STC SA4131NM

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

(See Continuation Sheet Page 3 of 3 Pages) Page 1 of 3 SA4131NM Raisbeck Engineering Inc.

2811 South 102nd Street, Suite 100 Tukwila, WA 98168 Part 23 the Federal Aviation Regulations A31CE Beechcraft F90 Installation of Hartzell / Raisbeck Quiet Turbofan Propeller Installation in accordance with FAA sealed Raisbeck Engineering Drawing List 87-1500, dated July 14, 1987, or latest FAA approved revision. This installation consists of Hartzell 4-bladed propellers and aluminum hubs with spinners and a propeller de-icing system.

June 17, 1987 September 1, 2023 October 23, 1987 for Manager, West Certification Branch Data is suitable for reproduction and installation on the Beechcraft airplane Models listed in page 3. The approval of this change in type design applies to the model aircraft listed on page 3 only. This approval should not be extended to other aircraft of these models on which other previously approved modifications.

including changes in type design ,are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this certificate, Addendum No. SA4131NM and Raisbeck Engineering Drawing List 87-1500 shall be maintained as part of the permanent records of each aircraft. The FAA Airplane Flight Manual Supplement dated October 22, 1987, or later approved revision shall be attached to the Pilots Operating Handbook or Airplane Flight Manual for the aircraft.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

Page 2 of 3 SA4131NM

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

End Page 3 of 3 Limitations and Conditions Continuation:

SA4131NM 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.

Supplemental Type Certificate Addendum No. SA4131NM

The conditions and limitations of Type Certificate Data Sheet Number A31CE apply except where superseded by the following:

This Supplemental Type Certificate Data Sheet, which is part of STC SA4131NM, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Federal Aviation Regulations.

Supplemental Type Certificate Holder: Raisbeck Engineering, Inc.

Propellers and Propeller Limits:

2 Hartzell HC-D4N-3C hubs with Hartzell D9290S(K) blades in pairs Diameter 93.0 in. (maximum); minimum allowable for repair: 92.0 in. No further reduction permitted.

Airplane Models:

This in type design applies only to the Beechcraft Model F90 equipped with 2 Pratt & Whitney PT6A-135 or PT6A-135A engines.