# STC SA6042SW-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 60 two axis automatic flight guidance system, Model ST-199. - Applied: October 16, 1985 - Status date: May 24, 1990 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10) - Certificate PDF: https://openairdocs.org/files/sha256/6c/19/6c1994e7fbee01c19633528283e148247da94de1a23cc8ea68557543e44da9bf - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/16EAC32E148C03EA85256CC200569E19.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA6042SW-D ## ADs that name it (0) None. ## Approved models (12) - Textron Aviation Inc. 310I ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310J ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310K ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310L ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310N ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. 310R ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. E310J ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. T310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. T310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. T310R ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. Anita Sates & 2acrica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA60425W-0 This certificate issued to: S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 Certifies that the change in the type design for the following product with the limitations and conditions. shamefor as specified hereon meets the airworthiness reguirements of Port 3 of the CIVil Air Regulations Original Product -Typebortificale Numbos: 3A10 Make: Cessna Model: .3101, 310J, E310J, 310K, 310L, 310N, 310P, Description of Type Design Change: T310P, 310Q, T310Q, 310R and 1310R Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model l-199, according to Bulletin No. 299, Revision 5, dated 4-30-90 and Master Drawing _ist No. 92353, Revision E, dated 4-30-90 and/or later FAA Approved revisions of the above data (28 Volt System). 1. Also eligible on Models 3101, 310J, E310J, 310K, 310L and 310N When Modified Per STC SA412SO (300 H.P. Colemill Conversion). 2. Also eligible on Models T310P and T310Q When Modified Per STC SA2750SW (RAM Modification). (See Continuation Sheet, Page 2, a part of this STC.) 3 Vale of issuanco: 11-21-85 Date Amended: FEDERAL AVIATIO (Signalure) TAINISTRAIO DAS Staff Coordinator, DAS 5 SW Harold W. Holdeman (Title) РАл 1о0 8110-2 (10-68) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SAG042SW-D, Revision 3 Limitations and Conditions: (con't.) 3. FAA Approved Supplemental Flight Manual, P/N 89640, dated 11-21-85 is required for Models 3101, fod Nied Ser SiC SA1250 300 HP. 310m version a Abor Mater Shen Approved revisions of the above supplement. 4. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89/56, dated 9-25-87 is required for Cessna Model 310R and/or later FAA Approved revisions of the above supplement. 5. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Sove supie o and Be on and or later fal Aborted reviSions of thes 6. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89756-2, dated 5-24-90 is required for Cessna Models 310R and T310R and/or later FAA Approved revisions of the above supplement. 7. FAA Approved Supplemental Flight Manual, P/N 89855, dated 4-19-90 is required for Cessna Models 310P revisions of the above supplement. 8. Compatability of this modification with other previously approved modifications must be determined by the installer. TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) from (Name of grantor) (Print or type) (Address of grantor) (Number and sireel ; Signature of grantor (In ink): - _242-020 ## Every issue (1) - May 24, 1990: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/6c/19/6c1994e7fbee01c19633528283e148247da94de1a23cc8ea68557543e44da9bf) --- 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.