or touch the Back key to return to
the System Setup page without saving a value.
Proc
Charts
5. Touch Include User Airports to include or exclude user
created airports.
Wpt Info
Map
Traffic
Terrain
Weather
16.4.4
Com/Nav Setup
16.4.4.1 Com Channel Spacing
Com transceiver channel spacing may be selected between 8.33 kHz and
25.0 kHz.
While viewing the Setup COM/NAV page, touch Channel
Spacing to toggle between 8.33 kHz and 25.0 kHz channel
spacing.
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
16-20
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
16.4.4.2 Reverse Frequency Look-Up
The identifier and frequency type will be shown for the selected Com and
Nav frequencies for the nearest stations that are in the database when the unit is
receiving a valid position input. Station Identifiers with a “+” sign will have more
stations associated with this frequency than just the type displayed.
While viewing the Setup COM/NAVpage, touch the Reverse
Frequency Lookup key to toggle the function.
Airport
Identifier and
Type Shown
For Freqs In
Database.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Identifier
and Type
Shown For
Freqs In
Database
The “+” Sign
Indicates
More Stations
Associated
With This
Frequency
Direct-To
Proc
Reverse
Frequency
Lookup
Selected
Charts
Wpt Info
Map
Traffic
Figure 16-25 Reverse Frequency Lookup Selected
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
16-21
Index
Foreword
16.4.4.3
NOTE: This feature is available in software v6.50 and later. It requires
enablement by the installer.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
COM Sidetone Control
COM sidetone is audio spoken into the COM microphone that is played back
in real-time over the headset. An offset setting determines sidetone volume for
the COM during radio transmission. Controls allow adjustment of the amount
that the COM sidetone volume level is offset from the COM receiver volume or
the configured sidetone volume.
Direct-To
Enables Link to
COM Receiver
Volume
Proc
Range: +/-10%
Default Value: 0
Charts
Wpt Info
Offset Adjustment
Controls
Map
Traffic
Figure 16-26 COM Sidetone Controls
To adjust the offset from the COM receiver volume:
Terrain
1. While viewing the System Setup page, touch the Com/Nav
key.
Weather
2. Select Link to COM VOL.
3. Adjust offset as necessary.
Nearest
Services/
Music
To adjust the offset from the configured sidetone volume, deselect
Link to COM VOL and then adjust the offset as necessary.
Utilities
System
Messages
Symbols
Appendix
Index
16-22
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
16.4.5
Keyboard Format
Foreword
NOTE: The QWERTY keyboard format is available in software v6.50
and later.
The GTN 7XX employs two keypad types to serve specific settings and
functions.
Tapping Keyboard changes the format between ABC and
QWERTY.
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
ABC
QWERTY
Figure 16-27 Keyboard Formats
Keyboard
ABC
QWERTY
Map
Description
Traffic
Alphabetical layout
U.S. standard keyboard layout
Terrain
Table 16-5 Keyboard Formats
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
16-23
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
16.7
Units Settings
The Units Setup page allows you to select the conventions for the various
units that are displayed.
Units Type
Altitude/Vertical Speed Feet(FT/FPM), Meters (M/MPS)
Distance/Speed
FPL
Fuel1
Direct-To
Proc
Charts
Nav Angle1
Magnetic Variation
Position Format
Wpt Info
Pressure
Temperature1
Map
Traffic
Terrain
Weather
Units Values
Nautical Miles (NM/KT), Kilometers (KM/KPH),
Statue Miles (SM/MPH)
Gallons (GAL), Imperial Gallons (IG), Kilograms (KG),
Liters (LT), or Pounds (LB)
Magnetic (°), True (°T), User (°u)
Enter numeric value, E or W
LAT/LON DD.D°, LAT/LON DD° MM.M', LAT/TON DD°
MM'SS", MGRS, UTM, Swiss Grid, Irish Grid,
British National Grid
Inches of Mercury (IN), Hectopascals (HPA), Millibars (MB)
Celsius (°C) or Fahrenheit (°F)
Table 16-9 System Units Setup
Note 1: Only these unit types will be crossfilled in dual GTN installations.
16.7.1
Setup Units
Use these settings to set the units for values displayed in the unit operation.
1. While viewing the System page, touch the Units key.
Nearest
Services/
Music
Utilities
Touch To Set
Units
System
Messages
Symbols
Figure 16-36 System Units Page
Appendix
Index
16-32
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
16.7.3
Position Format Selection
There are multiple position formats available.
LAT/LON DD.D° **
British National Grid **
MGRS *
LAT/LON DD°MM.M'
Irish National Grid **
UTM *
LAT/LON DD°MM'SS" ** Swiss National Grid **
* Software v4.10 and later.
** Software v6.50 and later.
The selected format is used in all locations where position information is
available.
Proc
Grid
Designator
Charts
100 km Square
Identifier
Easting Value
Wpt Info
Map
Northing Value
Figure 16-42 MGRS Position Format Detail
Traffic
Grid Zone
Terrain
Latitude Band
Easting Value
Weather
Nearest
Services/
Music
Utilities
Northing Value
Figure 16-43 UTM Position Format Detail
In the case of regional position formats (e.g., Swiss National Grid), the GTN
defaults to displaying LAT/LON for any positions outside of the grid region.
Easting Value
Grid
Designator
System
Messages
Symbols
Northing Value
Figure 16-44 British National Grid Position Format Detail
Appendix
Index
16-36
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
Easting Value
Grid
Designator
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Northing Value
Figure 16-45 Irish National Grid Position Format Detail
Com/Nav
FPL
Easting Value
Direct-To
Proc
Charts
Northing Value
Wpt Info
Figure 16-46 Swiss National Grid Position Format Detail
Map
1. While viewing the System page, touch Units key.
2. Touch the Position Format key.
Traffic
Touch To Select
Position Format
Terrain
Weather
Nearest
Services/
Music
Utilities
Figure 16-47 Position Format Selection
3. Touch the desired Position format.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
16-37
Index
Touch To Automatically
Connect To The Device
When In Range
Foreword
Touch To Remove
The Device
Getting
Started
Device Is
Connected And
Communicating
Audio &
Xpdr Ctrl
Device Is Not
Connected Or
Communicating
Com/Nav
FPL
Direct-To
Proc
Figure 16-52 Managing Paired Devices
Charts
16.11.2 Pairing a Device
Wpt Info
New devices can only be paired with the Flight Stream when it is in “Pairing
Mode.” The Flight Stream will be in pairing mode when the GTN is navigated
to the Connext Setup page and/or the Manage Paired Devices page. The pairing
must be initiated by the portable device. Pop-ups display on both the portable
device and GTN to confirm the pairing. Verify the passkey displayed on the
GTN matches that on the portable device.
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
Figure 16-53 Confirm Pairing With A New Device
Selecting “Manage Paired Devices” opens a page that lists all of devices paired
to the Flight Stream.
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
16-43
Index
Message
Description
Action
Foreword
User has configured
a vertical descent
calculation, and the
aircraft is approaching
the target altitude.
Visual approach could
VISUAL
APPROACH NOT not transition to
active. Guidance is not
ACTIVE Approach guidance available.
not available when
requesting
Direct-To runway.
VLOC RECEIVER - The nav radio is not
Navigation receiver communicating properly
with the system.
has failed.
No action is necessary; message is
informational only.
Getting
Started
VLOC RECEIVER - The nav radio is
Navigation receiver reporting to the GTN
that it needs service.
needs service.
The nav radio may
continue to function.
Current altitude
VNAV constraint cannot be
Unable to reach
vertical waypoint. reached based on
current ground and
vertical speeds.
The lateral flight plan
VNAV contains a procedure
Unavailable.
turn, vector, or other
Upcoming flight
unsupported leg type
plan leg not
prior to the active
supported.
vertical waypoint.
Current crosstrack
VNAV exceeds limit, causing
Unavailable.
vertical path guidance
Excessive
to become invalid.
crosstrack error.
Use GPS based navigation. Contact
dealer for service.
VCALC Arriving at VCALC
target altitude.
190-01007-03 Rev. Q
Audio &
Xpdr Ctrl
Reactivate the approach or cancel
the Direct-To course.
Com/Nav
FPL
Direct-To
Proc
Use GPS based navigation. Contact
dealer for service.
Charts
Wpt Info
Map
Traffic
Attempt to intercept vertical path
by adjusting aircraft altitude.
Terrain
Weather
Nearest
Treat the flight plan segments
before and after the affected leg as
separate vertical profiles. The GTN
cannot provide automatic guidance
between the two segments.
Navigate within 10 nm of flight
plan centerline, or edit flight plan
to allow for vertical navigation.
GTN 725/750 Pilot’s Guide
Services/
Music
Utilities
System
Messages
Symbols
Appendix
17-25
Index
Message
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
VNAV Unavailable.
Excessive track
angle error.
VNAV Unavailable.
Parallel course
selected.
VNAV Unavailable.
Barometric altitude
lost.
Current track angle
error exceeds limit,
causing vertical path
guidance to become
invalid.
Selecting a parallel
course causes vertical
path guidance to
become invalid.
A loss of data from
the barometric altitude
sensor causes vertical
path guidance to
become invalid.
User has configured
WAYPOINT the arrival alarm and
Arriving at [wpt
is within the specified
name].
distance.
The weather radar
WX ALERT system is indicating
Possible severe
the presence of severe
weather ahead.
weather ahead.
WX RADAR FAIL - The GTN is configured
for a weather radar but
Weather radar is
is not receiving data
inoperative.
from it. Weather Radar
will not be displayed on
the GTN.
Weather radar is
WX RADAR
reporting a system
SERVICE fault.
Weather radar
needs service.
Return unit for
repair.
Action
Navigate within 70° of active flight
plan course.
Disable parallel track if vertical
path guidance is desired.
Contact dealer for service.
No action is necessary; message is
informational only.
Check weather radar. See
section 12.4.7.2 for more
information.
Contact dealer for service.
Contact dealer for service.
Table 17-1 Messages
Appendix
Index
Description
17-26
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
18
SYMBOLS
Foreword
The following tables describe the symbols that are found on the Map display.
18.1
Symbol
Map Page Symbols
Description
Airport with hard surface
runway(s); Non-Serviced,
Primary runway shown
Airport with soft surface
runway(s) only, Non-Serviced
Restricted (Private) Airfield
Symbol
Getting
Started
Audio &
Xpdr Ctrl
Description
Airport with hard surface
runway(s); Serviced, Primary
runway shown
Airport with soft surface
runway(s) only, Serviced
Unknown Airport
Heliport
NDB
Intersection
Locator Outer Marker
VOR
VOR/DME
VORTAC
DME
TACAN
TOD/BOD
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
User Waypoint
User Airport
ATK
VRP
Weather
Table 18-1 Map Page Symbols
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
18-1
Index
19.4 Glove Qualification Procedure
Foreword
NOTE: This procedure is not authorized for completion during flight.
Perform all tasks while the aircraft is on the ground.
The touchscreen uses capacitive touch technology to sense the proximity of
skin to the display. A glove creates a barrier between the skin and the display
glass, potentially reducing the ability of the display to detect touches.
This procedure qualifies a specific glove for use with the touchscreen. Due
to differences in finger size, glove size, and touchscreen between the GTN 6XX
and GTN 7XX units, the qualification procedure is specific to the pilot/glove and
GTN combination. Multiple units must be evaluated individually.
Glove Selection Considerations
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
• Thinner gloves perform better than thicker gloves
• Leather gloves, and gloves designed specifically for use with capacitive
touchscreen devices, are often found to be acceptable
• To improve touchscreen sensitivity while wearing gloves, use the pad of
your finger instead of the tip during touch interactions
Glove Qualification Guidance
Charts
Wpt Info
Map
Traffic
• Table 19-3 contains the tasks required to qualify a glove
• Table 19-4 contains tasks that are not required to qualify a glove, but may
limit how some functions are accessed while wearing a glove
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
19-21
Index
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Glove Qualification Steps
1.
2.
3.
4.
5.
Direct-To
6.
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
7.
Complete only the tasks for the capabilities relevant to the installed GTN(s).
Sit in the pilot’s seat.
Start the GTN in demo mode by pressing and holding the Direct To key during
power up.
Perform the tasks listed in Table 19-3 and Table 19-4, tapping each key with a
non-gloved finger. It is not necessary to record any results for this step.
Repeat step 3 using a gloved hand.
For each task, determine whether the touchscreen response is the same or worse
than without the glove.
Record the results in the applicable table. Items that may cause the operation to be
worse include, but are not limited to:
a. Multiple attempts to select a key
b. Unintentional selection of adjacent key(s)
c. Excessive force on the touchscreen to select a key
If all applicable tasks produce the same response with and without a glove, the
pilot may use the glove in flight.
Glove Qualification Procedure
Pilot:
Glove Description:
Circle the applicable GTN.
Nearest
6XX
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
7XX
Task
Operation With Glove
(circle one)
Starting from the Home page:
Demo
GPS
Waypoint
Type the airport identifier“KSLE.”
Enter
Return to the Home page.
19-22
GTN 725/750 Pilot’s Guide
Same
Same
Same
Same
Same
Worse
Worse
Worse
Worse
Worse
190-01007-03 Rev. Q
Task
Operation With Glove
(circle one)
Flight Plan
Add Waypoint
Type the airport identifier“KSLE.”
Enter
Add each of the following waypoints in the same manner.
KMMV
KONP
BTG
Select BTG.
Load Airway
V23
ALFOR
Load
Scroll the list of flight plan waypoints up and down
using the arrow keys.
Back
GTN 635/650/750 only
Select the COM STBY frequency field.
Type a valid frequency.
Enter
Select the active COM frequency field. Observe the two
frequency values swap positions.
GTN 750 only
Select the active NAV frequency field. Observe the two
frequency values swap positions.
GTN 650 only
Menu
Same
Same
Same
Same
Worse
Worse
Worse
Worse
Same
Same
Same
Same
Same
Same
Same
Same
Same
Worse
Worse
Worse
Worse
Worse
Worse
Worse
Worse
Worse
Same
Worse
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Same
Same
Same
Same
Worse
Worse
Worse
Worse
Same
Worse
Weather
Nearest
Services/
Music
Utilities
System
Same
Worse
Messages
Table 19-3 Tests Required for Glove Qualification
Symbols
Appendix
190-01007-03 Rev. Q
GTN 725/750 Pilot’s Guide
19-23
Index
Task
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Operation With Glove
(circle one)
Open the Active Flight Plan page.
With one finger on the page, drag the waypoint list up
and down.
With one finger, tap and swipe the list up or down.
Same
Same
Worse
Worse
Same
Worse
Back
Open the Map page.
Graphically Edit FPL
Tap and drag KONP to an empty area of the map,
panning and zooming as necessary. Observe that KONP
is removed from the flight plan.
Drag the leg between KMMV and BTG to KSPB.
Observe that KSPB is added to the flight plan.
Same
Same
Same
Same
Worse
Worse
Worse
Worse
Same
Worse
Table 19-4 Tests Not Required for Glove Qualification
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
19-24
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
© 2018 Garmin Corporation
flyGarmin.com
August 2018
190-01007-19 Rev. A
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