AD 2024-07-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | CFM | International | Airworthiness Directives; CFM International, S.A. Engines |
Unsafe Condition
Wear on the No. 3 bearing spring finger housing can lead to high levels of non-synchronous vibration (NSV), which could induce high-pressure compressor (HPC) stall.
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Required Actions
Initial and repetitive calculations of the levels of NSV, inspection of the stage 2 high-pressure turbine (HPT) nozzle assembly honeycomb and HPT stator stationary seal honeycomb, and, depending on the results of the calculations and inspections, replacement of certain parts. Replacement of certain No. 3 bearing spring finger housings at a certain time.
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Compliance Time
Before further flight
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Affected Aircraft
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.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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