# STC SH2691NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Hillsboro Aviation Inc, United States - Description: Fabrication, installation, and maintenance of the Vertical Reference Door - Applied: March 13, 1984 - Status date: June 7, 2016 - Product: Aircraft, Rotorcraft - Certification basis: Part 21 - Data sheets: [TCDS H1SW](https://openairdocs.org/tcds/H1SW) - Certificate PDF: https://openairdocs.org/files/sha256/8e/71/8e7112e9fd0b9ff790f7700a8a9904fdd6a95100216de7397c715652406110a8 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3EC16A3BAF5193B786257FCB0076B6C8.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SH2691NM ## ADs that name it (0) None. ## Approved models (3) - Bell Helicopter Textron Inc. 205A ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Helicopter Textron Inc. 205A-1 ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Helicopter Textron Inc. 205B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) ## 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 SH2691NM This certificate, issued to Hillsboro Aviation, Inc. 3845 NE 30th Avenue Hillsboro, OR 97124 Part 7 of the Civil Air Regulations. dated August 1, 1956, including Amendments 7-1 through 7-4 Original ProductType Certificate Number: H1SW Make: Bell Model: 205A, 205A-1, 205B Description of the Type Design Change: Fabrication, installation, and maintenance of the Vertical Reference Door in accordance with Heli-Trade Corporation’s Manual Number HT-STC-010, “Installation and Maintenance Instructions for Vertical Reference Door,” Revision 1, dated June 9, 2003, or later Federal Aviation Administration (FAA) approved revision; and Process and Control Document 01-0414, “General Instructions and Electrical Requirements for Installation of Avionics or Electrical Systems into Civilian Helicopters,” Revision A, dated June 3, 2003, or later FAA-approved revision. Limitations and Conditions: Approval of this change in type design applies only to the Bell Model 205 rotorcraft listed above. This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this certificate and Heli-Trade Corporation’s Manual Number HT-STC-010 must be maintained as part of the permanent records for the modified rotorcraft. 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. Date of application: March 13, 1984 Date reissued: 12/1/86; 6/17/03; 4/12/13; 6/7/16 Date of issuance: January 7, 1985 Date amended: 6/17/03; 9/23/03 (Signature) Manager, Seattle Aircraft Certification Office (Title) ## Every issue (3) - June 7, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8e/71/8e7112e9fd0b9ff790f7700a8a9904fdd6a95100216de7397c715652406110a8) - April 12, 2013: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/23/f4/23f4b883b1fd1abf68c545ec577fb7f1aaba88a19b37003025deaabc52d8f8e6) - September 23, 2003: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/e4/cf/e4cfc47cb948a322058a4e334e20469bb3087531976c7d22e3655a21070e4833) --- 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.