# STC SR12332SE - Type: Supplemental type certificate - Status: Current, Issued - Holder: Mechanical Specialties, LLC, United States - Description: Installation of Mechanical Specialties, LLC Human External Cargo (HEC) and non-HEC Hook System - Applied: January 20, 2025 - Status date: March 27, 2026 - Product: Aircraft, Rotorcraft - Certification basis: Part 21 - Data sheets: [TCDS R00007DE](https://openairdocs.org/tcds/R00007DE), [TCDS H11SW](https://openairdocs.org/tcds/H11SW), [TCDS H1SW](https://openairdocs.org/tcds/H1SW), [TCDS H4SW](https://openairdocs.org/tcds/H4SW), [TCDS H4NM](https://openairdocs.org/tcds/H4NM), [TCDS H2NM](https://openairdocs.org/tcds/H2NM), [TCDS R00002RC](https://openairdocs.org/tcds/R00002RC), [TCDS H15NM](https://openairdocs.org/tcds/H15NM), [TCDS H5SO](https://openairdocs.org/tcds/H5SO), [TCDS R00004RC](https://openairdocs.org/tcds/R00004RC), [TCDS H3NM](https://openairdocs.org/tcds/H3NM), [TCDS H5NM](https://openairdocs.org/tcds/H5NM), [TCDS H12NM](https://openairdocs.org/tcds/H12NM), [TCDS R00005SE](https://openairdocs.org/tcds/R00005SE), [TCDS H7SO](https://openairdocs.org/tcds/H7SO), [TCDS R00012AT](https://openairdocs.org/tcds/R00012AT), [TCDS H3SO](https://openairdocs.org/tcds/H3SO), [TCDS R00008AT](https://openairdocs.org/tcds/R00008AT), [TCDS H6SO](https://openairdocs.org/tcds/H6SO), [TCDS H7NE](https://openairdocs.org/tcds/H7NE) and 2 more - Certificate PDF: https://openairdocs.org/files/sha256/4a/de/4ade0524164078a107b8aad23954b5a58a67cab13c860fcdbcf9ce90e8cc8134 - Approved model list and other attachments: [SR12332SE_AML.pdf](https://openairdocs.org/files/sha256/42/8e/428eab08dfc9a7e51580b785053cd1662d198233a837374c20881235ec737c54) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID177285768120260717133007.0001 - DRS record last changed: July 17, 2026 - Page: https://openairdocs.org/stc/SR12332SE ## ADs that name it (0) None. ## Approved models (47) - AST Inc. UH-1F ([TCDS H11SW](https://openairdocs.org/tcds/H11SW)) - Arrow Falcon Exporters Inc. UH-1H ([TCDS R00007DE](https://openairdocs.org/tcds/R00007DE)) - Bell Textron Inc. 204B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Textron Inc. 205A ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Textron Inc. 205A-1 ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Textron Inc. 205B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW)) - Bell Textron Inc. 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. 412CF ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW)) - Bell Textron Inc. TH-1L ([TCDS H4NM](https://openairdocs.org/tcds/H4NM)) - Bell Textron Inc. UH-1E ([TCDS H4NM](https://openairdocs.org/tcds/H4NM)) - Bell Textron Inc. UH-1L ([TCDS H4NM](https://openairdocs.org/tcds/H4NM)) - California Department of Forestry UH-1F ([TCDS H2NM](https://openairdocs.org/tcds/H2NM)) - Global Helicopter Technology Inc. UH-1H ([TCDS R00002RC](https://openairdocs.org/tcds/R00002RC)) - Hagglund Helicopters LLC UH-1H ([TCDS H15NM](https://openairdocs.org/tcds/H15NM)) - International Helicopters Inc. UH-1B ([TCDS H5SO](https://openairdocs.org/tcds/H5SO)) - JJASPP Engineering Services LLC UH-1H ([TCDS R00004RC](https://openairdocs.org/tcds/R00004RC)) - Midwest Aerospace TC LLC HH-1K ([TCDS H5NM](https://openairdocs.org/tcds/H5NM)) - Midwest Aerospace TC LLC TH-1F ([TCDS H12NM](https://openairdocs.org/tcds/H12NM)) - Midwest Aerospace TC LLC TH-1L ([TCDS H5NM](https://openairdocs.org/tcds/H5NM)) - Midwest Aerospace TC LLC UH-1B ([TCDS H3NM](https://openairdocs.org/tcds/H3NM)) - Midwest Aerospace TC LLC UH-1E ([TCDS H5NM](https://openairdocs.org/tcds/H5NM)) - Midwest Aerospace TC LLC UH-1F ([TCDS H12NM](https://openairdocs.org/tcds/H12NM)) - Midwest Aerospace TC LLC UH-1L ([TCDS H5NM](https://openairdocs.org/tcds/H5NM)) - Midwest Aerospace TC LLC UH-1P ([TCDS H12NM](https://openairdocs.org/tcds/H12NM)) - Northwest Rotorcraft LLC UH-1H ([TCDS R00005SE](https://openairdocs.org/tcds/R00005SE)) - Overseas Aircraft Support Inc. TH-1L ([TCDS H7SO](https://openairdocs.org/tcds/H7SO)) - Overseas Aircraft Support Inc. UH-1B ([TCDS H7SO](https://openairdocs.org/tcds/H7SO)) - Overseas Aircraft Support Inc. UH-1E ([TCDS H7SO](https://openairdocs.org/tcds/H7SO)) - Overseas Aircraft Support Inc. UH-1H ([TCDS H7SO](https://openairdocs.org/tcds/H7SO)) - Overseas Aircraft Support Inc. UH-1L ([TCDS H7SO](https://openairdocs.org/tcds/H7SO)) - Red Tail Flying Services LLC UH-1B ([TCDS R00012AT](https://openairdocs.org/tcds/R00012AT)) - Richards Heavylift Helo Inc. UH-1A ([TCDS H3SO](https://openairdocs.org/tcds/H3SO)) - Richards Heavylift Helo Inc. UH-1B ([TCDS H3SO](https://openairdocs.org/tcds/H3SO)) - Richards Heavylift Helo Inc. UH-1H ([TCDS H3SO](https://openairdocs.org/tcds/H3SO)) - Robinson Air Crane Inc. TH-1F ([TCDS R00008AT](https://openairdocs.org/tcds/R00008AT)) - Robinson Air Crane Inc. UH-1F ([TCDS R00008AT](https://openairdocs.org/tcds/R00008AT)) - Robinson Air Crane Inc. UH-1P ([TCDS R00008AT](https://openairdocs.org/tcds/R00008AT)) - Southwest Florida Aviation International SW204 (UH-1B) ([TCDS H6SO](https://openairdocs.org/tcds/H6SO)) - Southwest Florida Aviation International SW204HP (UH-1B) ([TCDS H6SO](https://openairdocs.org/tcds/H6SO)) - Southwest Florida Aviation International SW205 (UH-1H) ([TCDS H6SO](https://openairdocs.org/tcds/H6SO)) - Southwest Florida Aviation International SW205A-1 ([TCDS H6SO](https://openairdocs.org/tcds/H6SO)) - Tamarack Helicopters Inc. TH-1F ([TCDS H7NE](https://openairdocs.org/tcds/H7NE)) - Tamarack Helicopters Inc. UH-1F ([TCDS H7NE](https://openairdocs.org/tcds/H7NE)) - Tamarack Helicopters Inc. UH-1H ([TCDS R00010SE](https://openairdocs.org/tcds/R00010SE)) - WSH LLC UH-1B ([TCDS H1RM](https://openairdocs.org/tcds/H1RM)) ## 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. SR12332SE Mechanical Specialties, LLC 1000 85th Ave SE Olympia, WA 98501 Part 29 Title 14 CFR See attached AML See attached AML See attached AML Approval of this change in type design applies only to the rotorcraft listed above. The installation should not be incorporated on any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration of the aircraft will not introduce any adverse effect the airworthiness of the aircraft. (Continued on page 3.) 01/20/2025 03/27/2026 for Manager, West Certification Branch 3 Installation of Mechanical Specialties, LLC Human External Cargo (HEC) and non-HEC Hook System in accordance with the Master Drawing List (MDL), Report No. 650-430-107, Revision 4, dated January 23, 2026, or a later approved revision. (Continued on Page 3) SR12332SE 03/27/2026 3 SR12332SE 03/27/2026 Description of Design Change (Continued from Page 1): 1. Maintained in accordance with the Instructions for Continued Airworthiness (ICA), document number 650-430-105, Revision 1, dated October 2, 2025 or later accepted revision. 2. Operated in accordance with Rotorcraft Flight Manual Supplement (RFMS), document number 407-430-110, Revision IR, dated March 24, 2026, or a later approved revision. Limitations and Conditions (Continued from Page 1): 1. A copy of this certificate, the ICA, and the RFMS, must be maintained as part of the permanent records for the modified aircraft. 2. Operational approval for external load operations must be granted by the local Aviation Authority. 3. If the holder permits another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. -------------------------------------------------End-------------------------------------------------------------- 3 3 Add Page ### SR12332SE_AML.pdf FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR12332SE FOR Installation of a Mechanical Specialties 650-430-100-100 Cargo Hook System ISSUE DATE: March 27, 2026 Page 1 of 3 **ITEM AIRCRAFT /** **ROTORCRAFT MAKE** **AIRCRAFT /** **ROTORCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICA-** **TION BASIS FOR** **ALTERATION** **FAA APPROVED** **AIRCRAFT /** **ROTORCRAFT FLIGHT** **MANUAL SUPPLEMENT** **FAA APPROVED** MASTER DRAWING LIST AML AMEN D DATE Number Revision* Drawing Revision* 1. Arrow Falcon Exporters Inc. UH-1H R00007DE Part 21 650-430- 110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 2. AST, Inc. UH-1F H11SW Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 3. Bell Textron Inc. 204B, 205A, 205A-1, 205B H1SW CAR 7 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 4. Bell Textron Inc. 212, 412, 412EP, 412CF H4SW Part 29 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 5. Bell Textron Inc. UH-1L, TH-1L, UH-1E H4NM Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 6. California Department of Forestry UH-1F H2NM Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 7. Global Helicopter Technology, Inc. UH-1H R00002RC Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 8. Hagglund Helicopters, LLC UH-1H H15NM Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 9. International Helicopters, Inc. UH-1B H5SO Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 10. JJASPP Engineering Services UH-1H R00004RC Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 11. Midwest Aerospace TC LLC UH-1B H3NM Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 12. Midwest Aerospace TC LLC UH-1E, UH-1L, TH-1L, HH-1K H5NM Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR12332SE FOR Installation of a Mechanical Specialties 650-430-100-100 Cargo Hook System ISSUE DATE: March 27, 2026 Page 2 of 3 **ITEM AIRCRAFT /** **ROTORCRAFT MAKE** **AIRCRAFT /** **ROTORCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICA-** **TION BASIS FOR** **ALTERATION** **FAA APPROVED** **AIRCRAFT /** **ROTORCRAFT FLIGHT** **MANUAL SUPPLEMENT** **FAA APPROVED** MASTER DRAWING LIST AML AMEN D DATE Number Revision* Drawing Revision* 13. Midwest Aerospace TC LLC UH-1F, UH-1P, TH-1F H12NM Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 14. Midwest Aerospace TC LLC UH-1B, UH-1H H13WE Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 15. Northwest Rotorcraft, LLC UH-1H R00005SE Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 16. Overseas Aircraft Support, Inc. UH-1B, UH-1E, UH-1H, UH-1L, TH-1L H7SO Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 17. Red Tail Flying Services LLC UH-1B R00012AT Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 18. Richards Heavylift Helo, Inc. UH-1A, UH-1B, UH-1H H3SO Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 19. Robinson Air Crane, Inc. UH-1F, TH-1F, UH-1P R00008AT Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 20. Southwest Florida Aviation International, Inc. SW204 (UH-1B) SW204HP (UH- 1B) SW205 (UH-1H) SW205A-1 H6SO Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 21. Tamarack Helicopters, Inc. UH-1F, TH-1F H7NE Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 22. Tamarack Helicopters, Inc. UH-1H R00010SE Part 21 650-430-110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 23. WSH, LLC UH-1B H1RM Part 21 650-430- 110 Revision IR, 3/24/26 650-430- 107 Revision 4, 1/23/26 * Or later FAA Approved Revision FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR12332SE FOR Installation of a Mechanical Specialties 650-430-100-100 Cargo Hook System ISSUE DATE: March 27, 2026 Page 3 of 3 FAA Approved: for Manager, West Certification Branch REISSUED: ## Every issue (1) - March 27, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/4a/de/4ade0524164078a107b8aad23954b5a58a67cab13c860fcdbcf9ce90e8cc8134), [SR12332SE_AML.pdf](https://openairdocs.org/files/sha256/42/8e/428eab08dfc9a7e51580b785053cd1662d198233a837374c20881235ec737c54) --- 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.