AD 2000-05-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | GE90-85B | Airworthiness Directives; General Electric Company GE90-85B Series Turbofan Engines |
Unsafe Condition
Aft mount whiffletree failure, which if it occurred with other critical aft mount component failures, could possibly result in an engine mount system failure and separation of the engine from the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service aft mount whiffletrees, part number 1692M12G02, before accumulating 18,000 cycles-since-new, and replace with serviceable parts. No such whiffletrees may remain in service beyond this life limit without approved alternative compliance.
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Compliance Time
Before further flight if the aft mount whiffletree has reached 18,000 cycles-since-new.
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Affected Aircraft
General Electric Company GE90-85B series turbofan engines with aft mount whiffletrees P/N 1692M12G02 installed, primarily on Boeing 777 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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