AD 2016-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Fatigue cracking in certain lap joints, which could result in rapid depressurization and consequent reduced structural integrity of the airplane.
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Required Actions
Conduct repetitive inspections for cracking of the lap joints, modify certain lap joints, perform post-repair inspections of the lap joints, and conduct new repetitive post-modification inspections for cracking in the lap joints, repairing if necessary.
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Compliance Time
Within the applicable times specified in Tables 7, 8, 9, and 10 of paragraph 1.E., 'Compliance,' of Boeing Alert Service Bulletin 747-53A2499, Revision 3, dated July 15, 2014.
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Affected Aircraft
The Boeing Company Model 747-200C, -200F, -400, -400D, and -400F series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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