STC SA02273AK

P.O. Box 874805 Wasilla, Alaska 99687

Part 3 of the Civil Air Regulations.

Original Product Type Certificate Number : 1A2 Make : Piper Model : PA-18 series and PA-19 series

Installation of Performance Air Motive, Inc. (PAMI) PA-18 Muffler, in accordance with PAMI Muffler Installation Guide and Instructions for Continued Airworthiness, Document No. 2326-ICA, Revision (-), dated March 28, 2006, or later FAA approved revision.

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

2. 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.

3. For Instructions for Continued Airworthiness, refer to PAMI Muffler Installation Guide and Instructions for Continued Airworthiness, Document No. 2326-ICA, Revision (-), dated March 28, 2006, or later FAA approved revision.

4. Installation of PAMI PA-18 Muffler is limited to aircraft that were originally delivered with Lycoming O-320 150 hp engine or have been modified by installation of a Lycoming O-320 150 hp or 160 hp engine or Lycoming O-360 180 hp engine in accordance with FAA approved data. Installer must ensure proper clearances exist between Muffler and all lines, hoses, ducts, baffles, cables and cowl per installation instructions.

Date of application : 30 November 2005

Date of issuance : 23 June 2006 Date reissued :

Date amended : 24 August 2006

( Signature) Gregory J. Holt Manager Anchorage Aircraft Certification Office

(Title)