AD 99-23-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; BOEING Model 727-200 Series Airplanes |
Unsafe Condition
Fatigue cracks in certain structures adjacent to the number 1 cargo door cutout at the forward and aft doorway frames could result in rapid fuselage decompression and reduced structural integrity.
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Required Actions
Conduct detailed visual inspections and high frequency eddy current inspections of the upper and lower sills of the number 1 cargo door to detect cracks. Repairs must be performed if cracks are found. Repetitive inspections are required at specified intervals based on repair status.
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Compliance Time
Within 3,000 flight cycles after the effective date for repaired airplanes, and at intervals per inspection results.
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Affected Aircraft
All Boeing Model 727-200 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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