# STC ST09941AC - Type: Supplemental type certificate - Status: Current, Reissued - Holder: L2 Aviation, United States - Description: Installation of a Gables SATVOICE Annunciator Panel - Applied: March 18, 2022 - Status date: September 14, 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/fb/e0/fbe0bc49b45a97ddaea2d2dd7e24a4b2e777f6b46c8d150d7a1a0cea1730ba2a - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID158635135720260925160838.0001 - DRS record last changed: September 25, 2026 - Page: https://openairdocs.org/stc/ST09941AC ## ADs that name it (0) None. ## Approved models (2) - The Boeing Company 737-8 ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) - The Boeing Company 737-9 ([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. ST09941AC L2 Aviation 82 Comair Blvd Erlanger, KY 41018 Part 25 the Title 14, Code of Federal Regulations A16WE The Boeing Company 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) 03/18/2022 10/07/2024 09/14/2026 02/21/2024 for Jason S. Deutschman Acting Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 4 Installation of a Gables SATVOICE Annunciator Panel in accordance with L2 Consulting Services, Inc., Master Data List 2315-B136-MDL, Revision E, dated January 24, 2024, or later FAA approved revision. Airplane Flight Manual Supplement 2315-B136-AFM, Revision IR dated February 21, 2024, or later FAA approved revision is required. ST09941AC 09/14/2026 4 ST09941AC 09/14/2026 Limitations and Conditions (Continued): Instructions for Continued Airworthiness (ICA), L2 Consulting Services, Inc. Document 2315-B136-ICA, Rev. IR, Dated October 25, 2023, 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 FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Boeing 737-8/-9 is as follows: a. The type certification basis for Boeing Model 737 series airplanes is shown on TCDS A16WE for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference date of applications, March 18, 2022, is based upon part 25 as amended by Amendment 25-137 and 14 CFR part 26. 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: 14 CFR §25.23, 25.29, 25.301, 25.303, 25.307, 25.561, 25.601, 25.603, 25.605, 25.607, 25.609 (a)(b), 25.611, 25.613(a)(b)(c), 25.625(a)(b)(c), 25.771(a)(e), 25.773(a)(2), 25.777(a)(b)(c), 25.789(a), 25.869(a)(4), 25.899, 25.981(a)(3), 25.1301(a)(4)(b), 25.1307(c), 25.1309(b)(d)(f)(e), 25.1322(b), 23.1351(a), 25.1353(a), 25.1355(a), 25.1357(a)(c)(d), 25.1381, 25.1431(a)(c), 25.1419(a), 25.1501(b), 25.1519, 25.125, 25.1529, 25.1541, 25.1581, 25.1583(c)(1), 25.1585(a) (b), 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), 3 4 ST09941AC 09/14/2026 Certification Basis (Continued): Regulations per Type Certificate Data Sheet A16WE (Continued): 25.1713(a)(c), 25.1715, 25.1717, 25.1719, 25.1721(b)(c), 25.1729 Regulations at an intermediate or later amendment: None 14 CFR Part 26 regulations 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; 26.47 amendment 26-7 -END- 4 4 ## Every issue (2) - September 14, 2026: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/fb/e0/fbe0bc49b45a97ddaea2d2dd7e24a4b2e777f6b46c8d150d7a1a0cea1730ba2a) - October 7, 2024: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/88/93/889399e619b595fe7d3dcaa4e8b327d9afc8d35a1c7e88043d0357053c32ba89) --- 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.