# STC SA02200AK - Type: Supplemental type certificate - Status: Current, Amended - Holder: Power Flow Systems Inc., United States - Description: Fabrication of replacement engine exhaust system assembly (P/N PA18ESA). - Applied: November 3, 1999 - Status date: May 20, 2025 - Product: Aircraft, Small Airplane - Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2) - Certificate PDF: https://openairdocs.org/files/sha256/8f/0d/8f0d56b00b72cd94a7ac5e93d6bccde3c83e6412d15e3c9ed62d658c4c1353fa - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132702021820250523171129.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA02200AK ## ADs that name it (0) None. ## Approved models (18) - Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-125 (Army L-21A) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18A ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18A-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18A-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18AS-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18AS-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18AS-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-19 (Army L-18C) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-19S ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) ## 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: SA02200AK FAA Form 8110-2 (03/21) Page 1 of 3 This certificate issued to: Power Flow Systems, Inc. 795 Fentress Blvd, Ste A & B Daytona Beach, FL 32114 PT 3 of Civil Aviation Regulations . Original Product Type Certificate Number: 1A2 Make: Piper Model: See Continuation Sheet Page 3 of 3, for a Description of Type Design Change: list of approved airplane models. Fabrication of replacement engine exhaust system assembly (P/N PA18ESA) in accordance with Leading Edge Exhaust Systems, LLC, Drawing List No. LEESPA18"180"ESA-DL-1, Revision B, dated July 26, 2010, or later FAA approved revision, and installation in accordance with Leading Edge Exhaust Systems, LLC, Exhaust System Installation and Maintenance Instructions, Report No. LEESPA18EXH -INST-1, Revision H, dated June 21, 2010, or later FAA approved revision. 1) Compatibility of this design change with previously approved modifications must be determined by the installer. Approval of this design change is limited to airplanes of the following models that are equipped with FAA approved installations of Textron Lycoming O-360 model series engines having a compression (See continuation sheet 3 of 3) Date of Application: November 3, 1999 Date Reissued: August 19, 2010 April 24, 2003; August 19, 2010; May 20, 2025 Date of Issuance: January 24, 2003 Date Amended: (for) Christina M. Underwood Title: Manager, East Certification Branch United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA02200AK FAA Form 8110-2 (03/21) Page 2 of 3 (Continuation Sheet) Number: SA02200AK Limitations and Conditions (Cont.) ratio of 8.5:1 and a rated power of 180 horsepower for all operations, only: PA-18, PA-18S, PA-18 “105” (Special), PA-18S “105” (Special), PA-18A, PA-18 “125” (Army L-21A), PA-18S “125”, PA-18AS “125”, PA-18 “135” (Army L-21B), PA-18A “135”, PA-18S “135”, PA-18AS “135”, PA-18 “150”, PA-18A “150”, PA-18S “150”, PA-18AS “150”, PA-19 (Army L-18C), and PA-19S. 2) This design change is not eligible for installation on airplanes equipped with 150 horsepower or 160 horsepower engines. 3) The installer must determine whether this design change is compatible with previously approved modifications. 4) FAA approved Airplane Flight Manual Supplement (AFMS) Document No. LEES180AFMS, Revision 1 dated April 24, 2003, or later FAA approved revision, is a required part of this installation. 5) If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of such permission. - END - ## Every issue (2) - May 20, 2025: Amended, Current. [certificate](https://openairdocs.org/files/sha256/8f/0d/8f0d56b00b72cd94a7ac5e93d6bccde3c83e6412d15e3c9ed62d658c4c1353fa) - August 19, 2010: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/39/8d/398d3ff36e53901cbe311d44008c6dd7a02cd44461f6b65cefd4fe4d5d2e9212) --- 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.