STC SA4178SW

United States of America Department of Transportation_Federal Aviation Administration Supplemental Type Certificate N umber SA4178SW This certificate, issued to Apache Modification Aircraft Corportion 1893 Airport Road Kalispell, Montana 59901 Part 3* of the Civil Air Regulations.

*Certification basis is set forth in Type Certificate Data Sheet 1A10 Original ProductType Certificate Number: 1A10 Make: Piper Model: PA-23, PA-23-160, PA-23-235, PA-23-250 Description of the Type Design Change:

Installation of 718-1 instrument panel assembly or optional 718-3 assembly according to Seguin Aviation Drawing 718 (Sheet 7 of 7) Revision A, dated August 11, 1980, or later FAA approved revision.

1. Eligible on Piper Model PA-23-250 up to and including Serial No. 27-8154030.

2. Instructions for Continued Airworthiness, AMAC ICA-1, Revision Original, dated 01/07/2014, or later FAA accepted revision is required for this installation

3. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft.

4. 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.

Date of application: April 28, 1980 Date reissued: 11/24/1992, 10/10/1997 Date of issuance: August 15, 1980 Date amended: 12/30/1982; 12/16/1993 Rev.2 03/03/2014

Todd Dixon (Signature) Northwest Mountain Regional Manager Denver Aircraft Certification Office (Title)