# STC SA02553AT - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Alpha Aviation Inc, United States - Description: Front seat shoulder harness/lap belt assembly installation. - Applied: March 7, 1997 - Status date: May 23, 2018 - Product: Aircraft, Single-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A-780](https://openairdocs.org/tcds/A-780) - Certificate PDF: https://openairdocs.org/files/sha256/48/29/4829fa0ad8cfa1c3e8773c07f948e998dbb4b0632f4d89c8952c97eb9fd6ef44 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9CB62BD95F961B538625829F00447AA7.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA02553AT ## ADs that name it (0) None. ## Approved models (3) - The New Piper Aircraft Inc. PA-12 ([TCDS A-780](https://openairdocs.org/tcds/A-780)) - The New Piper Aircraft Inc. PA-12 Series ([TCDS A-780](https://openairdocs.org/tcds/A-780)) - The New Piper Aircraft Inc. 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. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder. FAA Form 8110-2 (5/14) Page 1 of 3 Number: SA02553AT This certificate issued to: Alpha Aviation Inc. 1500 E. Main Street Owatonna, MN 55060-3188 Part 25of the Federal Aviation Regulations. Original Product – Type Certificate Number: A-780 Make: Piper Model: PA-12, PA-12S Series Description of Type Design: Front seat shoulder harness/lap belt assembly installation in accordance with Aviation Justair, Inc. Assembly Drawing 96026 Rev C 2-27-97 "PA-12 Shoulder Harness Installation" and Kosola & Associates DCN96026 Dated 4-11-2002. At installation and annual inspections thereafter: Verify fastener installation(s) in accordance with AC 43.13 (latest revision) pre -load torque requirements. Visually inspect and replace any worn or frayed harnesses, lap straps, or belt hardware. Visually inspect and repair any fuselage tube having excessive wear or corrosion loss at zones of clamp block attachment. Report any movement of clamp block attachment which initiates wear and or corrosion loss on the fuselage structure to: Office Manager, Atlanta Aircraft Certification Office, 1701 Columbia Ave, College Park, Georgia 30337. Every Five Years: Remove the clamp block assembly and inspect the block and fuselage frame areas for adequate zinc chromate protection to prevent material loss in frame attachment zones. Repair the frame tube or replace the clamp block if material loss exceeds 0.01inch (0.25 mm frame) and 0.04 inch (1 mm clamp block) thickness respectively from the original design. Date of Application: March 07, 1997 Date Reissued: May 23, 2018 Date of Issuance: September 23, 2002 Date Amended: Signature Title Christina M. Underwood Manager, Atlanta ACO Branch Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder. FAA Form 8110-2 (5/14) Page 2 of 2 Transfer the ownership of Supplemental Type Certificate Number: SA02553AT To (Name and address of transferee) From (Name and address of grantor) ## Every issue (1) - May 23, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/48/29/4829fa0ad8cfa1c3e8773c07f948e998dbb4b0632f4d89c8952c97eb9fd6ef44) --- 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.