airworthiness · Rule · Final rule. · Published 2024-05-06 · Effective 2024-06-10 · 89 FR 37111
Document
Document number
2024-09564
Federal Register citation
89 FR 37111
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2024-05-06
Effective date
2024-06-10
FAA docket
Docket No. FAA-2024-0030
Abstract
The FAA is adopting a new airworthiness directive (AD) for CFM International, S.A. (CFM) Model LEAP-1A23, LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, LEAP-1A26E1, LEAP-1A29, LEAP-1A29CJ, LEAP-1A30, LEAP-1A32, LEAP-1A33, LEAP-1A33B2, and LEAP-1A35A engines. This AD was prompted by detection of melt-related freckles in the billet, which may reduce the life of certain high-pressure turbine (HPT) rotor interstage seals. This AD requires removing the affected HPT rotor interstage seals from service and replacing with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.