AD 2025-07-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Engines |
Unsafe Condition
Degradation of the MN4 integrated circuit microprocessor solder balls in the FADEC can result in the engine not following throttle commands.
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Required Actions
Upgrade the EEC FADEC software to an EEC FADEC software version eligible for installation as a terminating action. Replace the FADEC MN4 microprocessor. Revise the existing FAA-approved minimum equipment list (MEL) by incorporating the dispatch restrictions into the MEL. Install GE GE90-100 Service Bulletin 73-0122.
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Compliance Time
Before further flight
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Affected Aircraft
All General Electric Company (GE) Model GE90-110B1 and GE90-115B engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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