# STC SA01801AT - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Power Flow Systems Inc, United States - Description: For the Cessna 172 airplane models incorporating Lycoming O-320 engines: Modification of the standard exhaust system as documented in Laminar Flow Systems Installation Instructions Document, "Laminar Flow System Extractor Exhaust System" Revision A, dated, November 20, 1998 and Technical Drawing List, Book No. PFS-B-800, dated, November 16, 1998 or per Power Flow Systems, Inc. Installation Instructions Document PFS-0058-00, Rev. A, dated October 5, 2001 and Master Drawing List, Report No. PFS-0032-00, Rev. IR, dated August 10, 2000, or later FAA approved revisions. For the Cessna 172 airplane models incorporating Lycoming O-320 ,O-360 0r IO-360 engines: Modify the standard exhaust system as document in Power Flow Systems, Inc. Installation Instructions Document PFS-13250-00, Rev B, dated, December 9, 2002 and Master Drawing list PFS-13240-00, Rev, IR, dated October 3, 2002. - Applied: May 30, 1997 - Status date: May 20, 2025 - Product: Aircraft, Small Airplane - Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS A4EU](https://openairdocs.org/tcds/A4EU), [TCDS 3A17](https://openairdocs.org/tcds/3A17) - Certificate PDF: https://openairdocs.org/files/sha256/50/6a/506adb1d950f059573720ef66ac6441dcb35c411ab9435d026fcd50fd4b4b350 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137306064220250523135113.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA01801AT ## ADs that name it (0) None. ## Approved models (34) - Reims Aviation S.A. Cessna F172D ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172E ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172F ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172G ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172H ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172K ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172L ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172M ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172N ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Reims Aviation S.A. Cessna F172P ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Textron Aviation Inc. 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172S ([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)) - The Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172F ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172H ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - The Cessna Aircraft Company 172H (USAF T-41A) ([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)) - The Cessna Aircraft Company 172Q ([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: SA01801AT This certificate issued to: Power Flow Systems, Inc. 795 Fentress Blvd, Ste A & B Daytona Beach, FL 32114 3, 36 of Civil Air and CFR 14 . Original Product Type Certificate Number: 3A12 A4EU 3A17 Make: Cessna; Cessna-Reims Aviation Model: 172, A-H; 172 I; 172 K-N, P; (Cont.) For the Cessna 172 airplane models incorporating Lycoming 0-320 engines: Modification of the standard exhaust system as documented in Laminar Flow Systems Installation Instructions Document, "Laminar Flow System Extractor Exhaust System" Revision A, dated, November 20, 1998 and Technical Drawing List, Book No. PFS-B-800, dated, November 16, 1998 or per Power Flow Systems, Inc. Installation Instructions Document PFS-0058-00, Rev. A, dated October 5, 2001. (See continuation sheet 3) This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness (See continuation sheet 3) Date of Application: May 30, 1997 Date Reissued: June 22, 2000; October 16, 2003 Date of Issuance: January 7, 1999 Date Amended: July 24, 2003; August 22, 2003; (Cont.) (for) Christina M. Underwood Manager, East Certification Branch United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA01801AT (Continuation Sheet) Number: SA01801AT Model (cont.): 172Q, 172R, 172S; F172D thru F172H; F172K-N, F172P; 175, 175A, 175B, 175C Description of Type Design Change (cont.): Installation Instructions Document PFS-0058-00, Rev. A, dated October 5, 2001. For the Cessna 172 and 175 airplane models incorporating Lycoming 0-320 ,0-360 or 10-360 engines: Modify the standard exhaust system as document in Power Flow Systems, Inc. Installation Instructions Document PFS-13250-00, Rev B, dated, December 9, 2002. Limitations and Conditions (cont): of that airplane. 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 Amended(cont.): September 14, 2004; May 20, 2025 ## Every issue (2) - May 20, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/50/6a/506adb1d950f059573720ef66ac6441dcb35c411ab9435d026fcd50fd4b4b350) - September 14, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/31/23/312300db18e95776743641824489d00032cd5930b7e5b53fdbe4987e9ce13c26) --- 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.