STC SA5254NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA5254NM This certificate issued to: Stevens Aviation, Inc.

Part 23 of the Federal Aviation Regulations.

Original Product -Type Certificate Number: A24CE Make: Beech Model: B200 Description of Type Design Change:

Installation of a Bendix/King Model EFS-50 Electronic Flight Instrument System in accordance with Stevens Aviation, Inc. Installation Master Drawing No. TW-A-485-000, Revision A, dated June 26, 1992, FAA approved July 6, 1992, or later FAA approved revision.

1. FAA approved Flight Manual Supplement No. TW-164, dated July 6, 1992, or later FAA approved revision is required.

2. The equipment and wiring installed by this STC are in compliance with FAA High Intensity Radiated Field (HIRF) protection requirements for systems which perform critical functions. To maintain the HIRF integrity, repairs and/or future interfaces to the wiring installation must be in accordance with the continued airworthiness procedures as outlined in Stevens Aviation Report No. TW-A-485-023, dated July 2, 1992, or later approved revision.

3. Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any other previously approved modifications will introduce no adverse effect upon the airworthiness of the aircraft. A copy of this Certificate and Flight Manual Supplement dated July 6, 1992 must be maintained as part of the permanent records for the modified aircraft.

Date of Application: April 15, 1992 Date Reissued: February 28, 1995 Date of Issuance: July 6, 1992 Date Amended: March 15, 1996 FEDERAL AVIATION By Direction of the Administrator

1. C ros.

DAVID T. GROSSMAN (Signature) Acting Manager O MINISTRATION Denver Aircraft Certification Office Northwest Mountain Region, Denver, Colorado (Title)