2023-07003
Airworthiness Directives; CFM International, S.A. Turbofan Engines
Resumo Rápido
- Número AD
- 2023-07003
- Autoridade
- FAA
- Data de emissão
- 05/04/2023
- Data efetiva
- 10/05/2023
- Criticidade
- routine
Autoridade
Federal Aviation Administration (EUA)
Data de Publicação
05 de abril de 2023
Data Efetiva
10 de maio de 2023
Prazo de Cumprimento
Antes do próximo voo
Resumo da Diretiva
A FAA está revogando a Diretiva de Aeronavegabilidade (DA) 2021-10-09 para certos motores turbofan CFM56-5B e CFM56-7B da CFM International, S.A. (CFM) com certos selos estacionários internos da turbina de alta pressão (TAP) instalados. A DA 2021-10-09 exigia remoção, inspeção e substituição do selo estacionário interno da TAP afetado e, dependendo dos achados, substituição do selo frontal de ar rotativo da TAP, pás do rotor da TAP e rolamento de esferas nº 3. Esta DA foi motivada por trincas encontradas no selo frontal de ar rotativo da TAP. Após a FAA emitir a DA 2021-10-09, o fabricante notificou a FAA que a documentação de serviço lista incorretamente o ano de certos reparos em favo de mel e que selos estacionários internos da TAP afetados poderiam ser potencialmente instalados em motores turbofan CFM56-5C da CFM. Esta DA exige remoção, inspeção e substituição do selo estacionário interno da TAP afetado e, dependendo dos achados, substituição do selo frontal de ar rotativo da TAP, pás do rotor da TAP e rolamento de esferas nº 3. Esta DA também revisa a aplicabilidade para adicionar motores turbofan CFM56-5C da CFM. A FAA está emitindo esta DA para tratar da condição insegura nestes produtos.
The FAA is superseding Airworthiness Directive (AD) 2021-10-09 for certain CFM International, S.A. (CFM) CFM56-5B and CFM56-7B model turbofan engines with a certain high-pressure turbine (HPT) inner stationary seal installed. AD 2021-10-09 required removal, inspection, and replacement of the affected HPT inner stationary seal and, depending on the findings, replacement of the rotating air HPT front seal, HPT rotor blades, and No. 3 ball bearing. This AD was prompted by cracks found in the rotating air HPT front seal. After the FAA issued AD 2021-10-09, the manufacturer notified the FAA that the service information incorrectly lists the year of certain honeycomb repairs and that affected HPT inner stationary seals could potentially be installed on CFM CFM56-5C model turbofan engines. This AD requires removal, inspection, and replacement of the affected HPT inner stationary seal and, depending on the findings, replacement of the rotating air HPT front seal, HPT rotor blades, and No. 3 ball bearing. This AD also revises the applicability to add CFM CFM56-5C model turbofan engines. 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-2022-1405; Project Identifier AD-2022-01070-E; Amendment 39-22374; AD 2023-05-05] • RIN 2120-AA64 ( printed page 20059) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2021-10-09 for certain CFM International, S.A. (CFM) CFM56-5B and CFM56-7B model turbofan engines with a certain high-pressure turbine (HPT) inner stationary seal installed. AD 2021-10-09 required removal, inspection, and replacement of the affected HPT inner stationary seal and, depending on the findings, replacement of the rotating air HPT front seal, HPT rotor blades, and No. 3 ball bearing. This AD was prompted by cracks found in the rotating air HPT front seal. After the FAA issued AD 2021-10-09, the manufacturer notified the FAA that the service information incorrectly lists the year of certain honeycomb repairs and that affected HPT inner stationary seals could potentially be installed on CFM CFM56-5C model turbofan engines. This AD requires removal, inspection, and replacement of the affected HPT inner stationary seal and, depending on the findings, replacement of the rotating air HPT front seal, HPT rotor blades, and No. 3 ball bearing. This AD also revises the applicability to add CFM CFM56-5C model turbofan engines. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective May 10, 2023. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of May 10, 2023. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov by searching for and locating Docket No. FAA-2022-1405; 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 CFM service information identified in this final rule, contact CFM International Inc., Aviation Operations Center, 1 Neumann Way, M/D Room 285, Cincinnati, OH 45125; phone: (877) 432-3272; email:aviation.fleetsupport@ge.com. • You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (817) 222-5110. It is also available atregulations.gov by searching for and locating Docket No. FAA-2022-1405. FOR FURTHER INFORMATION CONTACT: Kevin Clark, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7088; email: kevin.m.clark@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2021-10-09, Amendment 39-21542 (86 FR 27264, May 20, 2021) (AD…
Fonte: Federal Register (federalregister.gov). Texto original em inglês. Conteúdo sanitizado por segurança.
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