STC SA00769CH

Part * of the * Regulations. *

Original Product--Type Certificate Number: * *See attached FAA Approved Model List Make: * (AML) No. SA00769CH for list of approved engine Model : * models and applicable airworthiness regulations Description of Type Design Change:

Installation of Champion Limited Authority Spark Advance Regulator (LASARTM) ignition system with Cylinder Head Temperature (CHT) monitoring capability on airframes with FAA approved installations of Textron Lycoming model IO-540, AEIO-540 and HIO-540 engines. The LASARTM system must be installed on the engine in accordance with Unison Service letter listed on AML, or later FAA approved revision and STC SE00768CH.

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

2. CHT probe is required for all LASAR™ system aircraft installation.

3. Unison Flight Manual Supplement listed on the AML or later FAA approved revision is required for this installation.

4. Operation of LASARTM system equipped engines requires a minimum grade of 100 Octane Av-Gas.

5. The LASARTM system is armed and ready to fire at engine TDC when the ignition switch is in the “BOTH” or “START” position and the master switch is “ON”. Forward and reverse movement of the propeller may trigger an ignition event.

6. A copy of this Certificate and AML No. SA00769CH dated October 21, 1997, or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft.

7. 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.

Champion Aerospace LLC 1230 Old Norris Road Liberty, SC 29657

Date reissued : February 10, 2009

Original Signed By: Thaddeus D. Krolicki, Jr

( Signature) Thaddeus D. Krolicki, Jr.

Manager, Propulsion Branch Chicago Aircraft Certification Office

( Title) Date of application : March 20, 1997

Date of issuance : October 21, 1997