FAA-2026-15978
Airworthiness Directives; Various Helicopters
Resumo Rápido
- Número AD
- FAA-2026-15978
- Autoridade
- FAA
- Data de emissão
- 06/08/2026
- Data efetiva
- 10/09/2026
- Criticidade
- routine
Autoridade
Federal Aviation Administration (EUA)
Data de Publicação
06 de agosto de 2026
Data Efetiva
10 de setembro de 2026
Prazo de Cumprimento
Antes do próximo voo
Resumo da Diretiva
A FAA está revogando a Diretiva de Aeronavegabilidade (DA) 2015-20-12 para determinados helicópteros Sikorsky Aircraft Corporation Modelos S-61A, D, E, L, N, NM, R e V; Croman Corporation Modelo SH-3H; Carson Helicopters, Inc., Modelos S-61L e SH-3H; Glacier Helicopter, Inc., Modelo CH-3E; Robinson Air Crane, Inc., Modelos CH-3E, CH-3C, HH-3C e HH-3E; e Siller Helicopters Modelos CH-3E e SH-3A. A DA 2015-20-12 exigia a realização de cálculos para determinar se o eixo do rotor principal (ERP) era utilizado em operações de levantamento externo repetitivo (LER) ou operações não-LER, a realização de inspeção não destrutiva (IND) do ERP-LER em busca de trincas e, dependendo dos resultados da IND, a substituição do ERP, a marcação de qualquer ERP-LER no momento da IND, o estabelecimento de vidas úteis de aposentadoria para cada ERP-LER e a remoção de serviço de qualquer ERP com furos de pino de articulação superdimensionados. Desde que a FAA emitiu a DA 2015-20-12, uma reavaliação de projeto demonstra que o ERP em certos modelos de helicóptero requer um limite de vida útil menor. Esta DA mantém alguns dos requisitos da DA 2015-20-12 e também reduz a vida útil de aposentadoria de um determinado ERP instalado em certos helicópteros e atualiza o nome do titular do certificado de tipo para alguns dos modelos de helicóptero afetados. A FAA está emitindo esta DA para resolver a condição insegura nesses produtos.
The FAA is superseding Airworthiness Directive (AD) 2015-20-12 for certain Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V; Croman Corporation Model SH-3H; Carson Helicopters, Inc., Model S-61L and SH-3H; Glacier Helicopter, Inc., Model CH-3E; Robinson Air Crane, Inc., Model CH-3E, CH-3C, HH-3C and HH-3E; and Siller Helicopters Model CH-3E and SH-3A helicopters. AD 2015-20-12 required performing calculations to determine whether the main rotor shaft (MRS) was used in repetitive external lift (REL) operations or non-REL operations, performing a nondestructive inspection (NDI) of the REL MRS for cracks and, depending on the results of the NDI, replacing the MRS, marking any REL MRS at the time of the NDI, establishing retirement lives for each REL MRS, and removing from service any MRS with oversized dowel pin bores. Since the FAA issued AD 2015-20-12, a design re-evaluation shows that the MRS on certain helicopter models requires a lower life limit. This AD retains some of the requirements of AD 2015-20-12, and also reduces the retirement life for a certain MRS installed on certain helicopters and updates the type certificate holder name for some of the affected helicopter models. The FAA is issuing this AD to address the unsafe condition on these products.Texto Completo da Diretiva
Expandir texto completo (Federal Register)Texto completo (Federal Register)
Document Headings Document headings vary by document type but may contain the following: • the agency or agencies that issued and signed a document • the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to • the agency docket number / agency internal file number • the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration • 14 CFR Part 39 • [Docket No. FAA-2026-3488; Project Identifier AD-2024-00583-R; Amendment 39-23429; AD 2026-15-17] • RIN 2120-AA64 ( printed page 50696) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2015-20-12 for certain Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V; Croman Corporation Model SH-3H; Carson Helicopters, Inc., Model S-61L and SH-3H; Glacier Helicopter, Inc., Model CH-3E; Robinson Air Crane, Inc., Model CH-3E, CH-3C, HH-3C and HH-3E; and Siller Helicopters Model CH-3E and SH-3A helicopters. AD 2015-20-12 required performing calculations to determine whether the main rotor shaft (MRS) was used in repetitive external lift (REL) operations or non-REL operations, performing a nondestructive inspection (NDI) of the REL MRS for cracks and, depending on the results of the NDI, replacing the MRS, marking any REL MRS at the time of the NDI, establishing retirement lives for each REL MRS, and removing from service any MRS with oversized dowel pin bores. Since the FAA issued AD 2015-20-12, a design re-evaluation shows that the MRS on certain helicopter models requires a lower life limit. This AD retains some of the requirements of AD 2015-20-12, and also reduces the retirement life for a certain MRS installed on certain helicopters and updates the type certificate holder name for some of the affected helicopter models. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective September 10, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 10, 2026. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA-2026-3488; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For Sikorsky material identified in this AD, contact a Sikorsky Field Representative or Sikorsky's Service Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, Trumbull, CT 06611; phone: (800) 946-4337 (1-800-Winged-S); email:wcs_cust_service_eng.gr-sik@lmco.com; website: sikorsky360.com. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 10101 Hillwood Parkway, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222-5110. It is also available atregulations.gov under Docket No. FAA-2026-3488. FOR FURTHER INFORMATION CONTACT: Isabel Saltzman, Aviation Safety Engineer, FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: (781) 238-7649; email: ecb-cos@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issu…
Fonte: Federal Register (federalregister.gov). Texto original em inglês. Conteúdo sanitizado por segurança.
Documentos e Referências
Monitore DAs automaticamente para sua aeronave
Cadastre sua aeronave no AeroCopilot e receba alertas por e-mail e notificação quando novas diretivas de aeronavegabilidade afetarem seu tipo de aeronave.
Dados obtidos do Federal Register (federalregister.gov). As informações são fornecidas para fins de consulta — consulte sempre a fonte oficial para fins de compliance regulatório.