# STC SA09138AC-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-620, - Applied: January 8, 1996 - Status date: October 16, 2001 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS 3A23](https://openairdocs.org/tcds/3A23) - Certificate PDF: https://openairdocs.org/files/sha256/8d/f5/8df5cc883b4f66a9ed4970e9ebbdf2a7bacb374c28c53d7e1bb5f25f75bd607b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9ECE100E0951C22B85256CC1007F39DB.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA09138AC-D ## ADs that name it (0) None. ## Approved models (8) - Maule Aerospace Technology Inc. M-5-210C ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-5-235C ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-6-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235A ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235B ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. MX-7-180 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. MX-7-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) ## 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: SA09138AC-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 limitutions and conditions therefor as specifed hereon meets the aurorthiness requiements of Fast 3 of the Civil A i Regulutions. Original Product Type Certifeate Number: 3A23 Maule M-5-210C, M-5-235C, M-6-235, MX-7-180, M-7-235, M-7-235A, M-7-235B, and MX-7-235 Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-620, according to Bulletin No. 720, Revision 4, dated 10-16-01 and Master Drawing List No. 92885, Revision D, dated 10-16-01 or later FAA Approved revisions of the above data (14 Volt System) Limitations and Conditions: (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. Date of Application: 1-08-96 Date wisued: Date of rismance: 1-12-96 Date Amended: 9-11-97, 10-16-01 By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINSTRATO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) 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 codel Extent of Authority (if licensing agreement): Signature of grantor (In ink): United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09138AC-D Limitations and Conditions: (con't.) 1. Eligible in Landplane, Floatplane or Amphibian Configuration. 2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891226S, dated 1-12-96 is required for Maule Models M-5-210C, M-5-235C, M-6-235, MX-7-180, M-7-235, and MX-7-235 or later FAA Approved revisions of the above supplement. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891226S, Revision 1, dated 9-11-97 is required for Maule Models M-5-210C, M-5-235C, M-6-235, MX-7-180, M-7-235, M-7-235A, M-7-235B, and MX-7-235 (Landplane Contiguration) 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 8915335, cated 9-11-97 is required for Maule Models M-5-210C, M-5-235C, M-6-235, MX-7-180, M-7-235, M-7-235A, M-7-235B, and MX-7-235 (Floatplane or Amphibian Configuration) or later FAA Approved revisions of the above supplement. 5. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891226S, Revision 2, dated 10-16-01 is required for Maule models M-5-210C, M-5-235C, M-6-235, MX-7-180, M-7-235, M-7-235A, M-7-235B, and MX-7-235 (landplane configuration) for S-TEC System 55/55X 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 891533S, Revision 1, dated 10-16-01 is required for Maule models M-5-210C, M-5-235C, M-6-235, MX-7-180, M-7-235, M-7-235A, M-7-235B, and MX-7-235 (floatplane or amphibian configuration) for S-TEC System 55/55X or later FAA Approved revisions of the above supplement. Come sislite ef this m Compatibility of this modification with other previously approved modifications must be determined пу a terarıon or cnıs sertiticace isaunısnapie e a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both. AA Form 8110-2-1(10-69) Page 2 cf 2 This cert. ficate may be transferred in accordance vith FAR 21.47. ## Every issue (1) - October 16, 2001: Amended, Current. [certificate](https://openairdocs.org/files/sha256/8d/f5/8df5cc883b4f66a9ed4970e9ebbdf2a7bacb374c28c53d7e1bb5f25f75bd607b) --- 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.