AD Amdt-39-11105
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Corrosion and cracks located at the four fasteners that attach to the aft end of the upper link assembly on the number 2 and number 3 engine struts could lead to failure of the upper link, subsequent damage to other strut support structure, and in-flight separation of an engine from the airplane.
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Required Actions
Conduct repetitive detailed visual inspections for corrosion and repetitive high frequency eddy current (HFEC) inspections for cracks of the upper link assembly on the number 2 and number 3 engine struts. Perform corrective actions if necessary.
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Affected Aircraft
Boeing Model 747 series airplanes with the specified upper link assembly on the number 2 and number 3 engine struts.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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