STC SA02022AK

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number S102022A8 This certificate issued to: Aero Twin, Inc.

2404 Merrill Field Drive Anchorage, AK 99501 Part 3+ of the Civi1 Air Pegulalions. * (See Type Certificate Data Sheet for complete Certification Basis) Original Product Typo Certificato Number: 5A6 Make: Cessna Model: 180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K Description of Type Design Change: Installation of Aero Twin, Inc. Main Geax Gravel Deflector Kit No. GD5-100 when manufactured in accordance with Aero Twin, Inc. Drawing List No. AT1600, Revised per ECO AT-40, dated July 4, 1997, or later FAA approved revision, and installed in accordance with Aero Twin, Inc.

Installation Instructions revised per ECO AT-40, dated July 4, 1997, or later FAA approved revision.

Limitations and Conditions: Compatibility of this design change with previously approved modifications must be determined by the installer.

Date of Application: Octobes 25, 1988 Date Reissued:

Date of Issuance: August 12, 1991 Date Amended: August 13, 1998 FEDERAL AVIATION Se livein of to Seriate (Signature) Michael K. Dahl TOMINS TRATION Manager Anchorage Aircraft Certification Office (Title)

FAA Form 9110-2(10-68)