Summary
The FAA is adopting a new airworthiness directive (AD) for certain CFM International, S.A. (CFM) Model LEAP-1A and LEAP-1C engines. This AD was prompted by an investigation of an in-flight shut down event that revealed the aft arm of the high-pressure turbine (HPT) rotor interstage seal had failed. This AD requires removal from service and replacement of the HPT rotor interstage seal for LEAP-1A engines. Since the HPT rotor interstage seal part number is interchangeable between LEAP-1A and LEAP-1C engines, this AD also prohibits installation of these affected parts onto any LEAP-1A or LEAP-1C engine. The FAA is issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2024-2325
Document Number
2025-02204
Type
Rule
Publication Date
February 4, 2025
Effective Date
March 11, 2025
Affected Manufacturer
CFM International, S.A.
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2024-2325
Topics
Official Documents
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