AD 2012-16-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Reports of chem-mill step cracking on the aft lower lobe fuselage skins.
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Required Actions
Inspect the fuselage skin at the chem-mill steps using external detailed inspection, subsurface eddy current, magneto optic imager, or C-scan inspection. Repair any cracks found according to Boeing Special Attention Service Bulletin 737-53-1315.
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Compliance Time
Within the compliance times specified in Boeing Special Attention Service Bulletin 737-53-1315, dated July 29, 2011.
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Affected Aircraft
The Boeing Company Model 737-500 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 737-53-1315, dated July 29, 2011.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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