AD Amdt-39-10420
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | CFM | International CFM56-2 | Airworthiness Directives; CFM International CFM56-2, -3, -3B, and -3C Series Turbofan Engines |
Unsafe Condition
Outer cone separation of the No. 3 bearing rear stationary air/oil seal and rubs between the outer cone and the high pressure compressor rotor (HPCR) stage 1-2 spool, which could result in potential uncontained failure of the HPCR stage 1-2 spool and damage to the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service certain No. 3 bearing rear stationary air/oil seals and replace with serviceable parts, install retention bushings, and remove from service HPCR stage 1-2 spools that have contacted the outer cone of the seal.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
CFM International CFM56-2, -3, -3B, and -3C series turbofan 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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