STC SE00026EN

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SE00026EN This certificate issued to: Pratt & Whitney Engines Services, Inc.

249 Vanderbilt Ave.

Norwood, MA 02062 Part 33 of the Federal Aviation Regulations.

Original Product Type Certificate Number : E1GL Make: Rolls Royce Allison Engine Company (Formerly Allison Engine) Model: 250-C28, 250-C28B, 250-C28C, 250-C30, 250- C3OS, 250-C30P, 250-C30M, 250-C30L, 250-C30R, 250-C30G, 250-C30U, 250-C30G/2, and 250-C30R/1 Description of Type Design Change: Installation of Prant & Whitney Lingine Services, Inc. Intellistart Plus +T Hectronic Control Unit (ECU), P/N DPU-K-010 on the specified 250 engine models. Airframe installation of the Mtair Avionies Corporation - AlliedSignal Aerospace Intellitart Plus + TM to be accomplished in accordance with applicable airframe STC.

Limitations and Conditions: 1) The IntelliStart Plus 'T FCU is designed to limit start temperatures and to provide an electronic aid for recording engine trend and cycle data. 2) The Intellistart Plus *TM ECT is designed as non-essential, ground use only equipment and cannot be used to replace pilot monitoring during start as required by FAN approved operating instructions for the aircraft.

This system does not climate any Rotocraft Flight Manual monitoring requirements or limitations during engine starts or the requirement for manual recording of engine operating data required by the FAN approved operating specifications or maintenance programs. 3) This approval shall not be incorporated in any engines of these models on which other previously approved modifications are incorporated, unless it is determined that the inter-relationship between this change and any previously approved modification will introduce no adverse effect upon the airworthiness of those 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 Reissued: . August 21, 2002, October 22, 2007 Date of Application: December 07, 1998 Date of Issuance: January 19, 2000 Date Amended: .

By Direction of the Administrator FEDERAL AVIATION (Signature) Diane M. Cook Manager, Engine Certification Branch TOMINSTRATO Aircraft Certification Office (Title) Any alteration of FAA Form