AD 2013-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Fatigue-induced severance of titanium seat track bolts, leading to missing or severed bolt heads, which could result in the inability of the seat track to carry passenger loads and cause seats to detach during an emergency landing or survivable crash.
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Required Actions
Replace titanium seat track bolts with corrosion-resistant steel (CRES) bolts. Perform repetitive inspections for cracking of the splice strap and forward seat track holes. Take investigative and corrective actions if necessary. Optional terminating action for repetitive inspections is provided.
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Compliance Time
Within 7,000 total flight cycles or within 24 months, whichever occurs first, after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model 737-600, -700, -800, -900, and -900ER series airplanes, as identified in Boeing Special Attention Service Bulletin 737-53-1296, dated January 11, 2011.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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