STC SA12154IB

IMPORT SA12154IB MT-Propeller Entwicklung GmbH Flugplatzstrasse 1 94348 Atting Germany Part 3 Civil Air Regulations A1CE Textron Aviation Inc.

B24R, C24R

1. Installation of the MT-Propeller Entwicklung GmbH model MTV-12-B/188-59() propeller on the Textron Aviation Inc. B24R and C24R aircraft must be in accordance with MT-Propeller Entwicklung GmbH Master Documentation List, Doc # E-4281 Revision 3, dated May 8, 2025, or later European Union Aviation Safety Agency (EASA) accepted revisions, and MT-Propeller Entwicklung GmbH Installation Instructions, Doc # E-4284, Revision 0, dated April 23, 2024, or later EASA accepted revisions.

1. This Supplemental Type Certificate (STC) is applicable to all serial numbers for these Make-Models.

(See continuation sheet 3) March 20, 2025 September 30, 2025 John Yoo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 4

IMPORT SA12154IB 4

IMPORT SA12154IB Date Issued: September 30, 2025

Description of Type Design Change (continued):

2. Maintenance must be in accordance with MT-Propeller Entwicklung GmbH Instructions for Continued Airworthiness, Doc. # E-4285, Revision 1, dated April 24, 2025, or later EASA accepted revisions.

3. Operations must be in accordance with MT-Propeller Entwicklung GmbH's Airplane Flight Manual Supplement and Pilot's Operating Handbook (POH) Supplement, Doc # E-4283, Revision 1, dated April 24, 2025, or later EASA approved revisions.

Limitations and Conditions (continued)

2. The aircraft must be operated in accordance with the Limitations section of the Airplane Flight Manual Supplement and POH Supplement referenced in the Description section.

3. The installer must determine whether this design change is compatible with previously approved modifications.

4. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Certification Basis:

Based on Title 14 Code of Federal Regulations (CFR) 21.115 and 21.101, and the Federal Aviation Administration (FAA) policy for design changes that are identified as not significant in FAA Order 8110.48, the type certification basis for the modified Textron Aviation Inc. B24R and C24R aircraft is as follows:

a. The type certification basis for the Textron Aviation Inc. B24R and C24R aircraft is as shown on Type Certification Data Sheet (TCDS) A1CE for parts not changed or not affected by the change.

IMPORT SA12154IB Date Issued: September 30, 2025

Certification Basis (continued):

b. The type certification basis for the Textron Aviation Inc. B24R and C24R aircraft for parts changed or affected by the change is as shown on TCDS A1CE with the following exceptions:

• 14 CFR Part 36 at Amendment 36-32.

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