STC SE00028EN

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SE00028EN This certificate issued to: Pratt & Whitney Engine Services, Inc 249 Vanderbilt Ave.

Norwood, MA 02062 Purt 33 of the Fedetal Aviation

•Regulutions.

Original Product Type Certificute Vumber: EIEA Alute : Honeywell International Company T5309A, T5309B, T5309C, T5311A, T5311B Description of Type Design Change:

Installation of Pratt & Whitney Engine Services, Inc. SmartCycle Plus Engine Monitoring System, P/N EMU-K-010-1 on the specified T53 engine models.

Limitations and Conditions: 1) SmartCycle Plus Engine Monitoring System is designed as an electronic aid for recording engine trend and cycle data. This system does not eliminate any scheduled maintenance or parts replacement based on time or any engine Instructions for Continued Airworthiness monitoring requirements. Nor does it eliminate the requirement for manual recording of engine operating data required by FAA approved operating specifications or maintenance programs. 2) 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 berween this change and any previously approved modification will introduce no adverse effect upon the airworthiness of those aircraft. 3) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written taministruter of the Tudural Date of Application: May 8, 2000 Duf rised: August 21, 2002, October 22, 2007 Dule of issuunce October 13, 2000 Jule unended:

FEDERAL AVIATION By Direction of the Administrator (Signature) Diane M. Cook TOMINISTRATOR Manager, Engine Certification Branch Aircraft Certification Office (Title) Any alteration of FAR Form 8110-2110 Thin cortifi ate may be trar idance with FAR 21.47.