STC SA4-903

FORM ACA-2417 (7-56) CLIFE RERANAUTIGE AOMIN13IRATION W.9, DEPARTMENT OF COMMERCE

FEDERAL AVIATION AGENCY Supplemental Type Certificate

1. NAME AND ADDRESS OF APPLICANT LA - 235 Form Approved, Budget Bureau No. 41-R1823 q-21 INSTRUCTIONS - Submit in triplicate to local FAA Flight Operations and Airworthiness Inspector. Copy will be returned to applicant upon issuance.

Supplemental Type Certificate APPLIED FOR:

Cooper Engineering Company AIRCRAFT ENGINE PROPELLER Box 3428 Van Nuys, California PIPER PA-22 Series ORIGINAL MODEL DESIGNATION NEW MODEL DESIGNATION (If desired) Same

3. DESCRIPTION OF CHANGE in Cooper Engineering Company Manual 101 dated January 2, 1958. rudder and elevator with Ceconite 10l in accordance with procedures contained Cover of fuselage, wings, horizontal and vertical stabilizer, ailerons, flaps, introduce no adverse effect upon the airworthiness of that airplane. tween this change and any of those other previously approved modifications will tions are incorporated unless it is determined that the interrelationship be- LIMITATION OF APPLICABILITY. This approval should not be extended to other specific airplanes of this model on which other previously approved modifica- 4a. WILL DATA BE AVAILABLE FOR SALE OR RELEASE TO OTHER PERSONS? YES NO

•. WILL PARTS BE MANUFACTURED FOR SALE (Ref. CAR 1.55)? X YES NO

5. SIGNATURE AND TITLE OF APPLICANT August 10, 1952 Daniel A. Cooper Danil alon Date of Application: President TITLE

6. TO BE COMPLETED BY CA FAA

NATURE AND LOCATION OF DATA Cooper Engineering Company Manual 101 dated January 2, 1958.

Los Angeles, California Data are on file in the Aircraft Engineering Division, FAA, Region IV, Certification Basis: CAR 3.

ORIGINAL TYPE CERTIFICATE NO. CA APPROVAL 1A6 FAA Supplemental Type Certificate NO. ORIGINAL SIGNED BY CHARLES R. HAWKS SAL-903 W. A. Klikoff SIGNATURE

DATE OF APPROVAL Chief, Aircraft Engineering Division September 1, 1959 USCOMM-DC 32772 TITLE FORM ACA-2417 (7-56)