Superseded. This AD was superseded by AD 2025-14-08. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2023-23-12
Effective 01/16/2024 · Published 12/11/2023
Airworthiness Directives; CFM International, S.A. Engines
Summary
The FAA is adopting a new airworthiness directive (AD) for all CFM International, S.A. (CFM) Model LEAP-1B21, LEAP-1B23, LEAP-1B25, LEAP-1B27, LEAP-1B28, LEAP-1B28B1, LEAP-1B28B2, LEAP-1B28B2C, LEAP- 1B28B3, LEAP-1B28BBJ1, and LEAP-1B28BBJ2 (LEAP-1B) engines. This AD was prompted by a manufacturer investigation that revealed that certain high-pressure turbine (HPT) rotor stage 1 disks (HPT stage 1 disks) and a certa…