# STC SA09253AC-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model ST-593. - Applied: June 30, 1997 - Status date: April 16, 1998 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A18SW](https://openairdocs.org/tcds/A18SW) - Certificate PDF: https://openairdocs.org/files/sha256/a7/65/a7658878f112699c3a70602ecf1c48e5174ccd4a4b86ae7d21e538cfd4413a5b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A1EF7965D8C73B3986257D1000719150.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA09253AC-D ## ADs that name it (0) None. ## Approved models (1) - M7 Aerospace LLC SA227-DC (C-26B) ([TCDS A18SW](https://openairdocs.org/tcds/A18SW)) ## 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: SA09253AC-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 product with the limitations and conditions therejor as specifed hereen meets the aiworthiness regurements of Part 23 of the Fedent I viation Regulations. Original Product Type Certifate A umber: A 18SW Make: Fairchild Aircraft Model: SA227-DC (C-26B) Installation of S-TEC System 65 Two Axis Automatic Flight Guidance System, Model S1-593, according to Bulletin No. 693, Revision 9, dated 4-13-98 and Master Drawing List No. 92800, Revision I, dated 4-13-98 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 P/N 27-19008-2. 2. Not eligible When Equipped With McCauley Propeller Model C-663. (See 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 othernse established by the Administrator of the Federal s viation Administration. Date of Application: 6-30-97 Date Reissued: Date of Issuance: 7-02-97 Date Amended: 9-04-97, 3-17-98, 4-16-98, Revision 3 By Direction of the Administrator FEDERAL AVIATION Signature TOMINISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title) FAR Form 8110-2(10-681 Page 1 of 2 This certificate may be transferred in accordance with FAR 21 47. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09253AC-D Revision 3 Limitations and Conditions: (con't.) 3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891447, dated 7-02-97 is required for Fairchild Aircraft Model SA227-DC (C-26B) or later FAA Approved revisions of the above supplement. 4. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891447, Revision 1, dated 9-04-97 is required for Fairchild Aircraft Model SA227-DC (C-26B) When Equipped With Trim Actuator P/N 27-19008-2 (Except When Equipped With McCauley Propeller Model C-663) or later FAA Approved revisions of the above supplement. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891447, Revision 2, dated 3-17-98 is required for Fairchild Aircraft Model SA227-DC (C-26B) When Equipped With Trim Actuator P/N 27-19008-2 (Except When Equipped With McCauley Propeller Model C-663) or later FAA Approved revisions of the above supplement. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 891447, Revision 3, dated 4-16-98 is required for Fairchild Aircraft Model SA227-DC (C-26B) When Equipped With Trim Actuator P/N 27-19008-2 (Except When Equipped With McCauley Propeller Model C-663) or later FAA Approved revisions of the above supplement. Compatibility of this modification with other previously approved modifications must be determined by the installer. FAA Form B110-2-T(10-69) Page 2 of 2 This certificate may be transferred in accordancs with FAR 21-47. The FAA will reissue the certificate in the name of the transferee and forward it to ilmu TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, atate, and 2IP code) from (Name of grantor) (Print or type) (Address of grantor) (Number & street) (City, State, and 2IP code) Extent of Authority (if licensing agreement): Signature of grantor (In ink) : ## Every issue (1) - April 16, 1998: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a7/65/a7658878f112699c3a70602ecf1c48e5174ccd4a4b86ae7d21e538cfd4413a5b) --- 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.