STC SA00223BO

FAA Form 8110-2(10-68) Page 1 of 2 Number SA00223BO This Certificate issued to Paul G. Babcock 1647 Main Street South Weymouth, MA 02190

Aeronautics Bulletin 7-A. See ATC 660.

Original Product Type Certificate Number : ATC 660 Make : Piper

Installation of a Continental A-75-8 engine and Sensenich Model W70DK-40 wood propeller, and components for a 1200 lb.

maximum weight.

Limitations and Conditions: Descriptive data pertaining to this modification is considered inadequate for duplication in other aircraft. This approval is limited to the installation made in Piper Model J-3, Serial Number 2057. This STC does not permit manufacturing of parts for multiple installations.

This modification is to be installed and maintained in accordance with Paul Babcock Installation Instructions and Instructions for Continued Airworthiness for Piper J-3, Serial Number 2057, dated December 14, 2005.

Date of application : January 20, 2005

Date of issuance : December 21, 2005 Date reissued :

( Signature) Robert G. Mann Manager Boston Aircraft Certification Office

(Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

Number SA00223BO

The Limitations and Conditions shown on Approved Type Certificate (ATC) No. 660 for the Piper Model J-3 aircraft with a Continental A-40 engine remain applicable with a Continental A-75-8 engine, except:

Engine: Continental A-75-8

Engine Limits: For all operations, 2600 RPM (75 HP)

Propeller – Sensenich Model W70DK-40 wood

Propeller Limits:

Static RPM at maximum permissible throttle setting:

Not over 2425, not under 1950 No additional tolerance permitted Diameter: Not over 70 inches, not under 68.5 inches

Maximum weight: 1220 lbs.

A copy of this STC must be included in the permanent records of the aircraft when it is modified in accordance with this STC.

….END….