STC SA00227DE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA00227DE This certificate issued to: Stevens Aviation, Inc.

Part 23 of the Federal Aviation Regulations.

Original Product — Type Certificate Number: A31CE Make: Beech Aircraft Corporation Model: F90 Description of Type Design Change:

Installation of protective panel to prevent ice impact damage to aircraft nose structure in accordance with Stevens Aviation Drawing TW-S-613-001, Initial Release, dated January 8, 1996 or later FAA approved revision.

1. 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.

2. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

Date of Application: January 16, 1996 Date Reissued:

Date of Issuance: May 3, 1996 Date Amended:

FEDERA AVIATION By direction of the Laministrp 20→2 RONALD F. MAY (Signature) Manager HOMINIST RATION Denver Aircraft Certification Office Northwest Mountain Region, Denver, Colorado (Title)