AD 2012-20-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracks at the adjacent mating skins (forward and aft), which could initiate just above stringers S-4R and S-4L, and could grow and result in a decompression event.
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Required Actions
Repetitive inspections for cracks and a chemical spot test in the area of station (STA) 908, and related investigative and corrective actions, if necessary. For certain airplanes, an inspection and modification are required.
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Compliance Time
Within 120 days after the effective date of this AD for Group 1 airplanes. For Groups 2 and 3 airplanes, compliance times are specified in Boeing Special Attention Service Bulletin 737-53-1313.
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Affected Aircraft
The Boeing Company Model 737-100, -200, and -200C series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 737-53-1313, dated November 3, 2011.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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