STC SE03079AT

United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate

SURRENDERED Number: SE03079AT FAA 8110-2 (10/24) Page 1 of 2

This certificate issued to: This certificate has been surrendered by:

Air Repair, Inc.

920 Airport Road, Cleveland, MS 38732 Part 13 of Civil Air Regulations.

E-162

Teledyne Continental Description of Type Design Change: Model: W670 Series Modify the Teledyne Continental W670 Series aircraft engines by replacing the crankshaft front and rear main ball bearings with higher capacity roller bearings per Giroux Aviation, Inc. Supplement, including Installing Instructions and Drawing List, to Continental Form X30009 Overhaul Manual and Parts Catalog for W670 Series Aircraft Engines, Rev. none, dated March 30, 2003 or later approved revision.

Instructions for Continued Airworthiness are to be maintained per the instructions presented in the Supplement, Overhaul and Parts Catalog described in the above Description of Design Changes. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Date of Application: 6/23/99 Date Reissued: 1/30/23 2/19/25 Date of Issuance: 4/4/03 Date Amended:

Title: (for) Christina M. Underwood Manager, Eastern Certification Branch

United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate

SURRENDERED Number: SE03079AT FAA 8110-2 (10/24) Page 2 of 2

Effective Date: 10/29/24