# STC SR02444SE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: AEM USA Inc., United States - Description: Installation of P178 Failsafe Audio Mixer - Applied: February 3, 2015 - Status date: April 16, 2026 - Product: Aircraft, Rotorcraft - Certification basis: Part 29 - Data sheets: [TCDS H13EU](https://openairdocs.org/tcds/H13EU), [TCDS H1SW](https://openairdocs.org/tcds/H1SW), [TCDS H4SW](https://openairdocs.org/tcds/H4SW), [TCDS H6SW](https://openairdocs.org/tcds/H6SW), [TCDS H10SW](https://openairdocs.org/tcds/H10SW) - Certificate PDF: https://openairdocs.org/files/sha256/d4/8d/d48d657cacf1db19eacc9610ddd27e5ea8197885a83cf8ce071839f3b0a048d8 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID121486251720260805174310.0001 - DRS record last changed: August 5, 2026 - Page: https://openairdocs.org/stc/SR02444SE ## ADs that name it (0) None. ## Approved models (19) - Airbus Helicopters Deutschland GmbH MBB-BK 117 A-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 A-3 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 A-4 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 B-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 B-2 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 C-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 C-2 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Airbus Helicopters Deutschland GmbH MBB-BK 117 D-2 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Bell Helicopter Textron Inc. 204B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Helicopter Textron Inc. 205A ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Helicopter Textron Inc. 205A-1 ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Helicopter Textron Inc. 205B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Helicopter Textron Inc. 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Helicopter Textron Inc. 214B ([TCDS H6SW](https://openairdocs.org/tcds/H6SW)) - Bell Helicopter Textron Inc. 214B-1 ([TCDS H6SW](https://openairdocs.org/tcds/H6SW)) - Bell Helicopter Textron Inc. 214ST ([TCDS H10SW](https://openairdocs.org/tcds/H10SW)) - Bell Helicopter Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Helicopter Textron Inc. 412CF ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Helicopter Textron Inc. 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) ## 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. SR02444SE AEM USA, Inc. 5441 S. Macadam Ave # 5932 Portland, OR 97239 * * * *See attached Federal Aviation Administration (FAA) Approved Model List (AML) SR02444SE for approved aircraft models and applicable airworthiness regulations Approval of this change in type design applies to the rotorcraft listed on AML SR02444SE 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 by the installer that the relationship between this change and other previously approved modifications will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this certificate, AML SR02444SE, and the ICA, must be maintained as part of the permanent records for the modified aircraft. 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. 02/03/2015 10/28/2015 11/16/2018 05/20/2022 06/30/2015 ✔ for Manager, West Certification Branch 3 Installation of P178 Failsafe Audio Mixer in accordance with Master List as listed on AML SR02444SE, or later FAA approved revision. Maintained in accordance with Instructions for Continued Airworthiness (ICA) as listed on AML SR02444SE, or later FAA-accepted revision. SR02444SE 04/16/2026 3 SR02444SE 04/16/2026 Date Reissued: 4/16/2026 ----------------------End---------------------- 3 3 Add Page ## Every issue (5) - April 16, 2026: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d4/8d/d48d657cacf1db19eacc9610ddd27e5ea8197885a83cf8ce071839f3b0a048d8) - May 20, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/e0/c8/e0c80fc1d946fa9dd6ac3cb471e98bff5bc0f882b2446a2e979dc13b0377b1e8), [AML SR02444SE.pdf](https://openairdocs.org/files/sha256/5c/25/5c2511718959382d4535a00c4bd2f1fbfab6195f911aa724acdcf1c5605364c5) - November 16, 2018: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/24/ca/24ca89ff5e2ae54d2cec259795110e5ea365c444a75933d471dacfd3a7e35d00), [SR02444SE_AML.pdf](https://openairdocs.org/files/sha256/d2/c4/d2c4e28eb29c7e78157f57b001905400d18143eac66449974b534939c0a3b267) - October 28, 2015: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/b8/e6/b8e616bd5f6e86603a54b9c8d1684ed6220d760c680f88933bff272b56ca8d4e), [SR02444SE_AML.pdf](https://openairdocs.org/files/sha256/d2/c4/d2c4e28eb29c7e78157f57b001905400d18143eac66449974b534939c0a3b267) - June 30, 2015: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/06/05/06050b451a9e9de110386f14ea4992429fe7b45a23c71e59b34e2749be959701), [SR02444SE_AML.pdf](https://openairdocs.org/files/sha256/d2/c4/d2c4e28eb29c7e78157f57b001905400d18143eac66449974b534939c0a3b267) --- 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.