# STC SR09478RC - Type: Supplemental type certificate - Status: Current, Amended - Holder: Ahlers Aerospace Inc, United States - Description: Installation of Cockpit Infrared Filter System in accordance with Ahlers Aerospace Master Drawing List 407-01, (E99-80) Rev. D, dated May 11, 2007, or later FAA approved revision. Rotorcraft Flight Manual Supplement, RFMS, Cockpit Infrared Filter System For Bell Helicopter Model 407, Revision IR, dated May 11, 2007, or Rotorcraft Flight Manual Supplement, RFMS (E99-269), Cockpit Infrared Filter System For Bell Helicopter Model 407, Revision IR, dated June 08, 2011, or later FAA approved revision is required. Instructions for Continued Airworthiness Document Number E99-79, Revision B, or later revision is required for this installation. - Applied: April 11, 2006 - Status date: June 10, 2011 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 27 - Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW) - Certificate PDF: https://openairdocs.org/files/sha256/98/e3/98e3677da6b0b48a83a4e1a40d2c381f518283c32734f86d4e5af1251cb0705b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3BFE450661E35375862578B80040A980.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SR09478RC ## ADs that name it (0) None. ## Approved models (1) - 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. Number SR09478RC This certificate issued to Part 27 of the Federal Aviation Regulations. Description of Type Design Change: Installation of Cockpit Infrared Filter System in accordance with Ahlers Aerospace Master Drawing List 407-01, (E99-80) Rev. D, dated May 11, 2007, or later FAA approved revision. Rotorcraft Flight Manual Supplement, RFMS, Cockpit Infrared Filter System For Bell Helicopter Model 407, Revision IR, dated May 11, 2007, or Rotorcraft Flight Manual Supplement, RFMS (E99-269), Cockpit Infrared Filter System For Bell Helicopter Limitations and Conditions: The configuration(s) contained in this STC that require Rotorcraft Flight Manual Supplement, RFMS (E99-269), Revision IR, dated June 08, 2011, or later FAA approved revision requires two pilots for landing in unimproved landing sites. The installation of this Cockpit Infrared Filter System does not include or imply approval for flight operations with Night Vision Goggles (NVG). Ahlers Aerospace, Inc. 3621 Raider Drive Hurst, TX 76053 H2SW Make : Bell Helicopter Textron Canada Model : 407 Date reissued : Date amended : June 10, 2011 ( Signature) James A. Richmond, Acting Manager Rotorcraft Certification Office Southwest Region ( Title) Date of application : April 11, 2006 Date of issuance : May 11, 2007 P/N: SP3175RC-R PE: ST ASW-170 FAA Form 8110-2-1(10-69) Page 2 of 3 FAA Form 8110-2-1(10-69) Page 3 of 3 Number SR09478RC Date of Issuance: May 11, 2007 Date Amended: June 10, 2011 Description of Type Design Change (Continued): Model 407, Revision IR, dated June 08, 2011, or later FAA approved revision is required. Instructions for Continued Airworthiness Document Number E99-79, Revision B, or later revision is required for this installation. Limitations and Conditions (Continued): The operator must receive approval from the 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 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 re-evaluation 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. ## Every issue (1) - June 10, 2011: Amended, Current. [certificate](https://openairdocs.org/files/sha256/98/e3/98e3677da6b0b48a83a4e1a40d2c381f518283c32734f86d4e5af1251cb0705b) --- 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.