# STC SA09236AC-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 55 Two Axis Automatic Flight Guidance System, Model ST-682, with Optional Autotrim System. - Applied: May 20, 1997 - Status date: January 27, 1998 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A24CE](https://openairdocs.org/tcds/A24CE) - Certificate PDF: https://openairdocs.org/files/sha256/5e/22/5e22b0749402c6b7e711a1f6ebf692d19def59689e85bc6a1958ef2a3c18f794 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2D340450A2055AD485256CC1007F3A34.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA09236AC-D ## ADs that name it (0) None. ## Approved models (2) - Raytheon Aircraft Company 1900 ([TCDS A24CE](https://openairdocs.org/tcds/A24CE)) - Raytheon Aircraft Company 1900C (C-12J) ([TCDS A24CE](https://openairdocs.org/tcds/A24CE)) ## 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: SA09236AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Certifies that the change in the type design for the following froduct with the limitations and conditions therefer as speciped hereon meets the aincorthiness regurements of Part 23 of the Frederal A viation Regulations. Original Product I ype Colifcate Number: A24CE Make: Beech Model: 1900 and 1900C (C-12J) Description of Type Design Change: Installation of S-TEC System 55 Two Axis Automatic Flight Guidance System, Model ST-682, with Optional Autotrim System, according to Bulletin No. 782, Revision 3, dated 1-21-98 and Master Drawing List No. 921001, Revision C, dated 1-21-98 with Optional Flight Director/Steering Horizon or later FAA Approved revisions of the above data (28 Volt System). Only eligible When Equipped With Trim Actuator Model Tamagawa Seiki, Ltd., P/N 7002082-3. (See Continuation Sheet, Page 2, a part of this STC.) Date of Application: 5-20-97 Date Reissued: Date of Issuance: 6-10-97 Date Amended: 1-27-98, Revision 1 By Direction of the Administrator FEDERAL AVIATION Wei Same (Signature TOMINISTRATO DAS Staff Coordinator, DAS 5 SW William J. Thomas (Title) Any alte by a fine of not exceeding Sl,000, or Imprisonment not ex eding A years, or both. FAA Form 8110-2410- United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09236AC-D, Revision I Limitations and Conditions: (con't.) 2 FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891435S, dated 6-10-97 is required for Beech Models 1900 and 1900C (C-12J) or later FAA Approved revisions of the above supplement. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891435S, Revision 1, dated 1-27-98 is required for Beech Models 1900 and 1900C (C-12J) When Equipped With Trim Actuator Model Tamagawa Seiki, Ltd., P/N 7002082-3 or later FAA Approved revisions of the above supplement. 4. Compatibility of this modification with other previously approved modifications must be determined by the installer. FAA Form 8110-2-1(10-69) Page 2 of 2 The EAA will reissue the certificate in the name of the transferee and forward it to mim. 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) - January 27, 1998: Amended, Current. [certificate](https://openairdocs.org/files/sha256/5e/22/5e22b0749402c6b7e711a1f6ebf692d19def59689e85bc6a1958ef2a3c18f794) --- 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.