# STC SE3350NM - Type: Supplemental type certificate - Status: Current, Amended - Holder: American Aviation Inc, United States - Description: Installation of American Aviation intercooler and associated systems. - Applied: October 7, 1985 - Status date: November 1, 1998 - Product: Engine - Certification basis: Part 21 - Data sheets: [TCDS E10EA](https://openairdocs.org/tcds/E10EA) - Certificate PDF: https://openairdocs.org/files/sha256/78/a1/78a1ad5ca4184f0d28cef6167a88061f29875a8177d702f29b12844f8a73b5a0 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6035B3D6578E272485256CC2005A7525.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SE3350NM ## ADs that name it (0) None. ## Approved models (3) - Textron Lycoming AVCO Corporation TIO-541-E1A4 ([TCDS E10EA](https://openairdocs.org/tcds/E10EA)) - Textron Lycoming AVCO Corporation TIO-541-E1B4 ([TCDS E10EA](https://openairdocs.org/tcds/E10EA)) - Textron Lycoming AVCO Corporation TIO-541-E1C4 ([TCDS E10EA](https://openairdocs.org/tcds/E10EA)) ## 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: SE3350NM This certificate issued to: American Aviation, Inc. 10555 Airport Drive Coeur d'Alene Airport Hayden Lake, ID 83835 Certifies that the change in the type design for the following product with the limitations and conditions therefore as specified hereon meets the airworthiness requivements of Part 13 of the Civil Air Regulations. Make: Avco Lycoming Model: TIO-541-E1A4, -E1C4, E1B4 Description of Type Design Change: Installation of American Aviation, Inc., intercooler and associated systems in accordance with American Aviation, Inc., Report 88-1 and 88-10 or later FAA approved revisions. The engines modified in accordance with this document may only be installed in aircraft modified per STC Numbers SA3351NM and SA3660NM. Engine operating limits are specified in American Aviation, Inc., FAA Approved Airplane Flight Manual Supplement which is required by STC Number SA3660NM. 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 must be maintained as part of the permanent records for the modified engine. 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: October 7, 1985 Date Reissued: Date of Issuance: April 10, 1986 Date Amended: 12/02/86; 11/01/98 FEDERAL AVIATION arection of the l Cancano мит OMINIST FATION Acting Manager, Seattle Aircraft (Signature) Certification Office (Title) 47. ## Every issue (1) - November 1, 1998: Amended, Current. [certificate](https://openairdocs.org/files/sha256/78/a1/78a1ad5ca4184f0d28cef6167a88061f29875a8177d702f29b12844f8a73b5a0) --- 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.