AD 2017-19-26
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
The upper skin panel at the chem-milled step above the lap joint is subject to widespread fatigue damage (WFD) if the modification was installed after 30,000 total flight cycles.
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Required Actions
Inspect for cracks along the chem-milled steps of the fuselage skin and detect missing or loose fasteners in the area of the preventive modification or repairs. Replace the time-limited repair with a permanent repair, if applicable. Perform applicable corrective actions to end certain repetitive inspections. Reduce post-modification inspection compliance times and add repetitive inspections for modified airplanes.
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Compliance Time
Within the specified compliance times outlined in the service information or previously approved AMOC, whichever occurs first.
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Affected Aircraft
The Boeing Company Model 737-600, -700, -700C, -800, and -900 series airplanes with fewer than 30,000 total flight cycles.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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