STC SA11874LA

IMPORT SA11874LA Q.C.M. Design GmbH Eichholzweg 20-24 3123 Belp Switzerland Part 23 Title 14 Code of Federal Regulations A1WI Textron Aviation 525

1. Installation of Collins Iridium Certus Satcom must be in accordance with QCM Design GmbH Engineering Bulletin EB-C525-QCM23-001, Initial issue, Revision 0, dated March 29, 2024, or later EASA approved revision.

1. This STC is applicable to all serial numbers of the Textron 525.

2. Maintenance must be done in accordance with the "Airworthiness Limitation Section" of QCM Design GmbH Instructions for Continued Airworthiness referenced under the Description section.

(See Continuation Sheet 3) August 22, 2024 January 17, 2025 John Yoo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3

IMPORT SA11874LA 3

IMPORT SA11874LA Date Issued: January 17, 2025

Description of Type Design Change (continued):

2. Maintenance in accordance with QCM Design GmbH Instructions for Continued Airworthiness C525-QCM23-001-M1-ICA, Revision 1, dated November 6, 2024, or later EASA accepted revision.

3. Operation in accordance with QCM Design GmbH Airplane Flight Manual Supplement C525-QCM23-001-M1-AFM, Revision 1, dated December 21, 2024, or later EASA approved revision.

3. Operation must be in accordance with the limitations section of the QCM Design GmbH flight manual supplement referenced in the Description section.

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

5. If the holder agrees to permit another person to use the certificate to alter the product, the holder shall give the other person written evidence of that permission.

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