STC SA00874SE

Number SA00874SE

This certificate, issued to Teufel Nursery, Inc.

3115 NE Cornell Road Hillsboro, OR 97124

Part 23 of the Federal Aviation Regulations.

Original ProductType Certificate Number: A8EA Make: Piper Model: PA-31T

Description of the Type Design Change: Install two Pratt & Whitney PT6A-34 engines in place of PT6A-28 engines per Master Document List TFL-PA31T-D01, Revision IR, dated November 29, 2000, or later FAA approved revision. Inspect and maintain this modification in accordance with Instructions for Continued Airworthiness, Document TFL-PA31T-R34, Revision IR, dated November 29, 2000, or later FAA approved revision.

Limitations and Conditions : Data pertaining to this modification are considered inadequate for installation of this modification in other aircraft. This approval is limited to the modification of Piper Model PA-31T airplane S/N 31T-7920046, R/N N700LT only. The aircraft must be operated in accordance with the FAA Approved Flight Manual Supplement (AFMS), Document TFL-PA31T-R33, dated January 31, 2001, or later FAA approved revision. Only the Hartzell Propeller Hub Model HC-B3TN-3(B) and Blade Model T-10173(B)-8 may be used with the PT6A-34 engines. A copy of this Certificate and FAA AFMS, dated January 31, 2001, must be maintained as part of the permanent records for this aircraft.

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: June 13, 2000 Date reissued:

Date of issuance: January 31, 2001 Date amended:

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)