STC SA00444SE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA00444SE This certificate issued to: Micro Aerodynamics, Inc.

4000 Airport Road, Suite D Anacortes, WA 98221 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meet's the airworthiness requirement's of Part 21.25 of the Federal Aviation Regulations.

Original Product -Type Certificate Number: A26WE Make: Weatherly Model: 620, 620A, and 620B Description of Type Design Change: Install Vortex Generators on the wings per Micro Aerodynamics drawing package MA2083, Revision IR, dated April 4, 1997, and Installation Manual MA2084, Revision IR, dated April 4, 1997, or later FAA approved revisions.

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft 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 that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. Additionally if more than 5 vortex generators are damaged or missing, the aircraft is not to be considered airworthy. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

The STC holder will provide a written permission statement to each person it authorizes to use this certificate to alter the product,

Date of Application: April 17, 1997 Date Reissued:

Date of Issuance: May 28, 1997 Date Amended:

FEDERAL KHATION y dicotion of the Stdministrate (Signature) TOMINIST RATIOD Acting Manager, Seattle Aircraf Certification Office (Title)