# STC SR09531RC - Type: Supplemental type certificate - Status: Current, Issued - Holder: Aeronautical Accessories, United States - Description: Improved Hover Performance with Above Minimum Specification Power Kit - Applied: October 2, 2009 - Status date: March 30, 2010 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 27 - Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW) - Certificate PDF: https://openairdocs.org/files/sha256/72/03/7203f2c6ae062a82a52776ba37e727b47a227ef6093a854d19e554f141cc7388 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/72E14C7088F3DC4F862576FC0066128F.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SR09531RC ## 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 SR09531RC This certificate issued to Part 27 of the Federal Aviation Regulations. Description of Type Design Change: Improved Hover Performance with Above Minimum Specification Power Kit in accordance with BHTI Design Drawing 407-709-001, Revision Basic, dated January 18, 2010, or later FAA approved revision. Limitations and Conditions: The Improved Hover Performance with Above Minimum Specification Power Kit is a cockpit decal limiting the use of above minimum-specification power to a generator load no greater than 50 amperes. It includes a Flight Manual Supplement (BHT-407-FMS-8) containing a set of Hover Ceiling Charts showing OGE and IGE hover performance with appropriate Area A and B tail rotor controllability limits. The Installation Instructions for Plus Power Kit, Report Number BHT-407-11-24, dated February 17, 2010, containing Federal Aviation Administration, Fort Worth Aircraft Evaluation Group accepted Instructions for Continued Airworthiness, is required. Compatibility of this design change with previously approved modifications must be determined by the installer. 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. This certificate and the supporting data (which is the basis for approval) shall remain in effect until surrendered, suspended, revoked, or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Aeronautical Accessories, Inc. 441 Industrial Park Road Piney Flats, TN 37686 H2SW Make : Bell Helicopter Textron Canada Model : 407 Date of application : October 02, 2009 Date of issuance : February 18, 2010 Date reissued : March 30, 2010 ( Signature) Lance T. Gant, Manager Rotorcraft Certification Office Southwest Region ( Title) Comment [RL1]: Page: 1 FAA Form 8110-2-1(10-69) Page 3 of 3 Number: SR09531RC Date of application : October 02, 2009 Date of issuance : February 18, 2010 Date Reissued: March 30, 2010 Certification Basis: Subpart B Flight 27.45(b)[21], 27.45(c)[21], 27.45(c)(1)[21], 27.45(c)(2)[21],, 27.45(e)[21], 27.45(e)(1)[21], 27.45(e)(2)[21], 27.45(f)[21] Subpart E Powerplant 27.955(a)[23] 27.1011(c)[23], 27.1041(a)[23] Subpart G Operating Limitations and Information 27.1541(a)(2)[1], 27.1541(b)[1], 27.1541(b)(1)[1], 27.1541(b)(2)[1], 27.1581(a)[14], 27.1581(a)(1)[14], 27.1581(a)(2)[14], 27.1581(b)[14], 27.1581(d)[14], 27.1587(a)(2)(ii)[21] [END] ## Every issue (1) - March 30, 2010: Issued, Current. [certificate](https://openairdocs.org/files/sha256/72/03/7203f2c6ae062a82a52776ba37e727b47a227ef6093a854d19e554f141cc7388) --- 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.