# STC SA01911SE - Type: Supplemental type certificate - Status: Current, Issued - Holder: Micro AeroDynamics Inc, United States - Description: Installation of vortex generators on the wings and horizontal tail surfaces of the above model aircraft . - Applied: August 19, 2008 - Status date: September 25, 2008 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS A-799](https://openairdocs.org/tcds/A-799) - Certificate PDF: https://openairdocs.org/files/sha256/3f/8f/3f8f4efb1ebbc7782779268b0041402b60ef8541b5cb59fd1217bf73fb2cb7b8 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/283A050C16777F3F862574DD0061C5E6.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA01911SE ## ADs that name it (0) None. ## Approved models (1) - Cessna Aircraft Company 170 ([TCDS A-799](https://openairdocs.org/tcds/A-799)) ## 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. Number SA01911SE This certificate, issued to Micro AeroDynamics, Inc. 4000 Airport Road, Suite D Anacortes, WA 98221 Part 3 of the Civil Air Regulations. Original Product⎯Type Certificate Number: A-799 Rev. 54 Make: Cessna Model: 170 Description of the Type Design Change: Installation of vortex generators on the wings and horizontal tail surfaces of the above model aircraft in accordance with Drawing Package, MA2223, Rev. IR, dated August 19, 2008, and Installation Manual, MA2224, Rev. IR, dated September 8, 2008, or later FAA-approved revisions to these documents. NOTE: If more than five vortex generators are damaged or missing, the aircraft is not airworthy. Limitations and Conditions: Approval of this change in type design applies to the above aircraft only. This approval should not be extended to other aircraft on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft. 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: August 19, 2008 Date reissued: Date of issuance: September 25, 2008 Date amended: (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) ## Every issue (1) - September 25, 2008: Issued, Current. [certificate](https://openairdocs.org/files/sha256/3f/8f/3f8f4efb1ebbc7782779268b0041402b60ef8541b5cb59fd1217bf73fb2cb7b8) --- 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.