# STC SR01946SE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Mechanical Specialties Inc, United States - Description: Installation of the Mechanical Specialties, Model UH606 - Applied: June 28, 2008 - Status date: April 19, 2012 - Product: Aircraft, Rotorcraft - Certification basis: Part 1, Part 21 - Data sheets: [TCDS R00007DE](https://openairdocs.org/tcds/R00007DE), [TCDS H13WE](https://openairdocs.org/tcds/H13WE), [TCDS R00005SE](https://openairdocs.org/tcds/R00005SE), [TCDS H7SO](https://openairdocs.org/tcds/H7SO) - Certificate PDF: https://openairdocs.org/files/sha256/30/2c/302c7eecfc3e05099c6139011e7cf253cabe014743021cde3a68264c07935a79 - Approved model list and other attachments: [SR01946SE AML.pdf](https://openairdocs.org/files/sha256/f2/60/f260014465ee2d5d367174d3c3bb1faf028b3483136e2aeb86848dfa4829ac1d) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5F415B995D5C9694862579EC00758C21.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR01946SE ## ADs that name it (0) None. ## Approved models (4) - Arrow Falcon Exporters Inc. UH-1H ([TCDS R00007DE](https://openairdocs.org/tcds/R00007DE)) - Northwest Rotorcraft LLC UH-1H ([TCDS R00005SE](https://openairdocs.org/tcds/R00005SE)) - Overseas Aircraft Support Inc UH-1H ([TCDS H7SO](https://openairdocs.org/tcds/H7SO)) - Rotorcraft Development Corporation UH-1H ([TCDS H13WE](https://openairdocs.org/tcds/H13WE)) ## 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 SR01946SE This certificate, issued to Mechanical Specialties, LLC 1000 85th Ave. SE Olympia, WA 98501 Part * of the * Regulations. Original ProductType Certificate Number: *See attached Approved Model List (AML) Make: No. SR01946SE for list of approved rotorcraft Model: Models and applicable airworthiness regulations Description of the Type Design Change: Installation of the Mechanical Specialties, LLC Model Number (No.) UH606 cargo hook and suspension assembly in accordance with Mechanical Specialties, LLC Document No. UH606-100-ICAW, paragraph 6, Revision A, dated November 9, 2008, or later Federal Aviation Administration (FAA) approved revision. Manufactured in accordance with Mechanical Specialties, LLC Master Document List No. MDL-205-60-100, Revision C, dated April 12, 2012, or later FAA-approved revisions. Maintained in accordance with Mechanical Specialties, LLC Document No. UH606-100-ICAW, Revision A, dated November 9, 2008, or later FAA-approved revision. Limitations and Conditions: Approval of this change in type design applies to only those rotorcraft listed on AML SR01946SE, reissued April 19, 2012, or later FAA-approved revision. This approval should not be extended to rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer 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. Model UH-1H rotorcraft modified in accordance with this STC must be operated in accordance with a copy of Mechanical Specialties, LLC Rotorcraft Flight Manual Supplement (RFMS) No. MSI-FMS-UH606- 01, dated March 30, 2012, or later FAA-approved revision. A copy of this certificate, AML SR01946SE, the FAA-approved RFMS, and the Instructions for Continued Airworthiness 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: June 28, 2008 Date reissued: April 19, 2012 Date of issuance: January 6, 2009 Date amended: August 26, 2009 (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) ### SR01946SE AML.pdf **FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR01946SE FOR** INSTALLATION OF A CARGO HOOK AND SUSPENSION ASSEMBLY ISSUE DATE: August 16, 2009 Page 1 of 1 **FAA APPROVED** **ROTORCRAFT FLIGHT** **MANUAL SUPPLEMENT** **FAA APPROVED MASTER** **DRAWING LIST** **ITEM ROTORCRAFT MAKE** **ROTORCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICATION** **BASIS FOR** ALTERATION Number Revision* Drawing Revision* AML REV DATE 1. Northwest Rotorcraft, LLC UH-1H R00005SE FAR21.15 (a)(2) MSI-FMS-UH606-01 dated March 30, 2012 IR MDL-205-60-100 dated April 12, 2012 C 4/19/12 2. Rotorcraft Development Corporation UH-1H H13WE FAR21.15 (a)(2) MSI-FMS-UH606-01 dated March 30, 2012 IR MDL-205-60-100 dated April 12, 2012 C 4/19/12 3. Overseas Aircraft Support, Inc. UH-1H H7SO FAR21.15 (a)(2) MSI-FMS-UH606-01 dated March 30, 2012 IR MDL-205-60-100 dated April 12, 2012 C 4/19/12 4. Arrow Falcon Exporters, Inc. UH-1H R00007DE FAR21.15 (a)(2) MSI-FMS-UH606-01 dated March 30, 2012 IR MDL-205-60-100 dated April 12, 2012 C 4/19/12 * Or later FAA Approved Revision FAA Approved: Acting Manager, Seattle Aircraft Certification Office AMENDED: April 19, 2012 REISSUED: ## Every issue (3) - April 19, 2012: Amended, Current. [certificate](https://openairdocs.org/files/sha256/30/2c/302c7eecfc3e05099c6139011e7cf253cabe014743021cde3a68264c07935a79), [SR01946SE AML.pdf](https://openairdocs.org/files/sha256/f2/60/f260014465ee2d5d367174d3c3bb1faf028b3483136e2aeb86848dfa4829ac1d) - August 27, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/8f/e1/8fe1f9035412b5622cf4dece3886ffd70c66a4c51152b6536c23eb98dc0773d6), [SR01946SE.pdf](https://openairdocs.org/files/sha256/76/35/7635e4d67c890b8148323900ae7c401b2f592a5827c4472e13afbad2498a190f) - January 6, 2009: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/1f/7f/1f7f2455567db947c5e24c189b68d1331b1a5adbfef8f838d8f595826452dbdf) --- 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.