FAA-2026-07937
Diretivas de Aeronavegabilidade; Diversos Helicópteros
Resumo Rápido
- Número AD
- FAA-2026-07937
- Autoridade
- FAA
- Data de emissão
- 23/04/2026
- Data efetiva
- —
- Criticidade
- routine
Autoridade
Federal Aviation Administration (EUA)
Data de Publicação
23 de abril de 2026
Data Efetiva
Não informada
Prazo de Cumprimento
Antes do próximo voo
Resumo da Diretiva
A FAA propõe revogar a Diretriz de Aeronavegabilidade (DA) 2020-02-17, que se aplica a certos helicópteros Modelo S-70, S-70A, S-70C, S-70C(M) e S-70C(M1) da Sikorsky Aircraft Corporation (Sikorsky). A DA 2020-02-17 exige inspeções visuais e por percussão recorrentes da pá do rotor de cauda (PRC) e, dependendo dos resultados, substituição da PRC. Desde que a FAA emitiu a DA 2020-02-17, foi determinado que modelos adicionais de helicópteros são afetados pela condição insegura. O fabricante desenvolveu uma modificação de comando de passo dividido e um kit de modificação de aprimoramento de segurança para a PRC. Esta DA proposta continuaria exigindo as ações da DA 2020-02-17, expandiria a aplicabilidade e exigiria modificação e reidentificação da PRC. Esta DA proposta também exigiria a revisão da seção de limitações de aeronavegabilidade (SLA) do manual de manutenção de helicóptero existente ou instruções para aeronavegabilidade continuada e do programa de manutenção ou inspeção aprovado existente, conforme aplicável, para incorporar inspeções recorrentes do indicador de descolamento da PRC. A FAA está propondo esta DA para resolver a condição insegura nestes produtos.
The FAA proposes to supersede Airworthiness Directive (AD) 2020-02-17, which applies to certain Sikorsky Aircraft Corporation (Sikorsky) Model S-70, S-70A, S-70C, S-70C(M), and S-70C(M1) helicopters. AD 2020-02-17 requires recurring visual and tap inspections of the tail rotor blade (TRB) and, depending on the results, replacing the TRB. Since the FAA issued AD 2020-02-17, it was determined additional helicopter models are affected by the unsafe condition. The manufacturer has developed a split pitch horn modification and a safety enhancement modification kit for the TRB. This proposed AD would continue to require the actions of AD 2020-02- 17, would expand the applicability, and would require modifying and re- identifying the TRB. This proposed AD would also require revising the airworthiness limitations section (ALS) of the existing helicopter maintenance manual or instructions for continued airworthiness and the existing approved maintenance or inspection program, as applicable, to incorporate recurring inspections of the TRB disbond indicator. The FAA is proposing 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-2026-3863; Project Identifier AD-2024-00567-R] • RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD) 2020-02-17, which applies to certain Sikorsky Aircraft Corporation (Sikorsky) Model S-70, S-70A, S-70C, S-70C(M), and S-70C(M1) helicopters. AD 2020-02-17 requires recurring visual and tap inspections of the tail rotor blade (TRB) and, depending on the results, replacing the TRB. Since the FAA issued AD 2020-02-17, it was determined additional helicopter models are affected by the unsafe condition. The manufacturer has developed a split pitch horn modification and a safety enhancement modification kit for the TRB. This proposed AD would continue to require the actions of AD 2020-02-17, would expand the applicability, and would require modifying and re-identifying the TRB. This proposed AD would also require revising the airworthiness limitations section (ALS) of the existing helicopter maintenance manual or instructions for continued airworthiness and the existing approved maintenance or inspection program, as applicable, to incorporate recurring inspections of the TRB disbond indicator. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by June 8, 2026. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493-2251. • Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA-2026-3863; 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 NPRM, any comments received, and other information. The street address for Docket Operations is listed above. Material Incorporated by Reference: • For Sikorsky material identified in this proposed AD, contact your local Sikorsky Field Representative or Sikorsky's Service Engineering Group at Sikorsky Aircraft Corporation, 124 ( printed page 21739) Quarry Road, Trumbull, CT 06611; phone: (800) Winged-S or (203) 416-4299; email: wcs_cust_service_eng.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at 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 i…
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.