AD 2015-01-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Reports of side and top cover plates installed with missing fastener bolts, which results in an unsealed opening on the system disconnect assembly. This can cause hydraulic fluid contamination, leading to cracking of titanium parts in the system disconnect assembly, and also missing fasteners resulting in unsealed openings on the system disconnect assembly. Both conditions can compromise the engine firewall and result in fire hazards for both the engine compartment and the strut.
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Required Actions
Inspect the side and top cover plates to determine if all cover plate attach fasteners have been installed. Install any missing fasteners. Inspect for damage and repair if necessary. Retain inspections and corrective actions as specified in the previous AD 2011-09-11.
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Compliance Time
Within the compliance times specified in the previous AD 2011-09-11, unless already done.
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Affected Aircraft
The Boeing Company Model 777-200 and -300 series airplanes, certificated in any category, equipped with Pratt and Whitney engines, as identified in Boeing Service Bulletin 777-54A0024, Revision 2, dated January 23, 2014.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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