STC SR00521SE

SR00521SE AEM USA, Inc.

5441 S. Macadam Ave # 5932 Portland, OR 97239 * * * *See attached Federal Aviation Administration (FAA) Approved Model List (AML) SR00521SE for approved aircraft models and applicable airworthiness regulations.

Approval of this change in type design applies to the above model rotorcraft only. This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated, unless it is determined that the relationship between this change and any of those other changes in type design will introduce no adverse effect upon the airworthiness of that rotorcraft. Rotorcraft modified in accordance with this supplemental type certificate must be operated in accordance with a copy of the FAA approved Rotorcraft Flight Manual Supplement as listed on AML SR00521SE. A copy of this certificate, the AML, the MDL, the RFMS, and the ICA must be maintained as part of the permanent records of the modified rotorcraft.

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.

02/20/1998 09/29/2014 10/28/2015 11/16/2018 08/03/1998 11/17/1998 06/03/1999 10/08/2004 ✔ for Manager, West Certification Branch 3 Installation of Geneva Aviation Audio System per Geneva Aviation Master Drawing List (MDL) as listed on AML SR00521SE. This modification must be inspected and maintained in accordance with the FAA accepted Instructions for Continued Airworthiness (ICA) as listed on AML SR00521SE.

SR00521SE 04/16/2026 3

SR00521SE 04/16/2026 Date Reissued: 5/20/2022; 4/16/2026 Date Amended: 11/17/2005; 4/9/2009; 6/21/2012; 1/23/2013

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