190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page A-1
APPENDIX A FLIGHT TEST PLAN FOR AUTOPILOT TUNING
A.1 Introduction
This flight test plan provides a general outline for testing and tuning the G3X™ avionics autopilot
installation.
This flight test plan assumes the aircraft and pilot have already completed the associated autopilot
configuration and test steps in the G3X Installation Manual including the Servo Wiring Checkout
(Appendix H.4.5.3
for G3X or Section 30.4.10.5 for G3X Touch™ avionics) and Autopilot Setup
(Appendix H.4.5.4
for G3X or Section 30.4.10.6 for G3X Touch) sections.
WARNING
This stage of the flight test involves allowing the GSA 28 autopilot servos to manipulate the
flight control surfaces of the aircraft. Extreme caution should be used during the
engagement and tuning of the autopilot system. The pilot should always have easy access to
the autopilot disconnect button to disconnect the autopilot and take control of the aircraft at
any time.
A.2 Flight Test Outline
Perform and complete each of the tasks 1-15 in Table A-1 in order.
Table A-1 Flight Test Outline
Task Description
1)
Verify GSA 28
Servo Arm to
Aircraft Control
Linkage
The GSA 28 autopilot servos will have the finest control, most torque, and least
amount of slop when connected to the control linkage using the inner most hole on
the GSA 28 servo arm. This will provide the best autopilot control and experience
for the user.
For most of the RV series of aircraft, the optimum servo arm mounting hole has
been determined and documented in the installation manual, and is not always the
inner hole. Use this guidance when available, and follow the WARNING below for
any installation.
Verify GSA 28 is Connected to the Inner Most Hole Possible:
1. Connect the GSA 28 control servo arm to the inner most hole possible while
still allowing for proper aircraft control linkage movement.
WARNING
It is vital to make sure the autopilot servo and aircraft control
linkage is free to move throughout its entire range of travel without
binding or interference. Failure to provide adequate clearance
between the moving parts of the control system linkage and nearby
structure could result in serious injury or death.
2)
Disable Trim
Motor Control
Initial autopilot tuning is done with the trim control disabled to avoid the auto-trim
function from interfering with the initial autopilot tuning.
Disable Trim Motor Control:
1. In configuration mode go to the Trim Configuration page
2. Disable “Trim Motor Control” for all servos
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