# STC SA1201SW - Type: Supplemental type certificate - Status: Current, Amended - Holder: Noyes Enterprises, United States - Description: Lycoming O-540-A4B5 engine. - Applied: February 27, 1970 - Status date: November 15, 2011 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A14](https://openairdocs.org/tcds/3A14), [TCDS 5A5](https://openairdocs.org/tcds/5A5) - Certificate PDF: https://openairdocs.org/files/sha256/7c/87/7c87445ab0a3e4909233ccf457e1534369bea943237a3995454fbcd9f0b7da2e - Approved model list and other attachments: [SA1201SW AML.pdf](https://openairdocs.org/files/sha256/ff/b6/ffb646ce5186b2b50f5ab36544b79b8937e86c3da17e8d6d7dea10c29581a357) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9C68387DA36269EB8625796500756CDC.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1201SW ## ADs that name it (0) None. ## Approved models (6) - Regal Air Inc. 305A ([TCDS 5A5](https://openairdocs.org/tcds/5A5)) - Regal Air Inc. 305B ([TCDS 3A14](https://openairdocs.org/tcds/3A14)) - Regal Air Inc. 305C ([TCDS 5A5](https://openairdocs.org/tcds/5A5)) - Regal Air Inc. 305D ([TCDS 5A5](https://openairdocs.org/tcds/5A5)) - Regal Air Inc. 305E ([TCDS 3A14](https://openairdocs.org/tcds/3A14)) - Regal Air Inc. 305F ([TCDS 5A5](https://openairdocs.org/tcds/5A5)) ## 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. Part 3 of the Civil Air Regulations. Installation of Lycoming O-540-A4D5, O-540-A4B5, or O-540-A4E5 engine and Hartzell HC-C2YK-1/8477-2 or HC-C3YR- IRF/F8468A-6R propeller according to Installation Instructions dated January 14, 1971; revised Oil Cooler Scoop according to Drawing No. LYC5 dated 1/18/1977; engine mounts according to Drawing LYC.1A dated 1/7/1977; Master Drawing List Rev. None dated 1/7/2011 or later FAA approved revisions; increased gross weight for the Cessna 305A according to FAA approved Airplane Flight Manual Supplement dated June 28, 1977, revised February 28, 2011 or later FAA approved revision. 1. Compatibility of this design change with previously approved modifications must be determined by the installer. 2. If the holder agrees to permit anothe r person to use this certificate to alter the product, the holder shall give the othe r person written evidence of that permission. Noyes Enterprises 4924 Onondaga Rd Onondaga, MI 49264 See attached FAA Approved Model List (AML) for the list of approved airplane models, applicable installation data requirements and specific limitations. Make: Model: Date reissued : March 22, 2002; September 20, 2007; June 25, 2010 Date amended : December 16, 1971; October 17, 1974; February 20, 1975; August 31, 1977; December 13, 1979; November 18, 1980; March 13, 2008; January 10, 2011; May 16, 2011; November 15, 2011 By direction of the Administrator Original Signed By: Timothy Smyth ( Signature) Timothy Smyth Manager, Propulsion Branch Chicago Aircraft Certification Office ( Title) Date of application: February 27, 1970 Date of issuance : December 8, 1970 FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES Number SA1201SW Date of Issuance: December 8, 1970 Date Amended: November 15, 2011 3. STC SA281SW Gravity Fuel System and STC SA568SW Gross Weight Increase (applicable to Cessna 305A only) are compatible with this installation. 4. FAA approved Airplane Flight Manual Supplement dated July 28, 1977, revised July 7, 2010, or later FAA approved revision is required for O-540-A4D5 engine. 5. FAA approved Airplane Flight Manual Supplement dated January 13, 1975, revised July 7, 2010, or later FAA approved revision is required for O-540-A4B5 (213 HP) engine. 6. FAA approved Airplane Flight Manual Supplement dated July 28, 1977, revised July 7, 2010, or later FAA approved revision is required for O-540-A4B5 or –A4D5 (250 HP) engine. 7. Each Supplement contains additional limitations. 8. Alternate battery installation per Instructions dated September 10, 1971, revised July 7, 2010 or later FAA approved revision is also eligible with this modification. 9. FAA approved Airplane Flight Manual Supplement dated July 28, 1977, revised February 28, 2011 or later FAA approved revision is required for increasing the gross weight of the Cessna 305A to 2400 lbs. - END - ### SA1201SW AML.pdf 1 FAA APPROVED MODEL LIST (AML) STC No. SA1201SW INSTALLATION OF LYCOMING ENGINE, HARTZELL PROPELLER, OIL COOLER SCOOP AND ENGINE MOUNTS Issue Date: February 27, 1970, Revised January 10, 2011 Page 1 of 1 Installation Instructions Aircraft Make Aircraft Model Original Type Certificate Number Certification Basis For Alteration Number Revision And Date AML Amendment Date Regal Air, Inc. (Cessna) 305A, 305C, 305D, 305F 5A5 Civil Air Regulations Part 3-1 through 3-10 STC SA1201 Master Drawing List No Revision Dated January 7, 2011, or later FAA Approved Revision January 10, 2011 Regal Air, Inc. (Cessna) 305B, 305E 3A14 Civil Air Regulations Part 3-1 through 3-13 STC SA1201 Master Drawing List No Revision Dated January 7, 2011, or later FAA Approved Revision January 10, 2011 Original Signed By: John M. Tallarovic FAA Approved: _______________________ Michael Downs Acting Manager, Propulsion Branch Chicago Aircraft Certification Office ## Every issue (5) - November 15, 2011: Amended, Current. [certificate](https://openairdocs.org/files/sha256/7c/87/7c87445ab0a3e4909233ccf457e1534369bea943237a3995454fbcd9f0b7da2e), [SA1201SW AML.pdf](https://openairdocs.org/files/sha256/ff/b6/ffb646ce5186b2b50f5ab36544b79b8937e86c3da17e8d6d7dea10c29581a357) - May 16, 2011: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/80/84/8084b2c6b1c3b527fae4499c2ecc0053122dc8dfadde9d017b15f3c366af9940), [SA1201SW Amendment 5-16-11.pdf](https://openairdocs.org/files/sha256/a4/d4/a4d4da01a5e0873c56b597ed45eb1a75d85747b97eeb05743437a7c7987595cd) - January 10, 2011: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/80/84/8084b2c6b1c3b527fae4499c2ecc0053122dc8dfadde9d017b15f3c366af9940), [STC SA1201SW.pdf](https://openairdocs.org/files/sha256/06/5e/065ec49ae3bbfd3647d739660c9231666fb7094e5d8e9301c2d46d6733502bee) - June 25, 2010: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/d0/e6/d0e6a881a5933306642f6acc7e388c2dc3e80b4aff4e80f5554bdfd4be2a5040) - March 13, 2008: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/ca/09/ca0935668500b9764b243f26da7e71e84298ae5ee5082bbcf3fc82c51485477a) --- From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.