# STC SA01402SE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Cascade Flying Service LLC, United States - Description: Install modified engine cowl. - Applied: February 18, 2004 - Status date: March 23, 2018 - Product: Aircraft, Single-Engine - Certification basis: Part 21, Part 23 - Data sheets: [TCDS A4SW](https://openairdocs.org/tcds/A4SW) - Certificate PDF: https://openairdocs.org/files/sha256/e6/f6/e6f672db5df27b90afce189bcd4b3f5789a40689f86688b743525a02c11f5dd4 - Approved model list and other attachments: [SA01402SE_AML.pdf](https://openairdocs.org/files/sha256/ed/fb/edfb0b678fc5d73e41708d842ae06b06426ca798646da38c815f45d8451991d6) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B237B61D4BC2E76C86258260004CB3CE.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA01402SE ## ADs that name it (0) None. ## Approved models (8) - Thrush Aircraft Inc. S2R-T11 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T15 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T34 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T45 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T65 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T660 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2RHG-T34 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2RHG-T65 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) ## 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. Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SA01402SE This certificate, issued to Cascade Aircraft Conversions, LLC 903 Grinnell Road Garfield, WA 99130 Part 21.25 of the Federal Aviation Regulations. Original ProductType Certificate Number: ** See FAA Approved Model List (AML) Make: No. SA01402SE for list of approved airplane Model: models and applicable airworthiness regulations. Description of the Type Design Change: Install modified engine cowl per Cascade Aircraft Conversions LLC data given in AML SA01402SE for the specific model of airplane. Limitations and Conditions: The modified aircraft must be maintained in accordance with Cascade Aircraft Conversions LLC data given in AML SA01402SE for the specific model of airplane. Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of these models on which other previously approved modifi cations 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 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: February 18, 2004 Date reissued: March 23, 2018 Date of issuance: April 30, 2004 Date amended: 10/27/04; 5/9/07 (Signature) Manager, Seattle ACO Branch (Title) ### SA01402SE_AML.pdf **FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SA01402SE FOR** INSTALLATION OF PRESSURIZED COWL ISSUE DATE: May 9, 2007 Page 1 of 2 **ITEM AIRCRAFT MAKE** **AIRCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICATION** **BASIS FOR** **ALTERATION** **FAA APPROVED** **MAINTENANCE MANUAL** **FAA APPROVED INSTALLATION** **INSTRUCTIONS** FAA APPROVED MASTER DRAWING LIST AML REV DATE Number Revision* Number Revision* Drawing Revision* 1. Thrush Aircraft Inc. S2R-T34 A4SW CAR 8 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 CAC-MDL-PT-THRUSH Revision D, dated March 2, 2007 2. Thrush Aircraft Inc. S2R-T15 A4SW CAR 8 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 CAC-MDL-PT-THRUSH Revision D, dated March 2, 2007 3. Thrush Aircraft Inc. S2R-T11 A4SW CAR 8 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 CAC-MDL-PT-THRUSH Revision D, dated March 2, 2007 4. Thrush Aircraft Inc. S2RHG-T34 A4SW FAR 21.25 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 CAC-MDL-PT-THRUSH Revision D, dated March 2, 2007 5. Thrush Aircraft Inc. S2R-T65 A4SW CAR 8 FAR 23 Amendment 23-16 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 FW-CFS417-90 Revision IR, dated April 24, 2004 6. Thrush Aircraft Inc. S2RHG-T65 A4SW FAR 21.25 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 FW-CFS417-90 Revision IR, dated April 24, 2004 7. Thrush Aircraft Inc. S2R-T660 A4SW FAR 21.25 FW-CAC331-13 Revision IR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 FW-CFS417-90 Revision IR, dated April 24, 2004 8. Thrush Aircraft Inc. S2R-T45 A4SW FAR 21.25 FAR 23 Amendment 23-14 FW-CAC331-13 RevisionIR, dated April 4, 2004 FW-CAC331-12 Revision IR, dated April 24, 2004 CAC-MDL-PT-THRUSH Revision D, dated March 2, 2007 9. Thrush Aircraft Inc. S2R-T34 (see Note 1) A4SW CAR 8 FW-CAC331-13 Revision A, dated March 25, 2015 CAC-IM-126 Revision IR, dated April 1, 2015 CAC-MDL-BM-THRUSH Revision IR, dated February 12, 2015 4/10/15 10. Thrush Aircraft Inc. S2R-T15 A4SW CAR 8 FW-CAC331-13 Revision A, dated March 25, 2015 CAC-IM-126 Revision IR, dated April 1, 2015 CAC-MDL-BM-THRUSH Revision IR, dated February 12, 2015 4/10/15 **FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SA01402SE FOR** INSTALLATION OF PRESSURIZED COWL ISSUE DATE: May 9, 2007 Page 2 of 2 **ITEM AIRCRAFT MAKE** **AIRCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICATION** **BASIS FOR** **ALTERATION** **FAA APPROVED** **MAINTENANCE MANUAL** **FAA APPROVED INSTALLATION** **INSTRUCTIONS** FAA APPROVED MASTER DRAWING LIST AML REV DATE Number Revision* Number Revision* Drawing Revision* 11. Thrush Aircraft Inc. S2R-T11 A4SW CAR 8 FW-CAC331-13 Revision A, dated March 25, 2015 CAC-IM-126 Revision IR, dated April 1, 2015 CAC-MDL-BM-THRUSH Revision IR, dated February 12, 2015 4/10/15 * Or later FAA Approved Revision NOTE1: S2R-T34 Model equipped with PT6A-34AG or PT6A-34 engine is eligible for modification in accordance with Master Drawing List CAC-MDL-BM-THRUSH. (Other S2R-T34 engine combinations on TCDS A4SW are not eligible for modification) FAA Approved: Manager, Seattle Aircraft Certification Office AMENDED: 10/29/82; 5/15/90; 7/17/02; 1/13/04; 9/25/09; 10/22/10; 4/10/15 REISSUED: March 23, 2018 ## Every issue (5) - March 23, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e6/f6/e6f672db5df27b90afce189bcd4b3f5789a40689f86688b743525a02c11f5dd4), [SA01402SE_AML.pdf](https://openairdocs.org/files/sha256/ed/fb/edfb0b678fc5d73e41708d842ae06b06426ca798646da38c815f45d8451991d6) - April 10, 2015: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/28/e4/28e4fdc5d393c451646dc6f23819499d15d15e5d2a2b8e0750e2310880875e2b), [SA01402SE_AML.pdf](https://openairdocs.org/files/sha256/85/9b/859b606b45f8f642f123e95f5b887f0ddb0a456d9ada82f0463a1bd3e17e197e) - October 22, 2010: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/28/e4/28e4fdc5d393c451646dc6f23819499d15d15e5d2a2b8e0750e2310880875e2b), [AML SA01402SE.pdf](https://openairdocs.org/files/sha256/d5/44/d5447747a97a431644b63105e9365346dad0df2c0affcb1b8907541327f33dc4) - May 9, 2007: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/0f/c2/0fc208acab833ee04946e5adcdbe9641e61141ef5b0e1abfbe88b24845ea0f32), [SA01402SE_AML.pdf](https://openairdocs.org/files/sha256/86/58/86585bf8c76cbf53a67fddba926130db951d81b38852b78d44603c16deb54bb6) - April 30, 2004: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/45/7b/457b244a137a3284dfd8e962c307a64a758f5a7eb45834df1b671168089071fd) --- 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.