# STC SA02115AT - Type: Supplemental type certificate - Status: Current, Amended - Holder: Power Flow Systems Inc. - Description: Modification of engine exhaust system for improved engine performance by installation of a Laminar Flow System extractor exhaust system. - Status date: May 20, 2025 - Data sheets: A13CE, A13CE - Certificate PDF: https://openairdocs.org/files/sha256/4e/22/4e22f20837fb98af4fd86affd35b038d64de9079fa3434b346c1517d5ffaf745 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187100992820250523170613.0001 - Page: https://openairdocs.org/stc/SA02115AT ## ADs that name it None. ## Approved models (2) - The Cessna Aircraft Company 177A (TCDS A13CE) - The Cessna Aircraft Company 177B (TCDS A13CE) ## 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: SA02115AT This certificate issued to: Power Flow Systems, Inc. 795 Fentress Blvd, Ste A & B Daytona Beach, FL 32114 PT 23 of Federal Aviation Regulations. Original Product Type Certificate Number: A13CE Make: Cessna Model: 177A, 177B Description of Type Design Change: Modification of engine exhaust system for improved engine performance by installation of a Laminar Flow System Extractor Exhaust System per Laminar Flow Systems, Inc., For 177A airplanes: Cessna 177A Installation Instructions, PFS-13702, Revision IR, dated: 07/27/2000. For 177B airplanes: Cessna 177B Installation Instructions, PFS-13703, Revision D, dated: 07/27/00 and Laminar Flow Systems, Inc. Technical Drawing List, Document PFS-177, Rev. D, dated: March 30, 2000 or later FAA approved revisions, Limitations and Conditions: Airplane Flight Supplement Manual is not part of 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: May 20, 1999 Date Reissued: August 25, 2000 Date of Issuance: April 10, 2000 Date Amended: August 15, 2000; May 20, 2025 (for) Christina M. Underwood Title: Manager East Certification Branch United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA02115AT ## Every issue (1) - May 20, 2025: Amended, Current. [certificate](https://openairdocs.org/files/sha256/4e/22/4e22f20837fb98af4fd86affd35b038d64de9079fa3434b346c1517d5ffaf745) --- From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.