# STC SA02228AT

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Power Flow Systems Inc, United States
- Description: For model 172 airplanes with Lycoming O-360 engines per STC SA332GL or STC SA4428SW, modification of standard exhaust system. For model 172 with Lycoming O-360 engines per STC SA647CE or STC SA1324CE, modification of standard exhaust system.
- Applied: July 20, 2000
- Status date: May 20, 2025
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/37/ad/37ad7bad8a28d493b5fe417174ef3d708730bd8fe52c6aafaa46c8fe3e43f721
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171704890020250523171858.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA02228AT

## ADs that name it (0)

None.

## Approved models (7)

- The Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## 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: SA02228AT

This certificate issued to: Power Flow Systems, Inc.

795 Fentress Blvd, Ste A & B Daytona Beach, FL 32114

PT 3 of Civil Air Regulations .

Original Product Type Certificate Number: 3Al2 Make: Cessna

Model: 172, 172A-I; 172 K-N; 172P Description of Type Design Change:

For the Cessna 172 airplane models incorporating Lycoming 0-360 engines per STC SA332GL, STC SA4428SW or STC SA703GL: Modification of the standard exhaust system as documented in Power Flow Systems, Inc. Installation Instructions PFS-13202, Revision A dated September 21, 2000 or later FAA Approved Revisions.

For the Cessna 172 airplane models incorporating Lycoming 0-360 engines per STC SA647CE, STC SA1324CE or STC SA807CE: Modification of the standard exhaust system as (See continuation sheet 3) Limitations and Conditions:

Airplane Flight Manual Supplement is not required with this STC. 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: July 20, 2000 Date Reissued:

Date of Issuance: October 17, 2000

Date Amended: January 16, 2001; May 20, 2025

(for) Christina M. Underwood Manager East Certification Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA02228AT

(Continuation Sheet) Number: SA02228AT Description of Type Design Change (cont.):

documented in Power Flow Systems, Inc. Installation Instructions PFS-13203, Revision A dated September 21, 2000 or later FAA Approved Revisions.

End

## Every issue (1)

- May 20, 2025: Amended, Current. [certificate](https://openairdocs.org/files/sha256/37/ad/37ad7bad8a28d493b5fe417174ef3d708730bd8fe52c6aafaa46c8fe3e43f721)

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