# STC SA09269AC-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-722-20/30. - Applied: August 13, 1997 - Status date: April 23, 1999 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6) - Certificate PDF: https://openairdocs.org/files/sha256/e2/8b/e28b950607ffb6cc169727f643dc75c62df1c9c0043d115de3551623885797ae - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D79C0A71462A8CEB85256CC1007F3A54.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA09269AC-D ## ADs that name it (0) None. ## Approved models (1) - Cessna Aircraft Company 180K ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) ## 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: SA09269 AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Past 3 of the Livil di Regulations. Original Product Type Certificate A umber: 5A6 Make: Cessna Model: 180K Description of Type Design Change: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-722-20/30, according to Bulletin No. 822, Revision 3, dated 4-20-99 and Master Drawing List No. 921021, Revision C, dated 4-20-99 or later FAA Approved revisions of the above data (28 Volt System). Limitations and Conditions: e Also eligible on the above model (floatplane or amphibian) when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or STC SA1705WE (internal tip tanks). (See Continuation Sheets, Page 2, 3, and 4 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 Date of Application: 8-13-97 Date Reissued: Date of Issuance: 8-15-97 Date Amended: 1-14-99, 4-23-99, Revision 2 FEDERAL AVIATION By Direction of the Administrator All K (Signature) TOMINISTRATIO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) 000, or imprisonment not exceeding 3 years, or both. FAA Form B110-2(10-68) Page 1 of 4 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09269AC-D, Revision 2 Limitations and Conditions: (con't.) Also eligible on Cessna model 180K (landplane) when equipped with STC SA 1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or any combination of the following STCs: STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks). FAA/DAS Approved Supplemental Flight Manual, P/N 891501, dated 8-15-97 is required for Cessna Model 180K, S/N 18053000 and Below (Landplane, Floatplane or Amphibian) And The Above Model When Modified Per STC SA1705WE (Internal Tip Tanks) and/or STC SA1435WE (Robertson STOL) for S-TEC System 20 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 891502, dated 8-15-97 is required for Cessna Model 180K, S/N 18053001 and Up (Landplane, Floatplane or Amphibian) And The Above Model When Modified Per STC SA1705WE (Internal Tip Tanks) and/or STC SA1435WE (Robertson STOL) for S-TEC System 20 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Supplemental Flight Manual, P/N 891505, dated 8-15-97 is required for Cessna Model 180K, S/N 18053000 and Below (Landplane, Floatplane or Amphibian) And The Above Model When Modified Per STC SA1705WE (Internal Tip Tanks) and/or STC SA1435WE (Robertson STOL) for S-TEC System 30 or later FAA Approved revisions of the above supplement. 6. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891506, dated 8-15-97 is required for Cessna Model 180K, S/N 18053001 and Up (Landplane, Floatplane or Amphibian) And The Above Model When Modified Per STC SA1705WE (Internal Tip Tanks) and/or STC SA1435WE (Robertson STOL) for S-TEC System 30 or later FAA Approved FAA/DAS Approved Supplemental Flight Manual, P/N 891501, Revision 1, dated 1-14-99 is required for 1. Cessna model 180K, S/N 18053000 and below (floatplane or amphibian) and the above model when modified per STC SA1705WE (internal tip tanks) and/or STC SA1435WE (Robertson STOL) 2. Cessna model 180K, S/N 18053000 and below (landplane) and the above model when modified per STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks), and STC SA1435WE (Robertson STOL) or any combination of the above for S-TEC System 20 or later FAA Approved revisions of the above supplement. FAA Form 8110-2-1(10-69) Page 2 of 4 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09269AC-D, Revision 2 Limitations and Conditions: (con'1.) FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891502, Revision 1, dated 1-14-99 is required for 1. Cessna model 180K, S/N 18053001 and on (floatplane or amphibian) and the above model when modified per STC SA1705WE (internal tip tanks) and/or STC SA1435WE (Robertson STOL) 2. Cessna model 180K, S/N 18053001 and on (landplane) and the above model when modified per STC SA649NW (gross weight increase), STC SA0913ZSC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks), and STC SA1435WE (Robertson STOL) or any combination of the above for S-TEC System 20 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Supplemental Flight Manual, P/N 891505, Revision 1, dated 1-14-99 is required for 1. Cessna model 180K, S/N 18053000 and below (floatplane or amphibian) and the above model when modified per STC SA1705WE (internal tip tanks) and/or STC SA1435WE (Robertson STOL) 2. Cessna model 180K, S/N 18053000 and below (landplane) and the above model when modified per STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks), and STC SA1435WE (Robertson STOL) or any combination of the above for S-TEC System 30 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891506, Revision 1, dated 1-14-99 is required for 1. Cessna model 180K, S/N 18053001 and on (floatplane or amphibian) and the above model when modified per STC SA1705WE (internal tip tanks) and/or STC SA1435WE (Robertson STOL) 2. Cessna model 180K, S/N 18053001 and on (landplane) and the above model when modified per STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks), and STC SA1435WE (Robertson STOL) or any combination of the above for S-TEC System 30 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Supplemental Flight Manual, P/N 891501, Revision 2, dated 4-23-99 is required for 1. Cessna model 180K, S/N 18053000 and below (floatplane or amphibian) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or STC SA1705WE (internal tip tanks); 2. Cessna model 180K, S/N 18053000 and below (landplane) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or any combination of the following STCs: STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks) for S-TEC System 20 or later FAA Approved revisions of the above supplement. FAA Form 8110-2-1 (10-69) Page 3 of 4 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09269AC-D, Revision 2 Limitations and Conditions: (con't.) 12. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891502, Revision 2, dated 4-23-99 is required for 1. Cessna model 180K, S/N 18053001 and on (floatplane or amphibian) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or STC SA1705 WE (internal tip tanks); 2. Cessna model 180K, S/N 18053001 and on (landplane) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or any combination of the following STCS: STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks) for S-TEC System 20 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Supplemental Flight Manual, P/N 891505, Revision 2, dated 4-23-99 is required for 1. Cessna model 180K, S/N 18053000 and below (floatplane or amphibian) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or STC SA1705WE (internal tip tanks); 2. Cessna model 180K, S/N 18053000 and below (landplane) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or any combination of the following STCs: STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks) for S-TEC System 30 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891506, Revision 2, dated 4-23-99 is required for 1. Cessna model 180K, S/N 18053001 and on (floatplane or amphibian) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or STC SA1705WE (internal tip tanks); 2. Cessna model 180K, S/N 18053001 and on (landplane) and the above model when equipped with STC SA1435WE (Robertson STOL) or STC SA967CE (Horton STOL) and/or any combination of the following STCs: STC SA649NW (gross weight increase), STC SA09132SC (engine conversion), STC SA09030SC (Hartzell propeller), STC SA1603SO (speed kit), STC SA1705WE (internal tip tanks) for S-TEC System 30 or later FAA Approved revisions of the above supplement. 15. Compatibility of this modification with other previously approved modifications must be determined by the installer. FAA Form 8110-2-1(10-69) Page 4 of 4 The FAA will reissue the certificate in the name of the transferee and forward it The he ma 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) - April 23, 1999: Amended, Current. [certificate](https://openairdocs.org/files/sha256/e2/8b/e28b950607ffb6cc169727f643dc75c62df1c9c0043d115de3551623885797ae) --- 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.