AD 2005-20-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 727 | Airworthiness Directives; Boeing Model 727 Airplanes |
Unsafe Condition
Cracks at open tooling holes in the lower lobe frames of body section 43, which could result in cracks in the skin panels and rapid decompression of the airplane.
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Required Actions
Inspect the lower lobe frames of body section 43 to find open holes between stringers 17L and 17R and record their location. Conduct repetitive high frequency eddy current (HFEC) inspections for cracks of all open holes. Take related investigative and corrective actions if necessary. Optionally, install rivets in all open tooling holes and all unused lining holes to terminate repetitive HFEC inspections.
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Compliance Time
Within 12 months of the effective date (November 9, 2005).
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Affected Aircraft
All Boeing Model 727 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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