AD 2021-09-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
The initial inspection threshold and repetitive inspection interval are inadequate to address the cracking in a timely manner.
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Required Actions
Inspect for cracking of the left- and right-hand side outboard chords of frame fittings and failsafe straps at a certain station around eight fasteners, and repair if any cracking is found. For certain airplanes, reduce the compliance time for the initial inspection, and for all airplanes reduce the repetitive interval.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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