# STC SA5170SW-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC yaw damper system ST-135 - Applied: June 13, 1983 - Status date: May 21, 1993 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS A-777](https://openairdocs.org/tcds/A-777) - Certificate PDF: https://openairdocs.org/files/sha256/c4/ec/c4eceea3ae85bdc8bb5542b7f36003a20dd6d6ff793439610f7f67cc246c6518 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B44BB22DA3DF2B0C85256CC200122735.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA5170SW-D ## ADs that name it (0) None. ## Approved models (7) - Beechcraft Corporation 35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - 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 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)) ## 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. •Boat SSaa Beparnnent of transportation— federal Station administration Supplemental l^pe Certificate SA5170SW-D S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 3 Civil Air A-777 Beech 35, A35, B35, C35, D35, E35, F35, and G35 Installation of S-TEC Yaw Damper System, Model ST-135 according to Bulletin No. 235, Revision 4, dated 4-23-93 and Master Drawing List No. 92191, Revision D, dated 4-23-93 or later FAA Approved revisions of the above data (14 Volt System). 1 Also eligible on Model 35 When Modified Per STC SA1-460 (Auxiliary Wing Tip Fuel Tanks) . 2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89217, dated 6-21-83 is required for Beech Models C35, D35, E35, F35, and G35 or later FAA Approved revisions of the above supplement. (See Continuation Sheet, Page 2, a part of this STC.) - litc~&~~: 6-13-83 6-21-83 1-13-87, 9-24-90, 5-21-93 Revision 3 William J. ThomasDAS Staff Coordinator, DAS 5 SW(Tntt) 17. ttraod Scans of 3ntnn Bqiartmcnt of Transportation— Jfedtral Station administration Supplemental lEgpe Certificate(Continuation SA5170SW-D, Revision 3 Limitations and Conditions (con't.) 3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89217-1, dated 1-13-87 is required for Beech Models C35, D35, E35, F35, and G35 or later FAA Approved revisions of the above supplement. 4. FAA Approved Supplemental Flight Manual, P/N 89896, dated 9-24-90 is required for Beech Model 35 And The Above Model When Modified Per STC SA1-460 (Auxiliary Wing Tip Fuel Tanks) or later FAA Approved revisions of the above supplement. 5. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 891028, dated 5-21-93 is required for Beech Models A35 and B35 or later FAA Approved revisions of the above supplement. 6. Compatibility of this modification with other previously approved modifications must be determined by the installer. .Im .ntfriitiun tit this certificate is punishable by a fin* of not exceeding 11,000, or imprisonment not exceeding 3 vears, or hm FAA FORM ai i*2.1 (1O.69) Thii ctfttpcatt may bt trantfartd in accordant! with 1~.\R ^ 1 .J 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