# STC SA09369AC-D - Type: Supplemental type certificate - Status: Current, Issued - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 20/30 single and two-axis automatic flight guidance systems, Model ST-822-20/30. - Applied: June 17, 1998 - Status date: June 19, 1998 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS A16EA](https://openairdocs.org/tcds/A16EA) - Certificate PDF: https://openairdocs.org/files/sha256/d4/16/d4162222b3a5fa785fc9c09d5fedcdd0b24e81e8434c828021d6abc1f7906ee4 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D9F1ADB4DBC92F0D85256CC1007F3ABE.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA09369AC-D ## ADs that name it (0) None. ## Approved models (1) - True Flight Holdings LLC AG-5B ([TCDS A16EA](https://openairdocs.org/tcds/A16EA)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09369AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 23 of the Ir ederal A viation Kegulations. Original Product I ype Certifcate A umter: A I6EA Make: American General Model: AG-5B Description of Type Design Change: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-822-20/30, according to Bulletin No. 922, dated 6-15-98 and Master Drawing List No. 921096, dated 6-15-98 or later FAA Approved revisions of the above data (28 Volt System). FAA/DAS Approved Supplemental Flight Manual, P/N 891738, dated 6-19-98 is required for American General Model AG-SB for S-TEC System 20 or later FAA Approved revisions of the above supplement. (Sce Continuation Sheet, Page 2, a part of this STC.) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. suspended, revcked or a termination date is othereise established ty the Administrator of the. I ederal ' vialicn Administration. Date of Application: 6-17-98 Date Reissued: I ate of issuaner: 6-19-98 Date Amended: By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINSTRATO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) ) 2. FAA/DAS Approved Supplemental Flight Manual, P/N 891739, dated 6-19-98 is required for American General Model AG-5B for S-TEC System 30 or later FAA Approved revisions of the above supplement. 3. Compatibility of this modification with other previously approved modifications must be determined by the installer. 000 or imprisonment not sxcerding Ewars ubou FAA Foim 8110-2-1 (10-691 Fage 2 of 2 This certificate may be transferred in accordance with FAR 274 TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) _ (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement): Signature of grantor (In ink): ## Every issue (1) - June 19, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d4/16/d4162222b3a5fa785fc9c09d5fedcdd0b24e81e8434c828021d6abc1f7906ee4) --- 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.