Piper Comanche Certified Autopilot STC

Regular price
Sale price

Group Buy project

Full-featured, non-TSO’d Trio Pro Pilot digital certified autopilot STC and installation kit for your Piper PA-24-180, PA-24-250, Piper PA-24-260. Piper PA-30 & PA 39  

Whats included?

Trio Pro Pilot Control Head, 2 Servos, complete wire harness, 2 Switches, 1 Circuit Breaker, Placard, STC Kit Hardware and STC paperwork

We currently have 31 Single and 16 Twin Deposits 

Group Buy will remain open until December 1st 2020

Deposit - $1000 

Remaining balance will be due upon the day of STC approval. 

 The Group buy is based on a sliding scale. Please see the contract for more details. 

Research and Development aircraft has been located. 

Thank you - Fly safe!

Please download the contract, scan it and send it to mark.sullivan@thestcgroupllc.com

Developmental Contract (click here)

Less Than 15 Sales All Models

No Discount

Trio Pro PilotTM With Capstan

RETAIL PRICE - $6,995.00

15 to 19 Sales All Models



20 to 24 Sales All Models



25 to 29 Sales All Models



30 or more Sales All Models



We cannot offer a discount for PA-30 and PA-39 kits unless there are a minimum of ten (10) sales for Twin Comanches prior to the six-month anniversary of the AML addition.

All prices are in U.S. Dollars.

  • This equipment must be installed by licensed personnel in accordance with all applicable regulations. In the case of installations in U.S.-registered aircraft, among other things, FAA form 337 must be filed. An aircraft logbook entry must be recorded per 14 CFR Part 91, sections 91.405 & 91.417
  • European sales require a $1,000 USD surcharge to facilitate export processing. Units are approved for installation in the United States of America registered aircraft under the terms of U.S. Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) SA04230CH and its Approved Models List (AML).  The STC Group, LLC does not hold and is not seeking a European Union Aviation Safety Agency (EASA) Supplemental Type Certificate (STC). The units are not certified under Conformité Européenne (CE) standards.  Units are installed in aircraft and administratively validated as a basic modification limited to one aircraft serial number.  Purchaser for use in a non-U.S. registered aircraft assumes all expenses required by the relevant Civil Aviation Authority with jurisdiction over the aircraft including where applicable, EASA.


  • Piper PA-24-180 Autopilot

  • Piper PA 24-250 Autopilot

  • Piper PA 24-260 Autopilot

  • Piper PA-30 Autopilot

  • Piper PA-39 Autopilot