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What's New?

STC for Cessna Aircraft
The STC Group, LLC has been awarded a STC to allow installation of our Pro Pilot in Certified Aircraft.  If you are interested...

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We Have Moved

Our new address is:
1905 N. Marshall Ave.
El Cajon, CA 92020


Mandatory Service Bulletin Click Here

Pro Pilot Videos Here

The GX PRO autopilot is now available for use with the Garmin G3X EFIS

Pro Pilot Brochure

A Fuel Management system for the Pro Pilot is now a standard feature (no cost).  See it here.

Wing Servo Mounting Brackets are now available for the RV-7, RV-8, RV-9 & RV-10.  Installation illustration here.

RV-4 & RV-6 Wing Servo Mount Kit is here

Note: Specify which aircraft when ordering



















STC for Cessna 172 and 182 is approved

The FAA has granted approval to The STC Group, LLC for installation of the Pro Pilot installation kits in Cessna 172 and 182 aircraft.  It is expected that they will also gain approval for the Cessna 177 and Piper PA-28 before AirVenture in Oshkosh in early August.  Other aircraft will be added. Trio Avionics is well along in its application for a PMA for the Pro Pilot to be installed in these aircraft. 

Details Here


Trio Avionics designs and manufactures autopilot products engineered for outstanding performance, while keeping them attractively priced for the Experimental, LSA and Warbird aircraft market.  Innovative design and the use of modern solid state sensors provides superior navigation capability at a price that was not possible until now.  Our products are designed by pilots for pilots, and we fly them every day. 

Pro Pilot Autopilot

GX PRO Autopilot

EZ Pilot Autopilot

Altitude Control Systems

Gold Standard Servos

Harness Assemblies

Do I Really Need An Autopilot?

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