AD 2001-01-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330-301 | Airworthiness Directives; Airbus Model A330-301, -321, and -322 Series Airplanes; and Model A340-211, -212, -213, -311, -312, and -313 Series Airplanes |
Unsafe Condition
Premature wear of the dynamic seals between the yaw damper actuator piston and the piston bearing can lead to hydraulic leakage from the actuator installed on active position, potentially resulting in complete loss of the green hydraulic circuit and reduced controllability of the airplane.
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Required Actions
Inspect and replace the yaw damper actuator installed on active position with a new or overhauled actuator. For affected Model A330 series airplanes, install upgraded flight control primary computers (FCPCs), which terminates the requirement for repetitive actuator replacements.
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Compliance Time
Within the applicable compliance times specified in the referenced service bulletins.
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Affected Aircraft
Airbus Model A330-301, -321, and -322 series airplanes; and Model A340-211, -212, -213, -311, -312, and -313 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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