# STC SE11141SC - Type: Supplemental type certificate - Status: Current, Issued - Holder: RT Turbines Inc, United States - Description: The conversion of the Pratt & Whitney Canada, Model PT6A-15AG to a PT6A-34AG turboprop engine - Applied: September 17, 2012 - Status date: July 22, 2013 - Product: Engine - Certification basis: Part 21, Part 33 - Data sheets: [TCDS E4EA](https://openairdocs.org/tcds/E4EA) - Certificate PDF: https://openairdocs.org/files/sha256/85/6f/856f42211453f5bac66e102fcded3b69b6fe585992e3b857f046844e8b853ce6 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9E87B55406E9191786257BB700476AD6.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SE11141SC ## ADs that name it (0) None. ## Approved models (1) - Pratt & Whitney Canada Corp. PT6A-15AG ([TCDS E4EA](https://openairdocs.org/tcds/E4EA)) ## 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 Project Number ST09685SC-E DJB N umber: SE11141SC 3397 Hwy 121 W. Marianna, AR 72360 Part 33 of the Federal Aviation R egulations. Original Product Type Certific ate N umber : E4EA M ake : Pratt & Whitney Canada M odel : PT6A-15AG Description of Type Design Change: The conversion of the Pratt & Whitney Canada, Model PT6A-15AG to a PT6A-34AG turboprop engine in accordance with R.T. Turbines “Technical Instruction #RTT-03-01” dated June 25, 2012, or later FAA approved version. The installation of second engine data plate R.T. Turbines, Inc., Drawing No. STC 004, “Supplemental Data Plate”, dated June 27, 2012, is also required. Limitations and Conditions : The installer must determine whether this design change is compatible with previously approved modifications. 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. The R.T. Turbines, Inc, “Instructions for Continued Airworthiness Manual”, dated September 10, 2012, or later FAA approved versions is required. The engine parts used for modification will be inspected and found to be airworthy in accordance with the Pratt & Whitney Canada, Overhaul Manual for the Model PT6A-15AG and PT6A-34AG engines. Conversion of a previously STC converted engine is not authorized. Date of application: September 17, 2012 Date reissued: Date of issuance: July 22, 2013 Date amended: B y direction of the A dministrator (Signature) S. Frances Cox Manager, Special Certification Office Southwest Region (Title) FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES 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): ## Every issue (1) - July 22, 2013: Issued, Current. [certificate](https://openairdocs.org/files/sha256/85/6f/856f42211453f5bac66e102fcded3b69b6fe585992e3b857f046844e8b853ce6) --- 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.