# STC SA5121SW-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 60 two axis automatic flight guidance system model ST-098 with optional automatic electric trim system. - Applied: November 19, 1982 - Status date: September 18, 1990 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS A3SO](https://openairdocs.org/tcds/A3SO) - Certificate PDF: https://openairdocs.org/files/sha256/03/7a/037a1884f79652f9894500ff72781cdbc6cf72e300d26dac2b27a1848bcaeec1 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DECA5BC4E0D122DE85256CC2001226C4.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA5121SW-D ## ADs that name it (0) None. ## Approved models (5) - Piper Aircraft Inc. PA-32-301 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO)) - Piper Aircraft Inc. PA-32-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO)) - Piper Aircraft Inc. PA-32R-301 (HP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO)) - Piper Aircraft Inc. PA-32R-301 (SP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO)) - Piper Aircraft Inc. PA-32R-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO)) ## 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. Vasd Bepartment ofTCransportation—jfetoal atriation SldminiBtradon Supplemental 'Cgpc Certificate SA5121SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 litaAcn^jtru/jetrneU/ufnA. 3 ^"^5, Civil Air A3 SO PIPER PA-32-301, PA-32-301T, PA-32R-301, AND PA-32R-301T Installation of S-tC System 60 Two Axis Automatic Flight Guidance System, Model ST-098 with Optional Automatic Electric Trim System according to Bulletin No. 201, Revision 3, dated 9-04-90 and Master Drawing List No. 92158, Revision C, dated 9-04-90 with Optional Flight Director Steering Horizon and/or later FAA Approved revisions of the above data (14 Volt System). 1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89174, dated 11-29-82 is required for Piper Models PA-32R-301 and PA-32R-301T and/or later FAA Approved revisions of the above supplement. (See Continuation Sheet, Page 2, a part of this STC). J&i*mt^JiA^ 11-19-82 9L&,*~u~~t: 6-05-84, 8-10-84, 9-18-90, Revision 3 11-29-82 QL&^ ___ (Signature) Harold W. Holdeman DAS Staff Coordinator, DAS 5 SW (Title) fine of not exceeding tl ,000, or imprisonment not exceeding 3 yean, or both. il errtijieate may be Irani/erred in oenrjanu urith FAR 21.17. ttnittd Starts of 3mtnra Bcpartmtnt of transportation— Jfcdtral atJiation administration 3uppltmtntal t^pe Certificate(Continuation £hect) t./VM/mweW SA5121SW-D, Revision 3 Limitations and Conditions (con't.) 2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89174-1, dated 9-18-90 is required for Piper Models PA-32R-301 and PA-32R-301T and/or later FAA Approved revisions of the above supplement. 3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89476, dated 6-05-84 is required for Piper Models PA-32-301 and PA-32-301T and/or later FAA Approved revisions of the above supplement. 4. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89476-1, dated 9-18-90 is required for Piper Models PA-32-301 and PA-32-301T and/or later FAA Approved revisions of the above supplement. 5. Compatibility of this modification with other previously approved modifications must be determined by the installer. .•In) alteration of this certificate is punishable by a fine of not exceeding, Sl,000, or imprisonment not exceeding 3 years, or bmh. FAA FORM 8HO-Z-I (t»-89) Thit {irttfcatt may bi IrantferreJ in accordant! with /".•!/< .'/.•/" PAGE 2 OF 2 PAGES TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ^IP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and Z.1P code) Extent of Authority (if licensing agreement): Signature of grantor (In ink): ## Every issue (1) - September 18, 1990: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/03/7a/037a1884f79652f9894500ff72781cdbc6cf72e300d26dac2b27a1848bcaeec1) --- 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.