# STC SA03231AT

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Power Flow Systems Inc., United States
- Description: Installation of an improved performance exhaust system.
- Applied: March 1, 2006
- Status date: May 30, 2025
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS A1CE](https://openairdocs.org/tcds/A1CE)
- Certificate PDF: https://openairdocs.org/files/sha256/8a/dc/8adc8b1add9b165baeb5be59c66dec5c544d0d04efce66c7f7b17ffbc5121631
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191273185420250807163303.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA03231AT

## ADs that name it (0)

None.

## Approved models (5)

- Textron Aviation Inc. 19A ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Textron Aviation Inc. 23 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Textron Aviation Inc. A23-19 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Textron Aviation Inc. B19 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Textron Aviation Inc. M19A ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))

## 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA03231AT Power Flow Systems, Inc. This certificate issued to:

795 Fentress Blvd Daytona Beach, FL 32114 PT 3 of Civil Aviation Regulations .

Original Product Type Certificate Number: A1CE Make: Textron Aviation, Inc.

Model: 19A; 23; A23-19; B19, M19A Description of Type Design Change:

Installation of an improved performance exhaust system per Power Flow Systems, Inc., Installation Instructions and Instructions for Continued Airworthiness, Report no. PFS-13850-00, Rev. IR, dated 03/01/06 or later FAA approved revision.

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 the product, the holder shall give the other person written evidence of that permission.

Date of Application: March 1, 2006 Date Reissued:

Date of Issuance: April 24, 2006

Date Amended: May 30, 2025

(for) Christina M. Underwood Title: Manager, East Certification Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA03231AT

## Every issue (3)

- May 30, 2025: Amended, Current. [certificate](https://openairdocs.org/files/sha256/8a/dc/8adc8b1add9b165baeb5be59c66dec5c544d0d04efce66c7f7b17ffbc5121631)
- April 24, 2006: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/d6/fc/d6fcf9fe6c804e96ce17c6fc04802fe27fdfdb010235ba96cd92be017dd445d3)
- April 24, 2006: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/a9/aa/a9aa53a552db8b03a5cf7b4d413315205f2a0aab52c26d40c692d8c74c210e66)

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