# STC SA3649NM - Type: Supplemental type certificate - Status: Current, Issued - Holder: Aero Twin, Inc, United States - Description: Fabrication of rudder gust lock assembly - Applied: October 21, 1987 - Status date: September 22, 1988 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS A37CE](https://openairdocs.org/tcds/A37CE) - Certificate PDF: https://openairdocs.org/files/sha256/46/03/460320727b1310e1b5937deaf5328571f51003922609de32676b21eee2b4465f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E7616BBEB9605A7486257AE10065776F.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA3649NM ## ADs that name it (0) None. ## Approved models (2) - Cessna Aircraft Company 208 ([TCDS A37CE](https://openairdocs.org/tcds/A37CE)) - Cessna Aircraft Company 208B ([TCDS A37CE](https://openairdocs.org/tcds/A37CE)) ## 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 SA3649NM This certificate issued to: Aero Twin, Inc. 2404 Merrill Field Drive Anchorage, Alaska 99501 Part 23 of the Federal Aviation Regulations. Original Product - Type bertificate Number: A3TCE Make: Cessna Model: 208, 208A, and 208B. Description of Type Design Change: Fabrication of rudder ground gust lOCK assembly in accordance with Aero Twin, Inc., Drawing List No. AT-3001 dated September 1, 1988 and Aero Twin, Inc., Assembly Instructions (Drawing No. AT3001) dated September 1, 1988, or later FAA approved revision(s); and installation of said rudder ground gust lock assembly in accordance with Aero Twin, Inc., Installation Drawing List No. AT-3001-I dated September 1, 1988 and Aero Twin, Inc., Installation Instructions (Drawing No. AT3001) dated September 1, 1988, or later FAA approved revision (s). Limitations and Conditions: The approval of this change in type design applies to the basic Cessna 208, 208A, and 208B airplanes only. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the modifications will introduce no adverse effect on the airworthiness of such (See Continuation Sheet) Date of Application: October 21, 1987 Date Reissued: Date of Issuance: . September 22, 1988 Date Amended: FEDERAL AVIATION By Direction of the Administrator Alan Stucktanen Alan C. Strickfaden {ignature) Supervisor TO MINISTRATO Anchorage Aircraft Certification Field Office (Title) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA36491M Limitations and Conditions: (Continued) aircratt: This determination should include consideration of significant changes in weight distribution. Cessna 208, 208A, and 208B airplanes modified in accordance with this Certificate must be operated in accordance with FAA approved Airplane Flight Manual Supplement dated September 22, 1988, or later FAA approved revision. Cessna 208, 208A, and 208B airplanes modified in accordance with this Certificate must be maintained in accordance with Aero Twin, Inc., Instructions for Continued Airworthiness dated September 1, 1988, or later FAA approved revision. **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES FAA AC 82-03578** ## Every issue (1) - September 22, 1988: Issued, Current. [certificate](https://openairdocs.org/files/sha256/46/03/460320727b1310e1b5937deaf5328571f51003922609de32676b21eee2b4465f) --- 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.