AD 2015-11-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracked midspar fittings on the inboard and outboard nacelle struts, which could result in the loss of the structural integrity of the midspar fitting, leading to an unsafe separation of the engine and consequent wing fire.
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Required Actions
Repetitive inspections for cracking of the inboard and outboard midspar fittings of the nacelle struts and of the torque bulkhead, midspar chords, drag fitting, and front spar support, followed by applicable related investigative and corrective actions; replacing the midspar fittings; and performing other specified actions.
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Compliance Time
Within 18 months of the effective date of the AD.
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Affected Aircraft
The Boeing Company Model 707 airplanes, and Model 720 and 720B series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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