STC SA250CE

This certificate issued to

Part * of the * Regulations *

Install: Woodward Electronic Propeller Synchronizer or Synchrophaser System on light twin-engine airplanes.

Data Required: Data shown on Approved Model List.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. A copy of this Certificate and the FAA Approved Model List (AML) No. SA0250CE or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft.

3. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Ontic Engineering and Manufacturing Inc.

20400 Plummer Street Chatsworth, California 91311 * See attached FAA Approved Model List (AML) Make : SA250CE for list of Approved airplane models Model : and applicable airworthiness regulations.

Date reissued : October 21, 2004; June 24, 2005, April 30, 2007

Date amended : Aug. 12, 1965; Jul. 25, 1966; Jul. 19, 1967;

Oct. 21, 1968; Aug. 25, 1971; Aug. 27, 1971; May 12, 1972;

Jul. 26, 1974; Nov. 12, 1974; Dec.12, 1986; Oct. 8, 1987; Dec. 4, 1987 By direction of the Administrator

( Signature) Thomas A. Enyart Manager, Propulsion Branch Los Angeles Aircraft Certification Branch

( Title)

Date of application : June 2, 1964

Date of issuance : June 19, 1964