AD 2020-08-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
The skin lap joints at certain stringers are subject to widespread fatigue damage (WFD).
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Required Actions
Modify the left and right side lap joints of the fuselage skin, repetitive post-modification internal detailed and surface high frequency eddy current (HFEC) inspections for cracking, and applicable on-condition actions.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
The Boeing Company Model 747-8 and 747-8F series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 747-53A2895 RB, dated September 12, 2019.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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