AD 2015-13-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracking in the outboard flange of the longeron extension fittings, which can become large and adversely affect the structural integrity of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Continue to perform repetitive inspections of the longeron extension fittings for cracking, as specified in AD 2013-14-05. Add new repetitive high frequency eddy current (HFEC) inspections of any modified, repaired, or replaced longeron extension fitting for cracking. Perform applicable related investigative and corrective actions if necessary.
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Compliance Time
Within the compliance times specified in the referenced service information, which is based on the effective date of AD 2013-14-05.
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Affected Aircraft
The Boeing Company Model 747-400 and 747-400F series airplanes, as specified in AD 2013-14-05.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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