# STC SR00521SE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: AEM USA Inc., United States - Description: Installation of Geneva Aviation Audio System - Applied: February 20, 1998 - Status date: April 16, 2026 - Product: Aircraft, Rotorcraft - Certification basis: Part 27 - Data sheets: [TCDS H88EU](https://openairdocs.org/tcds/H88EU), [TCDS H9EU](https://openairdocs.org/tcds/H9EU), [TCDS H11EU](https://openairdocs.org/tcds/H11EU), [TCDS H2SW](https://openairdocs.org/tcds/H2SW) - Certificate PDF: https://openairdocs.org/files/sha256/7e/62/7e62fca98a56fe64df2373835b03f97207a56a92d518a09ae46a5b6c75b6c195 - Approved model list and other attachments: [SR00521SE_AML_4-16-2026.pdf](https://openairdocs.org/files/sha256/16/38/1638e2c4708cee4e2935b3f30228be3079fc5817d7ea40993137547311a85fe4) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119771307120260803155141.0001 - DRS record last changed: August 3, 2026 - Page: https://openairdocs.org/stc/SR00521SE ## ADs that name it (0) None. ## Approved models (29) - Airbus Helicopters AS-350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350B1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350B2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350B3 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350BA ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350C ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS-350D1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS355E ([TCDS H11EU](https://openairdocs.org/tcds/H11EU)) - Airbus Helicopters AS355F ([TCDS H11EU](https://openairdocs.org/tcds/H11EU)) - Airbus Helicopters AS355F1 ([TCDS H11EU](https://openairdocs.org/tcds/H11EU)) - Airbus Helicopters AS355F2 ([TCDS H11EU](https://openairdocs.org/tcds/H11EU)) - Airbus Helicopters AS355N ([TCDS H11EU](https://openairdocs.org/tcds/H11EU)) - Airbus Helicopters Deutschland GmbH EC135 P1 ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135 P2 ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135 P2+ ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135 T1 ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135 T2 ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135 T2+ ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135P3 ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Airbus Helicopters Deutschland GmbH EC135T3 ([TCDS H88EU](https://openairdocs.org/tcds/H88EU)) - Bell Helicopter Textron Canada Limited 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 206A-1 (OH-58A) ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 206L ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 206L-3 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 206L-4 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Helicopter Textron Canada Limited 407 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. 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 --------------------------END------------------------- 3 3 Add Page ### SR00521SE_AML_4-16-2026.pdf **FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR00521SE FOR** INSTALLATION OF A GENEVA AUDIO SYSTEM ISSUE DATE: June 3, 1999 Page 1 of 1 **ITEM ROTORCRAFT MAKE** **ROTORCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICATION** **BASIS FOR** **ALTERATION** **FAA APPROVED** **MASTER DRAWING LIST** **FAA APPROVED** **ROTORCRAFT FLIGHT** **MANUAL SUPPLEMENT** **INSTRUCTIONS FOR** **CONTINUED** **AIRWORTHINESS** AML REV DATE Drawing Revision* Number Revision* Number Revision** 1. Airbus Helicopters AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA, and AS350B3 H9EU FAR 27 GA182 Revision M, dated 6/13/13 GA182-3 Revision C, dated 11/7/13 ICA182-2 Revision A, dated 10/15/12 9/29/14 2. Airbus Helicopters AS355E, AS355F, AS355F1, AS355F2, and AS355N H11EU FAR 27 GA182 Revision M, dated 6/13/13 GA182-3 Revision C, dated 11/7/13 ICA182-2 Revision A, dated 10/15/12 9/29/14 3. Bell 206A, 206A-1 (OH-58A), 206B, 206L, 206L-1, 206L-3, 206L-4, and 407 H2SW FAR 27 GA182 Revision M, dated 6/13/13 GA182-6 Revision B, dated 11/7/13 ICA182-3 Revision A, dated 10/15/12 11/7/13 4. Airbus Helicopters Deutschland GmbH EC135P1, EC135T1, EC135P2, EC135T2, EC135P2+, EC135T2+, EC135P3, and EC135T3 H88EU FAR 27 GA182 Revision M, dated 6/13/13 GA182-12 Revision A, dated 11/7/13 ICA182-5 Revision A, dated 10/15/12 12/19/16 * Or later FAA Approved Revision ** Or later FAA Accepted Revision FAA Approved: for Manager, West Certification Branch AMENDED: 6/3/99; 11/17/05; 5/16/12; 1/23/13; 11/7/13; 1/7/14; 9/29/14; 12/19/16 REISSUED: 5/20/22; 4/16/2026 ## Every issue (11) - April 16, 2026: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/7e/62/7e62fca98a56fe64df2373835b03f97207a56a92d518a09ae46a5b6c75b6c195), [SR00521SE_AML_4-16-2026.pdf](https://openairdocs.org/files/sha256/16/38/1638e2c4708cee4e2935b3f30228be3079fc5817d7ea40993137547311a85fe4) - May 20, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/fe/b8/feb80a0087261bf45e0a3f29f8dc63f86710f04c233b1c02a168ec4551d1458f), [AML SR00521SE.pdf](https://openairdocs.org/files/sha256/57/c8/57c82772378a9453e363ff2685fa5af6072fdeca9f78a13fb7ce79282b91f8f3) - November 16, 2018: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/56/ea/56ea4ff4806a37562d0853ffc763f6c3b39671ae7f35c0a964e7e46e6b97132a), [SR00521SE_AML.pdf](https://openairdocs.org/files/sha256/e3/7d/e37d09bd5d0c8bf1a28b3529a79415f8785586b6d0764bcc052a7f875c2b6b12) - December 19, 2016: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/02/d4/02d4b37b848deeb53fabca77e735eae046047a154e2990cc0bed670e2b363ea5), [SR00521SE_AML.pdf](https://openairdocs.org/files/sha256/e3/7d/e37d09bd5d0c8bf1a28b3529a79415f8785586b6d0764bcc052a7f875c2b6b12) - October 28, 2015: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/02/d4/02d4b37b848deeb53fabca77e735eae046047a154e2990cc0bed670e2b363ea5), [SR00521SE_AML.pdf](https://openairdocs.org/files/sha256/b6/7f/b67fcecf119247c18a60a6315c25ac3a55383854a1b044d49fb7ea0bc451e094) - September 29, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/48/4a/484a08625565b005ac27d1da3e6d0139d3bdc4cc5ce5a4dc501d921becc74e83), [SR00521SE_AML.pdf](https://openairdocs.org/files/sha256/b6/7f/b67fcecf119247c18a60a6315c25ac3a55383854a1b044d49fb7ea0bc451e094) - January 7, 2014: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a0/88/a088687638b966f1fb441fc695bb00274eae88edd399a219c3f6b81ec0851617), [AML_SR00521SE.pdf](https://openairdocs.org/files/sha256/4a/a0/4aa0e4a58abc009d927d78268f56e52fe3ed088df241f5a5a8ac146084d32f86) - November 7, 2013: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a0/88/a088687638b966f1fb441fc695bb00274eae88edd399a219c3f6b81ec0851617), [SR00521SE AML.pdf](https://openairdocs.org/files/sha256/d1/94/d1949b18ac2796d616c23635a5c73af218c3993bc3483fe0ca6bb7b68aa3ddba) - June 21, 2012: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a0/88/a088687638b966f1fb441fc695bb00274eae88edd399a219c3f6b81ec0851617), [SR00521SE_AML.pdf](https://openairdocs.org/files/sha256/9c/3a/9c3af8a3fa6966922d32593fe422096eec80baa9404b58ea72fab19ebfec3923) - April 9, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a3/fe/a3fe0393a091a1940e84af57aa6eba851645152d9cd8121d250bc9974cc70f04), [SR00521SEAML.pdf](https://openairdocs.org/files/sha256/70/55/7055ab0d468066480ba69d5bf253ca51d6bce548f58df26cd1c9c441a2eb1e57) - November 17, 2005: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/24/10/2410b05691c049a9c9ea2008a7859eca19dcf9262faa61622ac8c6d6ea98d756), [SR00521SEAML.pdf](https://openairdocs.org/files/sha256/70/55/7055ab0d468066480ba69d5bf253ca51d6bce548f58df26cd1c9c441a2eb1e57) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.