# STC SA4-456 - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Kenmore Air Harbor Inc, United States - Description: Removal of Lycoming O-235-C1 engine and Installation of Lycoming O-320-A1A or one of the following optional Lycoming engines, O-310A1B, O-310-A2a, O-310-A2B, O-310-A2C, O-0320A2D, O-320-C1A, O-320-C1B, O-320-C2A, O-320-C2B, O-320-C2C - Applied: March 24, 1958 - Status date: April 5, 2019 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS A-780](https://openairdocs.org/tcds/A-780) - Certificate PDF: https://openairdocs.org/files/sha256/92/b2/92b2cf0680369be8028f8d05c1ebd73233091596e1d46cfa13e6c137af56b8ae - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F83D9B94A1B29C1A862585CE004597F4.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA4-456 ## ADs that name it (0) None. ## Approved models (2) - FS 2003 Corp. PA-12 ([TCDS A-780](https://openairdocs.org/tcds/A-780)) - FS 2003 Corp. PA-12S ([TCDS A-780](https://openairdocs.org/tcds/A-780)) ## 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. Number SA4-456 This certificate, issued to Kenmore Air Harbor, LLC. 6321 NE 175th Street Kenmore, WA 98028 Part 3 of the Civil Air Regulations. Original ProductType Certificate Number: A-780 Make: Piper Model: PA-12 and PA-12S Description of the Type Design Change: Removal of Lycoming 0-235-C1 engine and installation of Lycoming 0-320-A1A, or one of the following optional Lycoming engines: 0-320-A1B, 0-320-A2A, 0-320-A2B, 0-320-A2C, 0- 0320-A2D, 0-320-C1A, 0-320-C1B, 0-320-C2A,0-320-C2B, 0-320-C2C, in accordance with Kenmore Air Harbor, Inc., Drawing No. KAH-100, Revision 2, dated February 4, 1998, or later FAA-approved revisions. Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate and the Approved Airplane Flight Manual Supplement dated February 24, 1998, must be maintained as part of the permanent records for the modified aircraft. 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 24, 1958 Date reissued: March 11, 1976; April 5, 2019 Date of issuance: April 17, 1958 Date amended: April 2, 1959; February 24, 1998 FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator (Signature) Acting Manager, Seattle ACO Branch (Title) Transfer the ownership of Supplemental Type Certificate Number to (Name of Transferee) (Address of Transferee) (Number and Street) (City, State, and ZIP Code) from (Name of Grantor) (Print or Type) (Address of Grantor) (Number and Street) (City, State, and ZIP Code) Signature of Grantor (In Ink): U.S. GPO: 1987-763-289 ## Every issue (3) - April 5, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/92/b2/92b2cf0680369be8028f8d05c1ebd73233091596e1d46cfa13e6c137af56b8ae) - February 24, 1998: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/07/87/0787d4374036365b6fe605fefcaa4d29aebd26e9c3290675a20adac2da2a92fc) - April 2, 1959: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/94/ab/94ab68d64595e8e2c67f32a38612db5d901e72a097339323f2f18e297058a18e) --- 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.