STC SA4-320

1. NAME AND ADDRESS OF APPLICANT Jobmaster Company 1016 First Avenue South Seattle L, Washington.

L9-735 Form Approved, Budget Bureau No. 41-R1823 INSTRUCTIONS - Submit in triplicate to local CAA Aviation Safety Agent. Copy will be returned to applicant upon issuance.

Supplemental Type Certificate APPLIED FOR:

AIRCRAFT ENGINE PROPELLER

ORIGINAL MODEL DESIGNATION Bellanca CH-300 Seaplane NEW MODEL DESIGNATION (If desired)

3. DESCRIPTION OF CHANGE Installation of Ede 6h70 Floats.

The approval of this change in Type Design applies basically to: Standard Bellanca Model CH-300 Airplanes Only.

This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of these other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

*. WILL DATA BE AVAILABLE FOR SALE OR RELEASE TO OTHER PERSONS? YES NO WILL PARTS BE MANUFACTURED FOR SALE (Ref. CAR 1.55)? YES • NO

5. SIGNATURE AND TITLE OF APPLICANT scott Jobmaster Company, аку: 12, 1957. August SIGNATURE Ngr.

Date of Application: TITLE

6. TO BE COMPLETED BY CAA

NATURE AND LOCATION OF DATA 10026, contained in above applicant's files and at the Fourth Region Reports No. 11, 2h and 27; J-B1; Draving Nos. JB-23, 28, 29; JB-10025 and Aircraft Engineering Division, Los Angeles.

ORIGINAL TYPE CERTIFICATE NO. CAA APPROVAL 129 Supplemental Type Certificate NO. SIGNATURE We A. Klikoff SAL=320 OF APPROVAL Chief, Aircraft Engineering Division October 11, 1957 TITLE FORM ACA-2417 (7-56) COMM- DC 32484