# STC SA09628AC-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: S-TEC Corporation, United States - Description: 1. Installation of S-TEC 01298 or 01304 Digital Flight Control System (DFCS), in according with Master Data List 921128, Rev. 11, dated 3-16-11 or later FAA Approved revisions of the above data. - Applied: April 16, 2003 - Status date: March 21, 2011 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21, Part 23 - Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4) - Certificate PDF: https://openairdocs.org/files/sha256/07/28/0728eeae82930f3867619a2ea2ed611f6e8fe3a816fc0f427f4239311ec0a486 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AA466310C0DECC6D8625787000728BEE.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA09628AC-D ## ADs that name it (0) None. ## Approved models (4) - Twin Commander Aircraft Corporation 690C ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft Corporation 690D ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft Corporation 695 ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) - Twin Commander Aircraft Corporation 695A ([TCDS 2A4](https://openairdocs.org/tcds/2A4)) ## 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. This Certificate issued to Part 3 of the Civil Air Regulations and .Part 23 of the Federal Aviation Regulations 1. Installation of S-TEC 01298 or 01304 Digital Flight Control System (DFCS), in according with Master Data List 921128, Rev. 11, dated 3-16-11 or later FAA Approved revisions of the above data. 1. STC SA01627CH, Meggitt EFIS installation is required for this modification. S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 2A4 Make : Twin Commander (Gulfstream) Model : 690C, 690D, 695, and 695A Date of application : April 16, 2003 Date of issuance : December 17, 2003 Date reissued : March 21, 2011 Date amended : August 25, 2008 By direction of the Administrator (Signature) Randy Harper ODA-100.3 ODA Administrator, ODA-700096-SW (Title) FAA Form 8110-2-1(10-69) Page 2 of 4 Number SA09628AC-D Date Reissued March 21, 2011 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 and street) (City, State, and ZIP code) Signature of grantor (In ink): FAA Form 8110-2-1(10-69) Page 3 of 4 Number SA09628AC-D Date Reissued March 21, 2011 Limitations and Conditions (con’t.) 2. FAA/DAS Approved Pilot’s Operating Handbook and/ or Airplane Flight Manual Supplement, P/N 892134, Rev. 1, dated 8-18-08 is required for Twin Commander models 690C, 690D, 695, and 695A for S-TEC 01298/01304 Digital Flight Control System with WAAS when Installed with Meggitt EFIS System or later FAA Approved revisions of the above supplement. 3. ODA Approved Pilot’s Operating Handbook and/or Airplane Flight Manual Supplement, P/N 892134, Rev. 2, dated 3-16-11 is required for Twin Commander models 690C, 690D, 695, and 695A for S-TEC 01298/01304 Digital Flight Control System with WAAS when Installed with Meggitt EFIS System or later FAA Approved revisions of the above supplement. 4. Compatibility of this modification with othe r previously approved modifications must be determined by the installer. 5. 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. Original STC Modification Certification Basis As approved by Michelle M Owsley, Manager ACO, FAA Southwest Region, 07/17/03, listed following: CAR 3.18-Inspection FAR 23.301(a)(b)(c)--Loads CAR 3.381(a)-Pilot Compartment FAR 23.303-Factor of Safety CAR 3.84 (a)Cockpit Controls FAR 23.305-Strength and Deformation CAR 3.652-Functional and Installation requirements FAR 23.307(a)-Pr oof of Structure CAR 3.661(a)-Arrangement and Visibility FAR 23.395(a)(1)-Control System Loads CAR 3.667-Automatic Pilot FAR 23.561(e)-Emergency Landing Conditions CAR 3.681(a)-Installation- Electrical System and Equip FAR 23.603-Materials and Workmanship CAR 3.682-Batteries FAR 23.605(a)-Fabrication methods CAR 3.690-Fuses or circuit breaker FAR 23.609-Protection of Structure CAR 3.691-Protective devices installation FAR 23. 611-Accessibility Provisions CAR 3.693-Electric Cables FAR 23. 613-Material Strength properties CAR 3.694-Switches FAR 23. 615(a)(c)-Design Properties CAR 3.695-Switch Installation FAR 23.619-Special Factors CAR 3.696-Instrument lights FAR 23.625-Fitting factors CAR 3.697-Instrument light installation FAR 23.627-Fatigue strength CAR 3.735-General operating limits and info FAR 23.685(a)(c)(d)-Control System Details CAR 3.755(a)-Markings and placards FAR 23.689(a)(b)(e)-Cable systems CAR 3.762-General Control markings FAR 23.693-Joints CAR 3.763-Aerodynamic controls FAR 23.1309(a)(c)(d) Equipment Systems and Installation CAR 3.765(b)-Accessory and aux controls FAR 23.1529, ICA CAR 3.777-Airplane flight manual CAR 3.779-Operating Procedures FAA Form 8110-2-1(10-69) Page 4 of 4 Number SA09628AC-D Date Reissued March 21, 2011 Modification Certification Basis The proposed STC amendment certification basis is a combination of CAR 3 and applicable 14CFR part 23 requirements as defined in the original STC Compliance Checklist, Doc. No. 97-5001-006. This is the same certification basis that the original STC was issued to in 2003. Those CAR 3 and 14CFR part 23 regulations as list ed in attached STC Compliance Checklist, Doc. No. 97-5001-006, will be complied in this STC project. ------------------------------------------------------------END ---------------------------------------------------------------- -- ## Every issue (2) - March 21, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/07/28/0728eeae82930f3867619a2ea2ed611f6e8fe3a816fc0f427f4239311ec0a486) - August 25, 2008: Amended, Current. [certificate](https://openairdocs.org/files/sha256/51/60/51607281d38a0728c975ebc3d4656259ac63311607e123ba9e8fbd123f2f59d8) --- 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.