# STC SE00252SE - Type: Supplemental type certificate - Status: Current, Issued - Holder: Ly-Con Rebuilding Company, United States - Description: Modification for a 160 hp rating on 100/100LL minimum grade fuel. - Applied: June 19, 1995 - Status date: November 27, 1995 - Product: Engine - Certification basis: Part 21 - Data sheets: [TCDS E-274](https://openairdocs.org/tcds/E-274) - Certificate PDF: https://openairdocs.org/files/sha256/8d/b1/8db1847afedc8005d5b227a0b1b09e859d3aaacc577601f00ee988b70b60405b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3A5D6C94E0D27B1985256CC2005A73AA.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SE00252SE ## ADs that name it (0) None. ## Approved models (8) - Textron Lycoming AVCO Corporation O-320-A2B ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-A2D ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-E2A ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-E2B ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-E2C ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-E2D ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-E2G ([TCDS E-274](https://openairdocs.org/tcds/E-274)) - Textron Lycoming AVCO Corporation O-320-E3D ([TCDS E-274](https://openairdocs.org/tcds/E-274)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SE00252SE This certificate issued to: Ly-Con Rebuilding Co. 8231 Doe Avenue Visalia, CA 93291 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meet's the airworthiness requirement's of Part 13 of the Civil Air Regulations. Original Product -Type Certificate Number: E-274 Make: Lycoming Model: 0-320-A2B, 0-320-A2D, 0-320-E2A, 0-320-E2B, 0-320-E2C, 0-320-E2D, 0-320-E2G, 0-320-E3D Description of Type Design Change: Modification of the above model engines for a 160 horsepower rating on 100/100 LL minimum grade fuel in accordance with Ly-Con Data List dated March 17, 1977, or later FAA approved revision. Limitations and Conditions: Approval of this change in type design applies to the above model engines, only. This approval should not be extended to other engines of these models on which other previously approved modifications are incorporated unless it is determined that the relationship 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 engine. A copy of this Certificate and Continuation Sheet dated November 27, 1995, must be maintained as part of the permanent records for the modified engines. NOTE: Only Wide Cylinder Flange (WCF) engines are eligible for modification under this STC. (See Page 3 for additional limitations) Date of Application: June 19, 1995 Date Reissued: Date of Issuance: November 27, 1995 Date Amended: FEDERAL By direction of the I Celvis (Signature) TOMINIST RATION Acting Manager, Seattle Aircraft Certification Office (Title) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SE00252SE Limitations and Conditions: continued: Type Certificate Data Sheet No. E-274 applies to all engines modified under this STC except as noted below: Rating: Maximum continuous horse power and RPM at Sea Level pressure altitude and full throttle are 160 hp and 2700 RPM respectively. Takeoff horsepower and RPM at full throttle Sea Level pressure altitude are 160 hp and 2700 RPM respectively. Fuel: (Minimum grade aviation gasoline) 100/100LL Compresion Ratio: 8.5: 1 Weight Change: +2.3 pounds (CG location unchanged from unmodified engine) Spark plugs listed on T.C.D.S. E-274 that are approved for 160 H.P. (high compression) engines are required. - END - **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES** ## Every issue (1) - November 27, 1995: Issued, Current. [certificate](https://openairdocs.org/files/sha256/8d/b1/8db1847afedc8005d5b227a0b1b09e859d3aaacc577601f00ee988b70b60405b) --- 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.