# STC SR09523RC - Type: Supplemental type certificate - Status: Current, Amended - Holder: Ahlers Aerospace Inc, United States - Description: Installation of Night Vision Goggle (NVG) compatible interior lighting system - Applied: January 22, 2008 - Status date: October 7, 2010 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 29 - Data sheets: [TCDS H13EU](https://openairdocs.org/tcds/H13EU) - Certificate PDF: https://openairdocs.org/files/sha256/c7/eb/c7ebb73b1b559d231e44f8ee50cd68aaa717eebafa400cb60756d32c9b8d0044 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8F6D65D657A746E9862577C200690514.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR09523RC ## ADs that name it (0) None. ## Approved models (3) - Eurocopter Deutschland GmbH MBB-BK 117 B-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Eurocopter Deutschland GmbH MBB-BK 117 B-2 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) - Eurocopter Deutschland GmbH MBB-BK 117 C-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU)) ## 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. Number SR09523RC P/N SA3141RC-R PE ST ASW-170 This certificate issued to Ahlers Aerospace, Inc. 3621 Raider Drive Hurst, TX 76053 Part 29 of the Federal Aviation Regulations. Original Product -- Type Certificate Number : H13EU Eurocopter Deutschland GMBH (ECD) Make : BK 117 A-4/B-1/B-2/C-1 Model: Description of Type Design Change: Installation of Night Vision Goggle (NVG) compatible interior lighting system in accordance with Ahlers Aerospace, Inc. (AAI) Master Drawing List 117-01 (E99-137), Rev. U, dated 9/2/2010, or later Federal Aviation Administration (FAA) approved revision. Rotorcraft Flight Manual Supplement, AAI Document No. E99- 151, Rev. C, dated September 27, 2010, or later FAA approved revision is required. Instructions for Limitations and Conditions: Installation of Infrared Filtered Cockpit Lighting does not include or imply approval for flight operations with Night Vision Goggles (NVG). The operator must receive approval from their Civil Aviation operational authority to operate with NVG. Any deviation to the cockpit/cabin configuration specified in the type design of this STC may affect the compatibility with Date of application : January 22, 2008 Date of issuance : July 11, 2008 Date reissued : Date amended:July 2, 2009; August 21, 2009; October 7, 2010 ( Signature) Lance T. Gant, Manager Rotorcraft Certification Office Southwest Region ( Title) FAA Form 8110-2-1(10-69) Page 2 of 3 FAA Form 8110-2-1(10-69) Page 3 of 3 Number SR09523RC Date of Issuance: July 11, 2008 Date Amended: October 07, 2010 Description of Type Design Change (Continued): Continued Airworthiness, AAI Document No. E99-138, Rev. F, dated 9/2/2010, or later revision is required for this installation. Limitations and Conditions (Continued): NVG and may require a re-evaluation by the FAA Aircraft Certification Office (ACO). Once the aircraft is modified with this STC, any future modification to the aircraft may also affect compatibility with NVG and may require reevaluation by the FAA ACO. 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 the product, the holder shall give the other person written evidence of that permission. Certification Basis: 14 CFR Part 29 to Amendment 29-40. ## Every issue (2) - October 7, 2010: Amended, Current. [certificate](https://openairdocs.org/files/sha256/c7/eb/c7ebb73b1b559d231e44f8ee50cd68aaa717eebafa400cb60756d32c9b8d0044) - July 2, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/12/54/1254d6ea707345c0add2c88ca26369e9625ea5c1ad94bd4fcf14e448c2d6d45c) --- 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.