# STC SA01420SE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Cascade Flying Service LLC, United States - Description: Install a Walter M601-E11 or M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Aircraft Conversions Master Drawing List FW-CAC090-90 Revision B, dated August 10, 2004, and Cascade Aircraft Conversions Document FW-CAC090-12, Revision IR, dated June 2, 2004, Installation Manual for Thrush Aircraft S2R Series, Walter Turbine Installation or later FAA approved revisions to either of these documents. - Applied: March 9, 2001 - Status date: March 23, 2018 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS A4SW](https://openairdocs.org/tcds/A4SW) - Certificate PDF: https://openairdocs.org/files/sha256/a5/9c/a59c1ff3c6ca35a9e7b97f3c625af870a43f01fe0e357d1fd93b312480328cc0 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/13B5069DCD2C2F3686258260004CB3E3.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA01420SE ## ADs that name it (0) None. ## Approved models (4) - Thrush Aircraft Inc. S-2R ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-R1340 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-R1820 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-R3S ([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 SA01420SE This certificate, issued to Cascade Aircraft Conversions, LLC 903 Grinnell Road Garfield, WA 99130 Part 8 of the Civil Aviation Regulations. Original ProductType Certificate Number: A4SW Make: Thrush Model: S-2R, S2R-R3S, -R1340, -R1820 Description of the Type Design Change: Install a Walter M601-E11 or M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Aircraft Conversions Master Drawing List FW-CAC090-90 Revision G, dated October 19, 2008, and Cascade Aircraft Conversions Document FW -CAC090-12, Revision IR, dated June 2, 2004, Installation Manual for Thrush Aircraft S2R Series, Walter Turbine Installation or later FAA approved revisions to either of these documents. Limitations and Conditions: Additionally, approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model o n 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 aircraft. The modified aircraft must be maintained in accordance with Cascade Aircraft Conversions Document FW - CAC090-13, Revision IR, dated June 3, 2004. A copy of this Certificate, dated August 16, 2004, and the Aircraft Flight Manual Supplement FW-CAC090-11-E, Revision IR, dated June 8, 2004 for the M601-E11 engine installation, or FW-CAC090-11-D dated August 16, 2004 for the M601-D11 engine installation or later FAA approved revisions to any of these documents, must be maintained as part of the permanent records of the modified aircraft. See page 3 for limitations. Date of application: March 9, 2001 Date reissued: March 23, 2018 Date of issuance: June 8, 2004 Date amended: 8/20/04; 10/15/04; 1/14/09 (Signature) Manager, Seattle ACO Branch (Title) Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA01420SE Cascade Aircraft Conversions, LLC Issued: June 8, 2004 Reissued: March 23, 2018 Amended: 8/20/04; 10/15/04; 1/14/09 **1. ENGINES** a) NUMBER OF ENGINES 1 b) ENGINE MANUFACTURER WALTER c) ENGINE MODEL NUMBER M601-E11 d) OPERATING LIMITS Power Setting SHP Torque ft-lb Max. ITT°C Gas Speed Ng RPM Prop Speed Np RPM Oil Pressure psig (MPa) Oil Temp °F (°C) Take-off 751 1895 100% 735 36660 100% 2080 26.1–39.1 (.18 to .27) +20–+85 (-6 to +29) Max Cont. 657 1895 100% 690 35560 97% 1950 26.1-39.1 (.18 to .27) +20-+85 (-6 to +29) e) POWERPLANT INSTRUMENT MARKINGS INSTRUMENT Redline Minimum Green Arc Normal Yellow Arc Caution Redline Maximum Torque N/A 0-100 100-106 106 Tach RPM Ng 60 60-97 97-100 100 Tach RPM Np N/A 800-2080 N/A 2080 Temp ITT (°C) N/A 430-690 690-735 735 Oil Press (MPa) .12 .18-.27* .12-.18 & .27-.35** .35 Oil Temp (°C) N/A 20-95 -20-+20 95 Fuel Press Eng (kPa) N/A 0-120 N/A 120 Fuel Press Filter (psig) 2 N/A N/A N/A *Earlier versions were marked from .18 -.25 MPa. This revised marking is acceptable for the earlier versions. ** Earlier versions were marked .12-.28 and .25-.35 MPa. This revised marking is acceptable for the earlier versions. f) NUMBER OF ENGINES 1 g) ENGINE MANUFACTURER WALTER h) ENGINE MODEL NUMBER M601-D11 i) OPERATING LIMITS FAA FORM 8110-2-1 (10-69) PAGE 3 OF 4 PAGES Power Setting SHP Torque ft-lb Max. ITT°C Gas Speed Ng RPM Prop Speed Np RPM Oil Pressure psig (MPa) Oil Temp °F (°C) Take-off 604 1630 86% 735 36660 100% 1950 26.1 to 39.1 (.18 to .27) +20 to +85 (-6 to +29) Max Cont. 604 1630 86% 690 36110 98.5% 1950 26.1 to 39.1 (.18 to .27) +20 to +85 (-6 to +29) Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA01420SE Cascade Aircraft Conversions, LLC Issued: June 8, 2004 Reissued: March 23, 2018 Amended: 8/20/04; 10/15/04; 1/14/09 j) POWERPLANT INSTRUMENT MARKINGS: INSTRUMENT Redline Minimum Green Arc Normal Yellow Arc Caution Redline Maximum Torque N/A 0-86 - 86 Tach RPM Ng 60 60 - 98.5 98.5 - 100 100 Tach RPM Np N/A 800-2080 N/A 2080 Temp ITT (°C) N/A 430-690 690-735 735 Oil Press (MPa) .12 .18-.27 .12 - .18 & .27 - .35 .35 Oil Temp (°C) N/A 20-95 -20 - +20 95 Fuel Press Eng (kPa) N/A 0-120 N/A 120 Fuel Press Filter (psig) 2 N/A N/A N/A 2. PROPELLERS: (a) Number of propellers 1 (b) Propeller Manufacturer Avia Propellers (c) Blade Model 106/A (d) Number of Blades 3 (e) Hub Model V508E-AG (f)Propeller Type Hydraulically Operated, Constant Speed Full Feathering, Reversable. (g) Diameter Maximum 106 inches, no cutoff allowed - END - **FAA FORM 8110-2-1 (10-69) PAGE 4 OF 4 PAGES** ## Every issue (4) - March 23, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a5/9c/a59c1ff3c6ca35a9e7b97f3c625af870a43f01fe0e357d1fd93b312480328cc0) - January 14, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/3f/e6/3fe68ee12552a7277b0fff6cef417d052f365fee0e0f56c18face48c4f9ccfea) - October 15, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/c4/3c/c43c4b0db84c40dffa280cff3730ce9c0056d0389152b1f109f26f2c959d2a31) - August 16, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/69/32/693233be771abef8669b0177bedb8a4c97b6bf97efecc372e8b866c4ab597669) --- 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.