STC SA4110WE

United States of America 8100 Department of Transportation Federal Aviation Administration Supplemental Type Certificate

RESTRICTED CATEGORY Number: SA4110HE This certificate issued to: Serv-Aero Engineering Inc.

37 Mortensen Avenue Salinas, California 93905 Part 8* of the CiVil Air Regulations: " see Aircraft Specification No. A4SW for complete Certification Basis Original Product - Type bertificate Number: ASH Make: Ayres Corporation Model: 600 S-2D, S-2R, S2R-R1340, S2R-R1820, S2R-T34, S2R-T15, S2R-R3S, S2R-T11, S2R-T65, S2R-T45, Description of Type Design Change: S2R-G5, S2R-G6, S2R-G10 Installation of spring-type tail wheel strut assembly in accordance with Serv-Aero FAA Master Drawing List MDL 2780 dated February 7, 1980, or later FAA approved revision.

Finitations and bendilions:

The approval for this modification applies to the above noted airplane model series only. This approval should not be extended to other specific airplanes of this model series on which other approved modifications are incorporated, unless it is determined that the interrelationship between this change and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft.

Dale sapplicalien: January 30, 1980 Jule missued:

Date of Issuance: March 7, 1980 Jale unendAugust 1, 1980, April 20, 1987, . October 20, 1993 EDER AVIATIO B.y (Signature ) OMINISTRA Los Angeles Aircraft Certification Office Manager, Airframe Branch

47.