# STC SA04230CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: STC Group, LLC, United States - Description: Installation and activation of a Trio Pro Pilot autopilot system - Applied: July 17, 2017 - Status date: October 20, 2017 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12) - Certificate PDF: https://openairdocs.org/files/sha256/be/a7/bea7790cc3b82f7c03c39b72e429693ed6c608e8f14cd74760b19488c9ab8864 - Approved model list and other attachments: [SA04230_AML.pdf](https://openairdocs.org/files/sha256/b9/7f/b97f89dfeb9dbf624bb0bfcf4c6764b4e06ec125897dbbd8bf4ae801a3c233ff) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/351D079D7F6140CF862581C9006AA385.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04230CH ## ADs that name it (0) None. ## Approved models (18) - Textron Aviation Inc. 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172Q ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172S ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) ## What the certificate says Some pages are OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA04230CH This certificate issued to: STC Group, LLC. 480 Ruddiman Drive. North Muskegon MI, 49445 Certifies that the change in the type design for the following product with the limitations and condition's therofore as specified hereen meets the airworthiness requirement's of the Federal Aviation Regulations as denoted on FAA Approved Models List LAO4230CH certification basis. Original Product -Type Certificate * (see attached FAA Approved Model Number Make: List (AML) No. SA04230CH for list of Model: approved models and applicable airworthiness regulations) Description of Type Design Change: Installation and activation of a Trio Pro Pilot autopilot system, per FAA Approved STC Group LLC Master Document List, Document Number 1006000, Revision A, dated 7-13-2017 (or later FAA approved revision) and installation instructions listed on FAA Approved Models List number SA04230CH. Compliance has been established to the regulations listed in AML SA04230CH. This approval should not be extended to aircraft with a regulatory basis differing from that listed in AML SA04230CH without written permission from the Certificate Management Aircraft Certification Office. 2. The autopilot may only be interfaced with external Global Positioning System devices listed in STC Group Document number 1006001, Revision - , dated March 31, 2017 or later FAA approved revision. 3. Installation of the autopilot requires that a quick release (emergency) control must be located on the control wheel on the side opposite the throttles, or on the stick control, such that it can be operated without moving the hand from its normal position on the associated control. Compatibility of this design change with previously approved modifications must be determined by the installer. If the holder agrees to permit another person to use this certificate to alter a product, the holder shall give the other person written evidence of that permission. ...End... Date of Application: July 17,2017 Date Reissued: Date of Issuance: July 19,2017 Date Amended: October October 2017 FEDERAL AVIATION By Direction of the Administrator Timothy P. Smyth (Signature) Manager TOMINSTRATIO Chicago Aircraft Certification Office (Title) (Continued): ### SA04230_AML.pdf **FAA APPROVED MODEL LIST (AML) NO. SA04230CH STC GROUP, LLC.** FOR **INSTALLATION AND ACTIVATION OF A TRIO PRO PILOTAUTOPILOT SYSTEM** ISSUE DATE: October 20, 2017 **ITEM** **AIRCRAFT** **AIRCRAFT** **ORIGINAL TYPE** **CERTIFICATION BASIS** **INSTALLATION** **INSTRUCTIONS** AFM AML **MAKE MODEL CERTIFICATE NUMBER FOR** **ALTERATION** **NUMBER** **REVISION NO. & DATE** **SUPPLEMENT** **NUMBER/DATE** **AMENDMENT DATE** Page 1 of 4 1 Textron Aviation Inc. 172 172A 172B 172D 172C 172E 172F (USAF T-41A) 172G 172H (USAF T-41A) 172I 172K 172L 172M 172N 172P 172Q 172R (non G1000 equipped aircraft only) 172S (non G1000 equipped aircraft only) 3A12 As listed in TCDS 3A12 except as noted below: 14 CFR 23 Amendment 49 for the following: 23.1301, 23.1308, 23.1309, 23.1329 STC Group Document 1006102, and STC Group Document 1006002, STC Group Document 1006102, Rev. -, (or later FAA Approved revision) and STC Group Document 1006002, Rev. -, (or later FAA Approved revision) STC Group Document L-1006- 01, Rev. -, (or later FAA Approved revision) July 19, 2017 **FAA APPROVED MODEL LIST (AML) NO. SA04230CH STC GROUP, LLC.** FOR **INSTALLATION AND ACTIVATION OF A TRIO PRO PILOTAUTOPILOT SYSTEM** ISSUE DATE: October 20, 2017 **ITEM** **AIRCRAFT** **AIRCRAFT** **ORIGINAL TYPE** **CERTIFICATION BASIS** **INSTALLATION** **INSTRUCTIONS** AFM AML **MAKE MODEL CERTIFICATE NUMBER FOR** **ALTERATION** **NUMBER** **REVISION NO. & DATE** **SUPPLEMENT** **NUMBER/DATE** **AMENDMENT DATE** Page 2 of 4 2 Textron Aviation Inc. 182 182K 182A 182L 182B 182M 182C 182N 182D 182P 182E 182Q 182F 182R 182G R182 182H T182 182J TR182 182S (non G1000 equipped aircraft only) T182T (non G1000 equipped aircraft only) 182T (non G1000 equipped aircraft only) 3A13 As listed in TCDS 3A13 except as noted below: 14 CFR 23 Amendment 49 for the following: 23.1301, 23.1308, 23.1309, 23.1329 STC Group Document 1006103, and STC Group Document 1006003, STC Group Document G- 1006-41, Rev. A, (or later FAA Approved revision) and STC Group Document 1006003, Rev. -, (or later FAA Approved revision) STC Group Document L-1006- 01, Rev. -, (or later FAA Approved revision) July 19, 2017 **FAA APPROVED MODEL LIST (AML) NO. SA04230CH STC GROUP, LLC.** FOR **INSTALLATION AND ACTIVATION OF A TRIO PRO PILOTAUTOPILOT SYSTEM** ISSUE DATE: October 20, 2017 **ITEM** **AIRCRAFT** **AIRCRAFT** **ORIGINAL TYPE** **CERTIFICATION BASIS** **INSTALLATION** **INSTRUCTIONS** AFM AML **MAKE MODEL CERTIFICATE NUMBER FOR** **ALTERATION** **NUMBER** **REVISION NO. & DATE** **SUPPLEMENT** **NUMBER/DATE** **AMENDMENT DATE** Page 3 of 4 3 Textron Aviation Inc. 175 175A 175B 175C P172D R172E (USAF T-41B) (USAF T-41C or D) R172F (USAF T-41D) R172G (USAF T-41C or D) R172H (USAF T-41D) R172J R172K 172RG 3A17 As listed in TCDS 3A17 except as noted below: 14 CFR 23 Amendment 49 for the following: 23.1301, 23.1308, 23.1309, 23.1329 STC Group Document 1006102, and STC Group Document 1006002, STC Group Document 1006102, Rev. -, (or later FAA Approved revision) and STC Group Document 1006002, Rev. -, (or later FAA Approved revision) STC Group Document L-1006- 01, Rev. -, (or later FAA Approved revision) July 19, 2017 **FAA APPROVED MODEL LIST (AML) NO. SA04230CH STC GROUP, LLC.** FOR **INSTALLATION AND ACTIVATION OF A TRIO PRO PILOTAUTOPILOT SYSTEM** ISSUE DATE: October 20, 2017 **ITEM** **AIRCRAFT** **AIRCRAFT** **ORIGINAL TYPE** **CERTIFICATION BASIS** **INSTALLATION** **INSTRUCTIONS** AFM AML **MAKE MODEL CERTIFICATE NUMBER FOR** **ALTERATION** **NUMBER** **REVISION NO. & DATE** **SUPPLEMENT** **NUMBER/DATE** **AMENDMENT DATE** Page 4 of 4 4 Piper Aircraft Inc. PA-28-140 PA-28-151 PA-28-150 PA-28-161 PA-28-160 PA-28-181 PA-28-180 PA-28R-201 PA-28-235 PA-28R-201T PA-28S-160 PA-28-236 PA-28S-180 PA-28R-180 PA-28R-200 PA-28-201T 2A13 As listed in TCDS 2A13 except as noted below: 14 CFR 23 Amendment 49 for the following: 23.1301, 23.1308, 23.1309, 23.1329 STC Group Document 1028001 STC Group Document 1006102, Rev. -, (or later FAA Approved revision) and STC Group Document 1006002, Rev. -, (or later FAA Approved revision) STC Group Document L-1006- 01, Rev. -, (or later FAA Approved revision) October 20, 2017 FAA APPROVED: Timothy P. Smyth Manager Chicago Aircraft Certification Office Issued: October 20, 2017 (pages 4 of 4) ## Every issue (1) - October 20, 2017: Amended, Current. [certificate](https://openairdocs.org/files/sha256/be/a7/bea7790cc3b82f7c03c39b72e429693ed6c608e8f14cd74760b19488c9ab8864), [SA04230_AML.pdf](https://openairdocs.org/files/sha256/b9/7f/b97f89dfeb9dbf624bb0bfcf4c6764b4e06ec125897dbbd8bf4ae801a3c233ff) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.