AD 2025-12-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | CFM | International | Airworthiness Directives; CFM International, S.A. Engines |
Unsafe Condition
The unsafe condition on these products is the potential for HPT stage 1 disks, forward outer seals, and compressor rotor stages 6-10 spools to have reduced material properties due to iron inclusion, which could lead to engine failure.
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Required Actions
Replace certain HPT stage 1 disks, forward outer seals, and compressor rotor stages 6-10 spools with parts that do not have the affected part numbers and serial numbers identified in the service information. The replacement must be done in accordance with the instructions in CFM Service Bulletin LEAP-1A-72-00-0507-01A-930A-D, Issue 002, dated April 24, 2025. Operators may take credit for required actions if accomplished prior to the effective date of this AD using CFM Service Bulletin LEAP-1A-72-00-0507-01A-930A-D, Issue 001.
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Compliance Time
Within 50 flight hours after the effective date of this AD
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Affected Aircraft
All CFM Model LEAP-1A engines with HPT stage 1 disks, forward outer seals, and compressor rotor stages 6-10 spools that have part numbers and serial numbers identified in CFM Service Bulletin LEAP-1A-72-00-0507-01A-930A-D, Issue 002, dated April 24, 2025.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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