AD 2013-23-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Fracture of inboard actuator attach fittings of the outboard flap due to incorrect machining with a cylindrical profile instead of a conical profile, resulting in reduced wall thickness.
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Required Actions
Inspect to determine the part number of the inboard actuator attach fittings of the outboard flap. For affected fittings, perform a detailed inspection for a cylindrical defect and replace if necessary. As an option, replace affected fittings without detailed inspection.
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Compliance Time
Before further flight
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Affected Aircraft
The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, and 747SR series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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