# STC ST09927AC - Type: Supplemental type certificate - Status: Current, Reissued - Holder: L2 Aviation, United States - Description: Installation of a Gables Audio Management System - Applied: September 13, 2021 - Status date: June 5, 2026 - Product: Aircraft, Large Airplane - Certification basis: Part 25 - Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) - Certificate PDF: https://openairdocs.org/files/sha256/b7/db/b7db278ff3e1a58f1f69e0256005603c25a8734a0467e42ff31a37603daeee23 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125824547620260723181858.0001 - DRS record last changed: July 23, 2026 - Page: https://openairdocs.org/stc/ST09927AC ## ADs that name it (0) None. ## Approved models (6) - The Boeing Company 737-700 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) - The Boeing Company 737-8 ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) - The Boeing Company 737-800 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) - The Boeing Company 737-9 ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) - The Boeing Company 737-900 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) - The Boeing Company 737-900ER Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) ## 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. ST09927AC L2 Aviation 82 Comair Blvd Erlanger, KY 41018 Part 25 the Title 14, Code of Federal Regulations A16WE The Boeing Company 737-700/-800/-900/-900ER Series, 737-8, 737-9 The installer must determine whether this design change is compatible with previously approved modifications. 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. (See Continuation Sheet 3 of 4) 09/13/2021 04/25/2022 10/07/2024 06/05/2026 04/11/2022 02/14/2024 for Jason S. Deutschman Acting Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 4 Installation of a Gables Audio Management System in accordance with L2 Consulting Services, Inc. Master Data List 2351-B130-MDL, Revision B, dated March 10, 2022, or later FAA approved revision. Airplane Flight Manual Supplement 2351-B130-AFMS-01, Revision IR dated March 30, 2022, or 2351-B130-AFMS-02, Revision IR dated March 30, 2022, or later FAA approved revision is required. FAA 8110-2 ( 10/24) Page 2 of __ ST09927AC 06/05/2026 4 ST09927AC 06/05/2026 Limitations and Conditions (Continued): Instructions for Continued Airworthiness (ICA), L2 Consulting Services, Inc. Document 2351-B130-ICA-01, Rev. IR, Dated March 4, 2022, or 2351-B130-ICA-02, Rev. IR, Dated March 10, 2022, or later FAA accepted revision must be made available to the operator at the time of installation. Note: The FAA has reviewed the applicant's assessment showing that this modification does not impact the existing electrical wiring interconnection system Instructions for Continued Airworthiness (EWIS ICA) and found that no additional EWIS ICA tasks are required. Certification Basis: Based on 14 CFR §21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this modification was determined to be Regulations per Type Certificate Data Sheet A16WE (amendments 25-1 through 25.141, plus exceptions in the TCDS): 14 CFR 25.29(a); 25.301(a); 25.303; 25.305(a), (b); 25.307(a); 25.561(a), (b); 25.601; 25.603; 25.605(a); 25.609(a); 25.611; 25.613(a), (b), (c); 25.771(a); 25.789(a); 25.1301(a); 25.1309(b), (c), (d), (e); 25.1322; 25.1351(a); 25.1353(a), (c); 25.1355(a), (c); 25.1357(a), (c), (e); 25.1381 (a), (b); 25.1431(a), (b), (c), (d); 25.1519; 25.1529; 25.1541(b); 25.1581; 25.1583(c)(1); 25.1585(a), (b) Additional regulations for models 737-8 and 737-9 25.1703(a)(1)(2)(3)(4)(b), 25.1705(b)(7)(8), 25.1707(a)(b)(e)(f)(g)(h)(i)(j)(l), 25.1711(a), 25.1713(a)(c), 25.1715, 25.1717, 25.1719, 25.1721(b)(c), 25.1729 Regulations at an intermediate amendment Regulations at amendment 25-125: 25.981 (a)(3), (d) Regulations at amendment 25-136: 25.773 (a)(2) 3 4 ST09927AC 06/05/2026 Certification Basis (Continued): Based on 14 CFR §21.101(g), applicable provisions of 14 CFR part 26 are included in the certification basis. For any future 14 CFR part 26 amendments, the holder of this STC must demonstrate compliance with the applicable sections. As of the issuance date of this STC, compliance has been found for the following regulations 14 CFR §26.11 - amendment 26-0 -END- 4 4 ## Every issue (3) - June 5, 2026: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b7/db/b7db278ff3e1a58f1f69e0256005603c25a8734a0467e42ff31a37603daeee23) - October 7, 2024: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/65/10/6510603c65901025bca655107b7228ae584c1fa5eeb08edd84b79d89539ff085) - February 14, 2024: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/e2/af/e2af3df39b139eeb00102b10818d6c23a44d532b56765918f315e9442036efe7) --- 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.