# STC SA5711NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: General Aviation Concepts, United States
- Description: Replacement of original 'T' style control yoke with 'Y' style control yoke.
- Applied: April 15, 1992
- Status date: May 21, 2019
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A-799](https://openairdocs.org/tcds/A-799), [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS 3A17](https://openairdocs.org/tcds/3A17)
- Certificate PDF: https://openairdocs.org/files/sha256/52/d8/52d8b320ee48864c7e4390b2b7b4edc0c503062b2952dd0dcccfec0ea6d6715f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5B04CC275EDB344886258273004F4D9D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5711NM

## ADs that name it (0)

None.

## Approved models (13)

- Textron Aviation Inc. 170 ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- Textron Aviation Inc. 170A ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- Textron Aviation Inc. 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- 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. 175 ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Textron Aviation Inc. 175A ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Textron Aviation Inc. 175B ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Textron Aviation Inc. 175C ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Textron Aviation Inc. P172D ([TCDS 3A17](https://openairdocs.org/tcds/3A17))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Part 3 of the Civil Aviation Regulations.

Replacement of original “T” style control yoke with “Y” style control yoke. Applicable part numbers are listed in General Aviation Concepts Document No. GAC – DOC – 17X-1 Rev. Original, dated April 20, 2018, or later FAA approved revision. Installation is to be accomplished in accordance with General Aviation Concepts Document No.

GAC – DOC – 17X-1 Rev. Original, dated April 20, 2018, or later FAA approved revision.

1) The installer must determine whether this design change is compatible with previously approved modifications.

2) If the holder agrees to permit another person to use this Certificate to alter the product, the holder shall give the other person written evidence of that permission.

3) The FAA has determined that no additional Instructions for Continued Airworthiness are required for this STC.

Date of application: April 15, 1992

Date of issuance: April 29, 1992

General Aviation Concepts 3033 Taxilane A North Pole, AK 99705 A-799, 3A12, and 3A17 Cessna 170, 170A, and 170B 172, 172A, 172B, 172C, and 172D 175, 175A, 175B, 175C, and P172D Date reissued: April 11, 2018; April 13, 2018;

Date amended: May 21, 2019

(Signature) August A. Asay Manager, Anchorage ACO Branch

(Title)

## Every issue (2)

- May 21, 2019: Amended, Current. [certificate](https://openairdocs.org/files/sha256/52/d8/52d8b320ee48864c7e4390b2b7b4edc0c503062b2952dd0dcccfec0ea6d6715f)
- April 11, 2018: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/af/04/af048d6cd4cc3faafaa1632121b9cbafc79fbf1dcbf3c4e9a2e3abf21dc03ca0)

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