AD 2016-04-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracking in the upper closure fittings at the nose cargo door portal's C-3 frame could start too early to be caught by the inspection program, potentially leading to sudden decompression and loss of structural integrity.
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Required Actions
Inspect the upper closure fitting, strap, and doubler at the nose cargo door portal for cracking using a detailed inspection and surface high frequency eddy current (HFEC) inspection. Perform all applicable related investigative and corrective actions as specified in Boeing Alert Service Bulletin 747-53A2880.
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Compliance Time
Within the compliance times specified in Boeing Alert Service Bulletin 747-53A2880.
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Affected Aircraft
All The Boeing Company Model 747-400F series airplanes, as identified in Boeing Alert Service Bulletin 747-53A2880, dated December 3, 2014.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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