AD 2000-05-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | CFM | International CFM56-2 | Airworthiness Directives; CFM International CFM56-2, -2A, -2B, -3, -3B, and -3C Series Turbofan Engines |
Unsafe Condition
Reports of machining anomalies in a bolt hole led to an HPT front rotating air seal failure, which can result in cracks in the bolt holes of HPT front rotating air seals, potentially leading to an uncontained engine failure and damage to the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a one-time eddy current inspection (ECI) for cracks in the bolt holes of HPT front rotating air seals, part number 1282M72P03. Replace with serviceable parts if necessary, following the procedures and intervals specified in the applicable service bulletin.
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Compliance Time
Varies based on engine model and thrust ratings, as detailed in the AD. For example, inspections must be completed at the next engine shop visit after accumulating specific cycle counts or prior to accumulating cycles-in-service, depending on the engine model and initial cycle count since new.
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Affected Aircraft
CFM International CFM56-2, -2A, -2B, -3, -3B, and -3C series turbofan engines, installed on but not limited to McDonnell Douglas DC-8 series, Boeing 737 series, as well as Boeing E-3, E-6, and KC-135 (Military) series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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