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    • Trio Pro Pilot Autopilot Aspen E5 Package
    • Cessna 150/152
    • Cessna 170B
    • Cessna 172
    • Cessna 175
    • Cessna 177
    • Cessna 180
    • Cessna 182
    • Cessna 185
    • Cessna 190, 195, LC 126
    • Grumman AA-5
    • Piper PA-24
    • Piper PA-28
    • Piper PA-32
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    • Resources
    • Demonstration Videos
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    • Repairs, Replacements, STC Paperwork
    • The Trio Autopilot can help your aircraft meet the TAA Requirement
    • Company Menu
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    • About The STC Group
    • Contact Information
    • Press Releases & News
  • FREQUENTLY ASKED QUESTIONS
  • SUBMIT YOUR STC INTEREST HERE
  • INSTALLATION & DEALERS
  • PRO PILOT AUTOPILOT BY TRIO AVIONICS
  • ORDER COMPLETE SYSTEM

Documentation

Related public documents

When you purchase an Autopilot and installation kit you will receive the latest FAA Approved Installation Instructions and Illustrated Parts Catalog

Please contact us with any questions.

Documents

Last Updated

Trio Autopilot Troubleshooting Guide  10/2025
SERVICE BULLETIN 001(SW 220322E) 01/2025
SERVICE BULLETIN 002(Servo Mods) 04/2025
SERVICE LETTER 001 (SW 220322F) 10/2025
Trio Autopilot STC 10/2017
Trio Autopilot Current AML 09/2024
Certified Pro Pilot Manual 05/2025
Airplane Flight Manual Supplement 09/2024

Pilot Pro System Wiring Diagram

*NEW* Pilot Pro System Wiring Diagram

EFIS Airdata Wiring Diagram 

12/2020

07/2025

09/2024

EFIS Software Unlock Logbook Example  06/2024
Avionics Addendum 07/2025
LNAV Gain Setting 
VNAV Gain Setting 
Gain Flow Chart 
Gain Setting Information 
Instructions for Continued Airworthiness 09/2024
Trio Autopilot 337 Form Example 02/2025
Post Installation Flight Test
Weight and Balance Example 03/2023
Compatibility List  09/2024
Pitot Static Connections  04/2024
GPS Data Test  09/2022
EFIS Data Test 05/2025
GPS Wiring Diagram  02/2025
Audio Panel Wiring Diagram 

09/2022

Weight & Balance 

 

 

 

 

 

Fusing Tech With Tradition

The STC Group LLC team was assembled to certify the Trio Pro Pilot Experimental autopilot after becoming frustrated with efforts to install a traditional aftermarket autopilot in the founders 1975 Cessna 182P. The STC Group LLC team found that typical analog autopilots were expensive to buy and install and not very sophisticated.

The STC Group, LLC
A Michigan Limited Liability Company

805 – 267 – 1225

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