AD 2021-11-21
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | CFM | International | Airworthiness Directives; CFM International, S.A. Turbofan Engines |
Unsafe Condition
failure of the HPT case, uncontained rotor release, damage to the engine, and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
remove the affected HPT case from service and replace with a part eligible for installation. Before the HPT case exceeds the cycles since new limit in Table 1, Planning Information, Paragraph 3.A., of CFM SB LEAP-1A-72-00-0421-01A-930A-D, Issue 001, dated October 22, 2020, or during the next piece part exposure, whichever occurs first after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the compliance times specified, unless already done.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
CFM International, S.A. (CFM) 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 model turbofan engines, with a high-pressure turbine (HPT) case, part number (P/N) 2668M94G01, that contains a stage 7 port, P/N 2614M30P01, with a port casting serial number (S/N) listed in Table 1 in Planning Information, Paragraph 3.A., of CFM Service Bulletin (SB) LEAP-1A-72-00-0421-01A-930A-D, Issue 001, dated October 22, 2020.
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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