STC SA5193NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA5193NM This certificate issued to: Micro Aerodynamics, Inc.

Purt 3 of the Civil Air Regelations:

Original Product - Type lorificater Number: ATCE Make: Cessna Model: 421C and minimum control speed and to increase the take off weight to 7579 pounds and the ramp weight to 7629 Description of Type Design Change: Installation of vortex generators to affect reductions in stall speed pounds in accordance with Installation Manual MA2027 and Drawing List MA2026 Limitations and Conditions: Approval of this change in type design applies to the model aircraft listed above only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer 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. A copy of this certificate and the appropriate Airplane Flight Manual Supplement or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft.

September 20, 1991 Tale semended: May 17, 1994; July 6, 1994 FEDERA AVIATION By divetin sIdmin satraler

20.

( Signature ) TAINISTRATO Acting Manager, Seattle Aircraft Certification Office ( Title ) 47 FAA FORM 8110-2 (10-68)