AD 2014-09-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Fatigue cracking of the aft tension tie channels from body station (BS) 1120 to BS 1220 and from BS 880 to BS 1100, which could result in reduced structural integrity of the airplane and rapid depressurization.
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Required Actions
Inspect the aft tension tie channels for cracking from BS 1120 to BS 1220 and from BS 880 to BS 1100. Perform repetitive detailed inspections and surface high-frequency eddy current inspections. Install modifications as terminating actions for the affected tension tie locations.
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Compliance Time
Within 50 flight hours after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model 747-200B, 747-300, and 747-400 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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