GRT Avionics Horizon 10.1 User manual

Sport/Horizon 10.1
User Manual
Preliminary - September 2019
GRT Avionics, Inc.
3133 Madison Avenue SE
Wyoming, MI 49548
616-245-7700
[e-mail]
www.grtavionics.com

GRT Avionics, Inc. September 2019
Sport/Horizon 10.1 Pilot’s Guide I Rev. Preliminary
1FOREWORD
Thank you for choosing the GRT EFIS!
This manual describes the operation of a Horizon 10.1 and Sport 10.1 EFIS using the
software version shown in the Record of Revisions. Some differences may be observed
when comparing the information in this manual to other software versions. The Sport 10.1
EFIS may optionally be equipped with synthetic vision and vertical autopilot command
capability. Every effort has been made to ensure that the information in this manual is
accurate and complete. GRT is not responsible for unintentional errors or omissions in the
manual or their consequences. The builder of the aircraft and the pilot have the final
authority on the airworthiness of the aircraft.
Information in this document is subject to change without notice. GRT Avionics, Inc.
reserves the right to change or improve their products and to make changes in the
content of this material without obligation to notify any person or organization of such
changes or improvements.
Copyright © 2001 - 2019 GRT Avionics, Inc. or its subsidiaries. All rights reserved.
1.1 Important Safety Information
!WARNING!: This is an Experimental EFIS system intended ONLY for use in experimental
and light-sport aircraft. Various functions of this system may be incomplete or untested
with your particular avionics combination. Exercise caution when using the EFIS after
installing new software updates. All software and hardware updates must be tested
thoroughly in VFR conditions before using for IFR flight.
!WARNING!: Obstacle clearance is NOT assured in Synthetic Approach mode.
*CAUTION*: If any display unit is inoperable in a multiple-display system, the display
units will not be able to share information and some features or instruments may become
disabled.
*CAUTION*: If GPS position data is lost for more than 30 seconds, the Sport issues a No
GPS Position warning and automatically reverts to dead-reckoning using the AHRS
heading, true airspeed, last known winds and time. This data is used to estimate changes
in position, which are applied to the last known GPS position to give an approximate

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Sport/Horizon 10.1 Pilot’s Guide II Rev. Preliminary
navigation solution. The accuracy of the dead- reckoning function will degrade with time
depending on the accuracy of this data and changes in the winds.
*CAUTION*: Dual Nav radios tuned to Localizer frequencies with autopilot function ARM
engaged will result in the EFIS Sport selecting either NAV radio to fly the Localizer.

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Sport/Horizon 10.1 Pilot’s Guide III Rev. Preliminary
1.2 Warranty and Return Policy
Satisfaction Guarantee
If for any reason you are unhappy with your GRT product, you may return it for a refund
anytime during the first 60 days you own it.
Please call EFIS Tech Support before returning any system or component.
Limited Warranty
All GRT products include a 2-year warranty starting on the day the instrument is put into
service (or three years after purchase, whichever comes first) against manufacturer defect.
Contact Tech Support before returning a display unit or component to GRT for repair or
warranty work. Many issues are installation-related and can be resolved over the phone,
saving expense. All returns for repair or upgrade must be accompanied by a Service
Request Form, downloadable from the GRT website Support section.
1.3 Technical Support
Our tech support staff has real-world experience installing, flying and troubleshooting
GRT equipment in many different types of aircraft. We are here to help you.
Please visit the Contact page of our website for up-to-date contact information for tech
support via email.
Check the home page of the GRT website often for new manual updates, video tutorials,
and other instructional materials as we release them.

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Sport/Horizon 10.1 Pilot’s Guide IV Rev. Preliminary
1.4 RECORD OF REVISIONS
Revision Date
EFIS
SW Revision
Description
A
August 2019
3.00
Initial Release

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Sport/Horizon 10.1 Pilot’s Guide V Rev. Preliminary
2Contents
1FOREWORD..............................................................................................................................................I
1.1 Important Safety Information ....................................................................................................I
1.2Warranty and Return Policy..................................................................................................... III
Satisfaction Guarantee ...................................................................................................... III
Limited Warranty................................................................................................................. III
1.3 Technical Support........................................................................................................................ III
1.4 RECORD OF REVISIONS ............................................................................................................IV
3Introduction ........................................................................................................................................... 1
3.1 Revisions .......................................................................................................................................... 1
3.2 Warnings, Cautions and Notes................................................................................................ 1
3.3 EFIS Control Sequence Instructions....................................................................................... 1
3.4 Electronic Manuals and Internet Links.................................................................................. 2
3.5 Transition from Round Gauges to Glass Cockpit.............................................................. 2
3.6 Feedback and Corrections......................................................................................................... 2
4GENERAL SYSTEM INFORMATION ................................................................................................ 4
4.1 The Sport/Horizon 10.1.............................................................................................................. 4
4.2 AHRS and Air Data Computer.................................................................................................. 6
Adaptive AHRS Operation ................................................................................................ 6
AHRS/Air Data Computer Limitations .......................................................................... 7
4.3 Optional Components and Software..................................................................................... 8
EIS Engine Monitor.............................................................................................................. 8
GRT Autopilot........................................................................................................................ 8
ARINC 429 Module.............................................................................................................. 8
GPS Receiver Compatibility .............................................................................................. 9
Synthetic Vision .................................................................................................................... 9
5OPERATING THE EFIS........................................................................................................................10
5.1 System Power-Up.......................................................................................................................10
5.2 The Pilot’s Controls....................................................................................................................11
Softkeys .................................................................................................................................11

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Knobs......................................................................................................................................12
Right Knob Short Cut Functions...................................................................................12
Remote Radio Rack and EFIS Shortcut Softkeys.....................................................13
5.3 The Settings Menu.....................................................................................................................17
Settings Menu Pages ........................................................................................................17
Adjusting Individual Settings.........................................................................................18
5.4 Display Page Groups .................................................................................................................20
Selecting the View .............................................................................................................20
Split Screen PFD View.......................................................................................................22
Full Screen PFD View.........................................................................................................23
Six Pack PFD View ..............................................................................................................24
Full Screen Map View .......................................................................................................26
MAP and PFD Insets..........................................................................................................27
Split views of Plates...........................................................................................................30
Split Map/Engine View.....................................................................................................32
5.5 Single Screen Operation ..........................................................................................................32
Single screen EFIS with no EIS or GPS navigator....................................................32
Single screen with an external GPS navigator .........................................................33
Single Screen with a non-Remote (display equipped) EIS..................................33
5.6 Dual Screen Operation .............................................................................................................33
Default Screen .....................................................................................................................34
Pilot’s Interaction with an EFIS ......................................................................................34
6Primary Flight Display Description...............................................................................................36
6.1 Primary Flight Instruments on the PFD ..............................................................................36
6.2 Secondary Information on the PFD .....................................................................................37
6.3 PFD View........................................................................................................................................38
Overview................................................................................................................................38
Central Elements.................................................................................................................39
Attitude Indicator/Artificial Horizon............................................................................39
Attitude Reference Index.................................................................................................39

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Zenith and Nadir (+/- 90° Pitch Display)...................................................................40
Pitch Ladder Offset............................................................................................................40
Sky Pointer............................................................................................................................41
Turn Coordinator/Standard Rate Turn Indicator ....................................................41
Slip Indicator........................................................................................................................41
Flight Path Marker .........................................................................................................42
Airspeed Tape .................................................................................................................42
Altimeter Tape.................................................................................................................44
Vertical Speed Indicator ..............................................................................................47
Heading Indicator..........................................................................................................47
GPS Cross-Track Deviation Indicator (CDI)...........................................................50
Selected Heading Bug..................................................................................................50
Wind Vector and Crosswind Component .............................................................50
G-Meter .............................................................................................................................51
Flap and Trim Indicators..............................................................................................54
Clock ...................................................................................................................................55
Angle-of-Attack (AOA) Indicator..............................................................................55
6.4 Synthetic Vision Features and Settings ..............................................................................59
Terrain ....................................................................................................................................60
Obstacles...............................................................................................................................60
Runways.................................................................................................................................61
Grid Overlay .........................................................................................................................61
Traffic on PFD View ...........................................................................................................62
Waypoint Balloons.............................................................................................................62
Course Ribbons...................................................................................................................63
Enroute Highway-in-the-Sky (HITS) ............................................................................63
7Moving Map Description.................................................................................................................65
Moving Map Database.....................................................................................................66
Map Screen Setup and Customization.......................................................................66
Flying with the Moving Map..........................................................................................70

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8FLIGHT PLANNING AND NAVIGATION......................................................................................83
8.1 Single GPS Navigation..............................................................................................................83
8.2 Multiple Navigation Inputs .....................................................................................................83
8.3Selecting the EFIS Navigation Mode...................................................................................83
8.4 External Navigation Mode (EXTERN)...................................................................................85
8.5 GPS Navigation Mode (GPS/GPS1/GPS2)..........................................................................85
8.6 Loss of GPS Position..................................................................................................................86
8.7 Internal Vs. External Flight Plans...........................................................................................88
8.8 When to Use External Flight Plans .......................................................................................88
8.9 Flight Planning Terms ...............................................................................................................89
8.10 Using Direct-To and Sequence Flight Plans .................................................................89
Direct-To Navigation ....................................................................................................90
Sequential Flight Plans.................................................................................................93
8.11 External Flight Plans ..............................................................................................................96
8.12 Horizontal Situation Indicator (HSI).................................................................................97
8.13 Navigation Using VOR/LOC..............................................................................................100
Initializing VOR/LOC Navigation ............................................................................100
Setting the Selected (OBS) Course ........................................................................100
VOR/LOC CDI Display Options on the PFD ........................................................101
9Autopilot, Flight Director and Navigation Mode Display................................................103
9.1 Overview -- No Servos Required….....................................................................................103
9.2 Autopilot Mode and Target Selection ..............................................................................104
9.3 Selecting Autopilot Modes ...................................................................................................105
9.4 Selecting Autopilot Targets ..................................................................................................106
First Autopilot Menu.......................................................................................................106
Second Autopilot Menu.................................................................................................107
9.5 Engaging the Autopilot..........................................................................................................107
Autopilot Shortcut Menu ..............................................................................................107
9.6Mode Display.............................................................................................................................108
Lateral Autopilot Mode and Target Annunciation...............................................109

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Vertical Autopilot Mode and Target Annunciation .............................................109
9.7 Color Coding..............................................................................................................................110
10 Remote Transponders....................................................................................................................111
10.1 Accessing Transponder Controls....................................................................................111
Setting the Transponder Code................................................................................113
10.2 Transponder Display ...........................................................................................................114
10.3 Squawk and Mode Control from Multiple Display Units.......................................115
10.4 Redundant Transponder Controllers.............................................................................115
11 Graphical Engine Monitoring.......................................................................................................116
11.1 How to use the Graphical Engine Monitoring...........................................................116
11.2 Graphical Engine Monitoring Displays .........................................................................117
Types of Engine Displays...........................................................................................118
Engine Monitoring Strip ............................................................................................120
Engine Display Elements ...........................................................................................121
11.3 CHT/EGT Tools ......................................................................................................................122
What and Why of CHT/EGT Time History ...........................................................122
CHT/EGT Time History Display................................................................................122
EGT Increase and Decrease Alarms .......................................................................124
11.4 Fuel Efficiency and Management Tools .......................................................................125
Recommended Fuel Display Configuration........................................................125
Configuring the Fuel (combined) Dial..................................................................125
Lean Assist ......................................................................................................................126
Fuel Flow, Totalizer and Fuel Level Displays.......................................................127
Interval Alarm................................................................................................................130
Engine Efficiency Measurement Using SFC ........................................................130
Percent Power ...............................................................................................................132
12 GPS/VOR/ILS APPROACHES.........................................................................................................134
12.1 Displays During Approach ................................................................................................134
12.2 GPS Approach........................................................................................................................136
Automatic Capture of GPS Approach Glideslope.............................................136