AD 2011-09-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model 777-200 and -300 | Airworthiness Directives; The Boeing Company Model 777-200 and -300 Series Airplanes Equipped With Pratt and Whitney Engines |
Unsafe Condition
Hydraulic fluid contamination of the interior of the strut disconnect assembly can cause cracking of titanium parts in the system disconnect assembly, resulting in compromise of the engine firewall.
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Required Actions
Perform a general visual inspection for hydraulic fluid contamination of the interior of the strut disconnect assembly. If contamination is found, conduct a detailed inspection for discrepancies. If discrepancies like hydraulic fluid coking or heat discoloration are found, perform a detailed inspection of the exterior of the strut disconnect assembly for cracks. Take corrective action as necessary.
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Compliance Time
Within 12 months after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model 777-200 and -300 series airplanes equipped with Pratt and Whitney engines, as identified in Boeing Service Bulletin 777-54A0024, Revision 1, dated November 4, 2010.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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