AD 2018-09-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | CFM | International S | Airworthiness Directives; CFM International S.A. Turbofan Engines |
Unsafe Condition
A recent engine failure due to a fractured fan blade resulted in the engine inlet cowl disintegrating and debris penetrating the fuselage, causing a loss of pressurization, and prompting an emergency descent. One passenger fatality occurred as a result.
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Required Actions
Perform initial and repetitive inspections of the concave and convex sides of the fan blade dovetail to detect cracking and replace any blades found cracked.
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Compliance Time
Before further flight
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Affected Aircraft
All CFM International S.A. (CFM) Model CFM56-7B engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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