# STC SA10921SC - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Hartzell Engine Technologies, LLC, United States - Description: Installation of an alternator and regulator as a replacement to existing OEM generators and mechanical voltage regulators - Applied: December 4, 2007 - Status date: July 17, 2014 - Product: Aircraft, Small Airplane - Certification basis: Part 1, Part 21 - Data sheets: [TCDS A-791](https://openairdocs.org/tcds/A-791), [TCDS A11IN](https://openairdocs.org/tcds/A11IN), [TCDS A-758](https://openairdocs.org/tcds/A-758), [TCDS A-792](https://openairdocs.org/tcds/A-792), [TCDS A3CE](https://openairdocs.org/tcds/A3CE), [TCDS A-759](https://openairdocs.org/tcds/A-759), [TCDS A14IN](https://openairdocs.org/tcds/A14IN), [TCDS A10IN](https://openairdocs.org/tcds/A10IN), [TCDS A4IN](https://openairdocs.org/tcds/A4IN), [TCDS A-777](https://openairdocs.org/tcds/A-777), [TCDS 5A3](https://openairdocs.org/tcds/5A3), [TCDS A-768](https://openairdocs.org/tcds/A-768), [TCDS 5A2](https://openairdocs.org/tcds/5A2), [TCDS 3A19](https://openairdocs.org/tcds/3A19), [TCDS A-799](https://openairdocs.org/tcds/A-799), [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS 3A17](https://openairdocs.org/tcds/3A17), [TCDS A-729](https://openairdocs.org/tcds/A-729), [TCDS A-725](https://openairdocs.org/tcds/A-725), [TCDS A-694](https://openairdocs.org/tcds/A-694) and 23 more - Certificate PDF: https://openairdocs.org/files/sha256/21/b5/21b5af402ad4f328106e18a1510a3b226396f929832e34fe096e56ac43ee7d86 - Approved model list and other attachments: [SA10921SC_AML.pdf](https://openairdocs.org/files/sha256/3d/0b/3d0b27f93f91185279dbaf30845da2c7c040fb329d51f0d8a69f8a688c825be4) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F64728D12A34301D86257DCC00568048.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA10921SC ## ADs that name it (0) None. ## Approved models (116, first 50) - AD Holdings Inc T-211 ([TCDS A-791](https://openairdocs.org/tcds/A-791)) - Aerodifusion S.L. D-1190S ([TCDS A11IN](https://openairdocs.org/tcds/A11IN)) - Aircraft Parts & Development Corp. A-3 ([TCDS A-758](https://openairdocs.org/tcds/A-758)) - All American Aircraft Inc. 10A ([TCDS A-792](https://openairdocs.org/tcds/A-792)) - American Champion Aircraft Corp. 402 ([TCDS A3CE](https://openairdocs.org/tcds/A3CE)) - American Champion Aircraft Corp. 7EC ([TCDS A-759](https://openairdocs.org/tcds/A-759)) - American Champion Aircraft Corp. 7ECA ([TCDS A-759](https://openairdocs.org/tcds/A-759)) - American Champion Aircraft Corp. 7FC ([TCDS A-759](https://openairdocs.org/tcds/A-759)) - American Champion Aircraft Corp. 7JC ([TCDS A-759](https://openairdocs.org/tcds/A-759)) - American Champion Aircraft Corp. S7EC ([TCDS A-759](https://openairdocs.org/tcds/A-759)) - Avions Jodel 150 ([TCDS A14IN](https://openairdocs.org/tcds/A14IN)) - Avions Jodel D-1190 ([TCDS A10IN](https://openairdocs.org/tcds/A10IN)) - Avions Jodel DR-1050 ([TCDS A4IN](https://openairdocs.org/tcds/A4IN)) - Beechcraft Corporation 35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation 35R ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation 45 (Military YT-34) ([TCDS 5A3](https://openairdocs.org/tcds/5A3)) - Beechcraft Corporation A35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation B35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation C35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation D35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation E35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation F35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Beechcraft Corporation G35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Cessna Aircraft Company 120 ([TCDS A-768](https://openairdocs.org/tcds/A-768)) - Cessna Aircraft Company 140 ([TCDS A-768](https://openairdocs.org/tcds/A-768)) - Cessna Aircraft Company 140A ([TCDS 5A2](https://openairdocs.org/tcds/5A2)) - Cessna Aircraft Company 150 ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150A ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150B ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150C ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150D ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150E ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150F ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150G ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150H ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150J ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150K ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150L ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 150M ([TCDS 3A19](https://openairdocs.org/tcds/3A19)) - Cessna Aircraft Company 170 ([TCDS A-799](https://openairdocs.org/tcds/A-799)) - Cessna Aircraft Company 170A ([TCDS A-799](https://openairdocs.org/tcds/A-799)) - Cessna Aircraft Company 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799)) - Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Cessna Aircraft Company 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) All 116: https://openairdocs.org/stc/SA10921SC/models.md ## 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 * of the * Regulations. * Installation of an alternator and regulator as a replacement to existing OEM generators and mechanical voltage regulators in accordance with Master Drawing List 11-0000, Revision A, dated October 14, 2008, or later FAA approved revision. Airplane Flight Manual Supplement AFMS-003, Revision IR, dated November 10, 2008, or later FAA approved revision is required. 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 a product, the holder must give the other person written evi dence of that permission. Hartzell Engine Technologies LLC 2900 Selma Highway Montgomery, AL 36108 * See attached FAA Approved Model List (AML) for list of approved models and applicable airworthiness regulations. Date of application : December 04, 2007 Date of issuance : November 10, 2008 Date reissued : July 17, 2014; January 25, 2016 Date amended : December 18, 2008 (Signature) Christopher Richards Acting Manager, Propulsion & Program Management Branch Chicago Aircraft Certification Office (Title) FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES Number SA10921SC Certification Basis (Continued): The Certification Basis for this installation is per Approved Model List plus the following: Regulations that meet amendment 23-55 23.901(a); 23.1041; 23.1163; 23.1301(a)(b)(c)(d); 23.1309(a)(b)(c); 23.1331(b); 23.1351(a)(b)(c); 23.1359(c); 23.1365(d); 23.1431(b); 23.1529; 23.1581(a)(b); 23.603(a) Regulations that meet amendment 33-20 33.15; 33.17; 33.19; 33.25 -END- ### SA10921SC_AML.pdf Page 1 of 3 Last Revised: July 14, 2014 **FAA APPROVED MODEL LIST (AML)** SA10921SC Hartzell Engine Technologies LLC 2900 Selma Highway Montgomery, AL 36108 Date of issuance: November 10, 2008 Revised: December 18, 2008 (AML); July 17, 2009 (AML); February 10, 2011, October 25, 2011 (AML), July 17, 2014 Item Aircraft Manufacturer Group 1 Aircraft Model Original Type Certificate Number Regulation/Part 1 AD Aerospace Inc. T-211 A-791 CAR 3 2 Aircraft Parts & Development Corp. A-3 A-758 CAR 4a 3 Aerodifusion, S.L. D-1190S A11IN CAR 3 4 American Champion Aircraft Corp. 7EC; 7ECA; 7FC; 7JC; S7EC A-759 CAR 4a CAR 8 “ 402 A3CE FAR 23 CAR 3 5 Burl A. Rogers 15AC, S15AC A-802 CAR 3 6 Hawker Beechcraft Corporation 45 (YT-34) 5A3 CAR 3 “ 35; A35; B35; 35R; G35; (C35; D35; E35; F35; Equipped with E225-8 Engine) A-777 CAR 3 7 All American Aircraft, Inc. 10A A-792 CAR 3 8 Cessna Aircraft Company 150, 150A, 150B; 150C; 150D; 150E; 150F; 150G; 150H; 150J; 150K; A150K; 150L; A150L; 150M; A150M 3A19 FAR 23 “ 140A 5A2 CAR 3 CAR 4a “ 120; 140 A-768 CAR 4a “ 170; 170A; 170B A-799 CAR 3 “ 172; 172A; 172B; 172C; 172D; 172E; 172F;’ 172G; 172H 3A12 CAR 3 FAR 23 9 Commonwealth Aircraft, Inc. 185 A-729 CAR 4a 10 Edward Scott Kearns Trojan A-2 A-801 CAR 3 11 FS 2001 Corp. J5A (Army L-4F), Equipped with C75-12 Engine A-725 CAR 4a 12 Swift Museum Foundation, Inc. GC-1A; GC-1B A-766 CAR 4a 13 Goodyear Aircraft Corporation GA-22A 1A12 CAR 3 14 Helio Aircraft Corporation 15A, Equipped with C145-2 Engine 3A3 CAR 4a 15 Avion Jodel D-1190 A10IN CAR 10 CAR 3 Page 2 of 3 Last Revised: July 14, 2014 Avions Jodel 150 A14IN CAR 10 CAR 3 Avions Jodel DR-1050 A4IN CAR 10 CAR 3 16 The Don Luscombe Aviation History Foundation, Inc. 8E; 8F; T-8F A-694 CAR 4a 18 MICCO Aircraft Company, Inc. MAC-125C; MAC-145 3A1 FAR 23 19 Sierra Hotel Aero, Inc. Navion (Army L- 17A); Navion A (Army L-17B & L- 17C) A-782 CAR 3 20 Piper Aircraft, Inc. J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)); J3C-65S, Equipped with C75-12 A-691 CAR 4a “ J4A, Equipped with C85-12 Engine A-703 CAR 4a “ J4E (Army L-4E), Equipped with C75-12 Engine A-740 CAR 4a “ PA-18; PA-19; (PA-18S; PA-19S Equipped with C90-12F Engine) 1A2 CAR 3 21 Quartz Mountain Aerospace, Inc. 11A A-804 CAR 3 22 S.O.C.A.T.A. – Group AEROSPATIALE Rallye MS880B; MS885; 100S 7A14 CAR 10 CAR 3 23 Superior Aircraft Company Culver V; V2 A-778 CAR 3 24 Taylorcraft 2000, LLC 19 1A9 CAR 3 FAR 23 “ BC12D-4-85; BCS12D-4-85 A-696 CAR 4 25 Thomas H. McClish B85C A-715 CAR 4a 26 Univair Aircraft Corporation 415-C; 415-CD; Equipped with C75-12; C75-12F; C85-12; or C85- 12F Engine A-718 CAR 4a “ 415-D; E; G; F-1; F-1A; A-2; A2-A; **M10 A-787 CAR 3** Item Aircraft Manufacturer Group 2 Aircraft Model Original Type Certificate Number Regulation/Part 1 Cessna Aircraft Company R172F, R172G, R172H 3A17 CAR 3 FAR 23 2 MAULE AEROSPACE TECHNOLOGY, INC. Bee Dee M-4; M- 4; M-4C; M-4S; M-4T 3A23 CAR 3 “ M-4-210, M-4- 210C, M-4-210S, M-4-210T 2A23 CAR 3 Page 3 of 3 Last Revised: July 14, 2014 “ M-5-210C CAR 36 3 Mooney Aircraft Company, Inc. M20K 2A3 CAR 3, FAR 23, FAR 36 4 Piper Aircraft, Inc. PA-28-201T, PA- 28R-201T, PA- 28RT-201T 2A13 CAR 3 FAR 23 FAR 23 “ PA-34-200T, PA- 34-220T A7SO FAR 23 FAA Approved:______________________________ Scott A. Horn Manager, Aircraft Certification Office Southwest Region ## Every issue (2) - July 17, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/21/b5/21b5af402ad4f328106e18a1510a3b226396f929832e34fe096e56ac43ee7d86), [SA10921SC_AML.pdf](https://openairdocs.org/files/sha256/3d/0b/3d0b27f93f91185279dbaf30845da2c7c040fb329d51f0d8a69f8a688c825be4) - November 10, 2008: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/12/96/1296e19e7246667de6bd2d837317b483c98e8d776ba40046704752811e72472d), [SA10921SC AML.pdf](https://openairdocs.org/files/sha256/ec/4a/ec4a3c727fbd3c85962c3038aba499454b771ef8b3aab06f0898fa20ae3538c6) --- 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.